#!/usr/bin/env python # -*- coding:utf-8 -*- # _author_soloLi name1="solo" name2=name1 print(name1,name2) name1 = "hehe" print(name1,name2)
1、变量名只能是 字母、数字或下划线的任意组合 2、变量名的第一个字符不能是数字 3、以下关键字不能声明为变量名['and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'exec', 'finally', 'for', 'from', 'global','if', 'import', 'in', 'is', 'lambda', 'not', 'or', 'pass', 'print', 'raise', 'return', 'try', 'while', 'with', 'yield']
#!/usr/bin/env python
# -*- coding:utf-8 -*-
#-Author-solo
msg = "里约奥运"
print(msg.encode("utf-8")) #如果不指定编码格式，默认为utf-8
#b'\xe9\x87\x8c\xe7\xba\xa6\xe5\xa5\xa5\xe8\xbf\x90'
print(b'\xe9\x87\x8c\xe7\xba\xa6\xe5\xa5\xa5\xe8\xbf\x90'.decode("utf-8"))
#里约奥运
name = "编程素材网" #此时name为Unicode编码
name1 = name.encode("utf-8") #Unicode转为UTF-8
name2 = name1.decode("utf-8") #UTF-8转为Unicode
name3 = name.encode("gbk") #Unicode转为GBK
name4 = name3.decode("gbk") #GBK转为Unicode
① 声明字符编码（utf-8）
# -*- coding:utf-8 -*-
name = "李伟" #ascii码里是没有字符“你好”的，此时的name为uft-8
name1 = name.decode("utf-8") #UTF-8转为Unicode
name2 = name1.encode("gbk") #Unicode转为gbk
② 使用默认字符编码（ascii）
name = "nihao" #英文字符，且第二行字符声明去掉，此刻name为ascii码
name1 = name.decode("ascii") #ascii码转为unicode
name2 = name1.encode("utf-8") #unicode转为utf-8
name3 =name1.encode("gbk") #unicode转为gbk
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# _author_soloLi
# python2.X与python3.X区别: python2.X raw_input = python3.X input
# 提示用户输入姓名、年龄、工作、工资并以信息列表的形式打印出
name = input("Please input your name:")
age = int(input("Please input your age:")) #str强制转换为int
job = input("Please input your job:")
salary = input("Please input your salary:")
info1 = '''
------------ Info of %s ---------
Name:%s
Age:%d
Job：%s
Salary：%s
''' %(name,name,age,job,salary) #%s检测数据类型为字符串，%d检测数据类型为整数,%f检测数据类型为浮点数 强制
print(info1)
# info2 = '''
# ------------ Info of {_Name} ---------
# Name:{_Name}
# Age:{_Age}
# Job：{_Job}
# Salary：{_Salary}
# ''' .format(_Name=name,
# _Age=age,
# _Job=job,
# _Salary=salary)
# print(info2)
# info3 = '''
# ------------ Info of {0} ---------
# Name:{0}
# Age:{1}
# Job：{2}
# Salary：{3}
# ''' .format(name,age,job,salary)
# print(info3)
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# _author_soloLi
################## if语句 ######################
# A = 66
#
# B = int(input("请输入0-100的幸运数字:"))
#
# if B == A: #母级顶格写
# print ("恭喜你猜对了!") #子级强制缩进写
# elif B > A :
# print ("猜小了")
# else:
# print ("猜大了")
################## while语句 ######################
# A = 66
# count = 0 # 设置初始值count=0
#
# while count < 3 :
#
# B = int(input("请输入0-100的数字:"))
#
# if B == A:
# print ("恭喜你猜对了!")
# break
# elif B > A :
# print ("猜大了")
# else:
# print ("猜小了")
# count += 1
# else:
# print ("你猜的次数太多了!")
################## for语句 ######################
A = 66
i=1
for i in range(3):# while判断count是否小于3，如果小于3则：
print("i=",i)
B = int(input("请输入0-100的数字:"))
if B == A:
print ("恭喜你猜对了!")
break
elif B > A :
print ("猜小了")
else:
print ("猜大了")
i+=1
else:
print ("你猜的次数太多了!")
################## 三元运算 ######################
# esult = 值1 if 条件 else 值2
# 如果条件成立，那么将 “值1” 赋值给result变量，否则，将“值2”赋值给result变量
abs(x) #返回绝对值 x+y,x-y,x*y,x/y #加减乘除 x/y #取商，浮点数相除保留余数 x//y #取商，浮点数相除余数为0 x%y #取余 x**y #幂次方 cmp(x,y) #两个数比较，返回True或False相等则为0 coerce(x,y) #强制把两个数生成一个元组 divmod(x,y) #相除得到商和余数组成的元组 float(x) #转换为浮点型 str(x) #转换为字符串 hex(x) #转换为16进制 oct(x) #转换8进制
class int(object):
"""
int(x=0) -> int or long
int(x, base=10) -> int or long
Convert a number or string to an integer, or return 0 if no arguments
are given. If x is floating point, the conversion truncates towards zero.
If x is outside the integer range, the function returns a long instead.
If x is not a number or if base is given, then x must be a string or
Unicode object representing an integer literal in the given base. The
literal can be preceded by '+' or '-' and be surrounded by whitespace.
The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to
interpret the base from the string as an integer literal.
>>> int('0b100', base=0)
"""
def bit_length(self):
""" 返回表示该数字的时占用的最少位数 """
"""
int.bit_length() -> int
Number of bits necessary to represent self in binary.
>>> bin(37)
'0b100101'
>>> (37).bit_length()
"""
return 0
def conjugate(self, *args, **kwargs): # real signature unknown
""" 返回该复数的共轭复数 """
""" Returns self, the complex conjugate of any int. """
pass
def __abs__(self):
""" 返回绝对值 """
""" x.__abs__() <==> abs(x) """
pass
def __add__(self, y):
""" x.__add__(y) <==> x+y """
pass
def __and__(self, y):
""" x.__and__(y) <==> x&y """
pass
def __cmp__(self, y):
""" 比较两个数大小 """
""" x.__cmp__(y) <==> cmp(x,y) """
pass
def __coerce__(self, y):
""" 强制生成一个元组 """
""" x.__coerce__(y) <==> coerce(x, y) """
pass
def __divmod__(self, y):
""" 相除，得到商和余数组成的元组 """
""" x.__divmod__(y) <==> divmod(x, y) """
pass
def __div__(self, y):
""" x.__div__(y) <==> x/y """
pass
def __float__(self):
""" 转换为浮点类型 """
""" x.__float__() <==> float(x) """
pass
def __floordiv__(self, y):
""" x.__floordiv__(y) <==> x//y """
pass
def __format__(self, *args, **kwargs): # real signature unknown
pass
def __getattribute__(self, name):
""" x.__getattribute__('name') <==> x.name """
pass
def __getnewargs__(self, *args, **kwargs): # real signature unknown
""" 内部调用 __new__方法或创建对象时传入参数使用 """
pass
def __hash__(self):
"""如果对象object为哈希表类型，返回对象object的哈希值。哈希值为整数。在字典查找中，哈希值用于快速比较字典的键。两个数值如果相等，则哈希值也相等。"""
""" x.__hash__() <==> hash(x) """
pass
def __hex__(self):
""" 返回当前数的 十六进制 表示 """
""" x.__hex__() <==> hex(x) """
pass
def __index__(self):
""" 用于切片，数字无意义 """
""" x[y:z] <==> x[y.__index__():z.__index__()] """
pass
def __init__(self, x, base=10): # known special case of int.__init__
""" 构造方法，执行 x = 123 或 x = int(10) 时，自动调用，暂时忽略 """
"""
int(x=0) -> int or long
int(x, base=10) -> int or long
Convert a number or string to an integer, or return 0 if no arguments
are given. If x is floating point, the conversion truncates towards zero.
If x is outside the integer range, the function returns a long instead.
If x is not a number or if base is given, then x must be a string or
Unicode object representing an integer literal in the given base. The
literal can be preceded by '+' or '-' and be surrounded by whitespace.
The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to
interpret the base from the string as an integer literal.
>>> int('0b100', base=0)
# (copied from class doc)
"""
pass
def __int__(self):
""" 转换为整数 """
""" x.__int__() <==> int(x) """
pass
def __invert__(self):
""" x.__invert__() <==> ~x """
pass
def __long__(self):
""" 转换为长整数 """
""" x.__long__() <==> long(x) """
pass
def __lshift__(self, y):
""" x.__lshift__(y) <==> x<<y """
pass
def __mod__(self, y):
""" x.__mod__(y) <==> x%y """
pass
def __mul__(self, y):
""" x.__mul__(y) <==> x*y """
pass
def __neg__(self):
""" x.__neg__() <==> -x """
pass
@staticmethod # known case of __new__
def __new__(S, *more):
""" T.__new__(S, ...) -> a new object with type S, a subtype of T """
pass
def __nonzero__(self):
""" x.__nonzero__() <==> x != 0 """
pass
def __oct__(self):
""" 返回改值的 八进制 表示 """
""" x.__oct__() <==> oct(x) """
pass
def __or__(self, y):
""" x.__or__(y) <==> x|y """
pass
def __pos__(self):
""" x.__pos__() <==> +x """
pass
def __pow__(self, y, z=None):
""" 幂，次方 """
""" x.__pow__(y[, z]) <==> pow(x, y[, z]) """
pass
def __radd__(self, y):
""" x.__radd__(y) <==> y+x """
pass
def __rand__(self, y):
""" x.__rand__(y) <==> y&x """
pass
def __rdivmod__(self, y):
""" x.__rdivmod__(y) <==> divmod(y, x) """
pass
def __rdiv__(self, y):
""" x.__rdiv__(y) <==> y/x """
pass
def __repr__(self):
"""转化为解释器可读取的形式 """
""" x.__repr__() <==> repr(x) """
pass
def __str__(self):
"""转换为人阅读的形式，如果没有适于人阅读的解释形式的话，则返回解释器课阅读的形式"""
""" x.__str__() <==> str(x) """
pass
def __rfloordiv__(self, y):
""" x.__rfloordiv__(y) <==> y//x """
pass
def __rlshift__(self, y):
""" x.__rlshift__(y) <==> y<<x """
pass
def __rmod__(self, y):
""" x.__rmod__(y) <==> y%x """
pass
def __rmul__(self, y):
""" x.__rmul__(y) <==> y*x """
pass
def __ror__(self, y):
""" x.__ror__(y) <==> y|x """
pass
def __rpow__(self, x, z=None):
""" y.__rpow__(x[, z]) <==> pow(x, y[, z]) """
pass
def __rrshift__(self, y):
""" x.__rrshift__(y) <==> y>>x """
pass
def __rshift__(self, y):
""" x.__rshift__(y) <==> x>>y """
pass
def __rsub__(self, y):
""" x.__rsub__(y) <==> y-x """
pass
def __rtruediv__(self, y):
""" x.__rtruediv__(y) <==> y/x """
pass
def __rxor__(self, y):
""" x.__rxor__(y) <==> y^x """
pass
def __sub__(self, y):
""" x.__sub__(y) <==> x-y """
pass
def __truediv__(self, y):
""" x.__truediv__(y) <==> x/y """
pass
def __trunc__(self, *args, **kwargs):
""" 返回数值被截取为整形的值，在整形中无意义 """
pass
def __xor__(self, y):
""" x.__xor__(y) <==> x^y """
pass
denominator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
""" 分母 = 1 """
"""the denominator of a rational number in lowest terms"""
imag = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
""" 虚数，无意义 """
"""the imaginary part of a complex number"""
numerator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
""" 分子 = 数字大小 """
"""the numerator of a rational number in lowest terms"""
real = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
""" 实属，无意义 """
"""the real part of a complex number"""
int
int
class long(object):
"""
long(x=0) -> long
long(x, base=10) -> long
Convert a number or string to a long integer, or return 0L if no arguments
are given. If x is floating point, the conversion truncates towards zero.
If x is not a number or if base is given, then x must be a string or
Unicode object representing an integer literal in the given base. The
literal can be preceded by '+' or '-' and be surrounded by whitespace.
The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to
interpret the base from the string as an integer literal.
>>> int('0b100', base=0)
4L
"""
def bit_length(self): # real signature unknown; restored from __doc__
"""
long.bit_length() -> int or long
Number of bits necessary to represent self in binary.
>>> bin(37L)
'0b100101'
>>> (37L).bit_length()
"""
return 0
def conjugate(self, *args, **kwargs): # real signature unknown
""" Returns self, the complex conjugate of any long. """
pass
def __abs__(self): # real signature unknown; restored from __doc__
""" x.__abs__() <==> abs(x) """
pass
def __add__(self, y): # real signature unknown; restored from __doc__
""" x.__add__(y) <==> x+y """
pass
def __and__(self, y): # real signature unknown; restored from __doc__
""" x.__and__(y) <==> x&y """
pass
def __cmp__(self, y): # real signature unknown; restored from __doc__
""" x.__cmp__(y) <==> cmp(x,y) """
pass
def __coerce__(self, y): # real signature unknown; restored from __doc__
""" x.__coerce__(y) <==> coerce(x, y) """
pass
def __divmod__(self, y): # real signature unknown; restored from __doc__
""" x.__divmod__(y) <==> divmod(x, y) """
pass
def __div__(self, y): # real signature unknown; restored from __doc__
""" x.__div__(y) <==> x/y """
pass
def __float__(self): # real signature unknown; restored from __doc__
""" x.__float__() <==> float(x) """
pass
def __floordiv__(self, y): # real signature unknown; restored from __doc__
""" x.__floordiv__(y) <==> x//y """
pass
def __format__(self, *args, **kwargs): # real signature unknown
pass
def __getattribute__(self, name): # real signature unknown; restored from __doc__
""" x.__getattribute__('name') <==> x.name """
pass
def __getnewargs__(self, *args, **kwargs): # real signature unknown
pass
def __hash__(self): # real signature unknown; restored from __doc__
""" x.__hash__() <==> hash(x) """
pass
def __hex__(self): # real signature unknown; restored from __doc__
""" x.__hex__() <==> hex(x) """
pass
def __index__(self): # real signature unknown; restored from __doc__
""" x[y:z] <==> x[y.__index__():z.__index__()] """
pass
def __init__(self, x=0): # real signature unknown; restored from __doc__
pass
def __int__(self): # real signature unknown; restored from __doc__
""" x.__int__() <==> int(x) """
pass
def __invert__(self): # real signature unknown; restored from __doc__
""" x.__invert__() <==> ~x """
pass
def __long__(self): # real signature unknown; restored from __doc__
""" x.__long__() <==> long(x) """
pass
def __lshift__(self, y): # real signature unknown; restored from __doc__
""" x.__lshift__(y) <==> x<<y """
pass
def __mod__(self, y): # real signature unknown; restored from __doc__
""" x.__mod__(y) <==> x%y """
pass
def __mul__(self, y): # real signature unknown; restored from __doc__
""" x.__mul__(y) <==> x*y """
pass
def __neg__(self): # real signature unknown; restored from __doc__
""" x.__neg__() <==> -x """
pass
@staticmethod # known case of __new__
def __new__(S, *more): # real signature unknown; restored from __doc__
""" T.__new__(S, ...) -> a new object with type S, a subtype of T """
pass
def __nonzero__(self): # real signature unknown; restored from __doc__
""" x.__nonzero__() <==> x != 0 """
pass
def __oct__(self): # real signature unknown; restored from __doc__
""" x.__oct__() <==> oct(x) """
pass
def __or__(self, y): # real signature unknown; restored from __doc__
""" x.__or__(y) <==> x|y """
pass
def __pos__(self): # real signature unknown; restored from __doc__
""" x.__pos__() <==> +x """
pass
def __pow__(self, y, z=None): # real signature unknown; restored from __doc__
""" x.__pow__(y[, z]) <==> pow(x, y[, z]) """
pass
def __radd__(self, y): # real signature unknown; restored from __doc__
""" x.__radd__(y) <==> y+x """
pass
def __rand__(self, y): # real signature unknown; restored from __doc__
""" x.__rand__(y) <==> y&x """
pass
def __rdivmod__(self, y): # real signature unknown; restored from __doc__
""" x.__rdivmod__(y) <==> divmod(y, x) """
pass
def __rdiv__(self, y): # real signature unknown; restored from __doc__
""" x.__rdiv__(y) <==> y/x """
pass
def __repr__(self): # real signature unknown; restored from __doc__
""" x.__repr__() <==> repr(x) """
pass
def __rfloordiv__(self, y): # real signature unknown; restored from __doc__
""" x.__rfloordiv__(y) <==> y//x """
pass
def __rlshift__(self, y): # real signature unknown; restored from __doc__
""" x.__rlshift__(y) <==> y<<x """
pass
def __rmod__(self, y): # real signature unknown; restored from __doc__
""" x.__rmod__(y) <==> y%x """
pass
def __rmul__(self, y): # real signature unknown; restored from __doc__
""" x.__rmul__(y) <==> y*x """
pass
def __ror__(self, y): # real signature unknown; restored from __doc__
""" x.__ror__(y) <==> y|x """
pass
def __rpow__(self, x, z=None): # real signature unknown; restored from __doc__
""" y.__rpow__(x[, z]) <==> pow(x, y[, z]) """
pass
def __rrshift__(self, y): # real signature unknown; restored from __doc__
""" x.__rrshift__(y) <==> y>>x """
pass
def __rshift__(self, y): # real signature unknown; restored from __doc__
""" x.__rshift__(y) <==> x>>y """
pass
def __rsub__(self, y): # real signature unknown; restored from __doc__
""" x.__rsub__(y) <==> y-x """
pass
def __rtruediv__(self, y): # real signature unknown; restored from __doc__
""" x.__rtruediv__(y) <==> y/x """
pass
def __rxor__(self, y): # real signature unknown; restored from __doc__
""" x.__rxor__(y) <==> y^x """
pass
def __sizeof__(self, *args, **kwargs): # real signature unknown
""" Returns size in memory, in bytes """
pass
def __str__(self): # real signature unknown; restored from __doc__
""" x.__str__() <==> str(x) """
pass
def __sub__(self, y): # real signature unknown; restored from __doc__
""" x.__sub__(y) <==> x-y """
pass
def __truediv__(self, y): # real signature unknown; restored from __doc__
""" x.__truediv__(y) <==> x/y """
pass
def __trunc__(self, *args, **kwargs): # real signature unknown
""" Truncating an Integral returns itself. """
pass
def __xor__(self, y): # real signature unknown; restored from __doc__
""" x.__xor__(y) <==> x^y """
pass
denominator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the denominator of a rational number in lowest terms"""
imag = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the imaginary part of a complex number"""
numerator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the numerator of a rational number in lowest terms"""
real = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the real part of a complex number"""
long
long
class float(object):
"""
float(x) -> floating point number
Convert a string or number to a floating point number, if possible.
"""
def as_integer_ratio(self):
""" 获取改值的最简比 """
"""
float.as_integer_ratio() -> (int, int)
Return a pair of integers, whose ratio is exactly equal to the original
float and with a positive denominator.
Raise OverflowError on infinities and a ValueError on NaNs.
>>> (10.0).as_integer_ratio()
(10, 1)
>>> (0.0).as_integer_ratio()
(0, 1)
>>> (-.25).as_integer_ratio()
(-1, 4)
"""
pass
def conjugate(self, *args, **kwargs): # real signature unknown
""" Return self, the complex conjugate of any float. """
pass
def fromhex(self, string):
""" 将十六进制字符串转换成浮点型 """
"""
float.fromhex(string) -> float
Create a floating-point number from a hexadecimal string.
>>> float.fromhex('0x1.ffffp10')
2047.984375
>>> float.fromhex('-0x1p-1074')
-4.9406564584124654e-324
"""
return 0.0
def hex(self):
""" 返回当前值的 16 进制表示 """
"""
float.hex() -> string
Return a hexadecimal representation of a floating-point number.
>>> (-0.1).hex()
'-0x1.999999999999ap-4'
>>> 3.14159.hex()
'0x1.921f9f01b866ep+1'
"""
return ""
def is_integer(self, *args, **kwargs): # real signature unknown
""" Return True if the float is an integer. """
pass
def __abs__(self):
""" x.__abs__() <==> abs(x) """
pass
def __add__(self, y):
""" x.__add__(y) <==> x+y """
pass
def __coerce__(self, y):
""" x.__coerce__(y) <==> coerce(x, y) """
pass
def __divmod__(self, y):
""" x.__divmod__(y) <==> divmod(x, y) """
pass
def __div__(self, y):
""" x.__div__(y) <==> x/y """
pass
def __eq__(self, y):
""" x.__eq__(y) <==> x==y """
pass
def __float__(self):
""" x.__float__() <==> float(x) """
pass
def __floordiv__(self, y):
""" x.__floordiv__(y) <==> x//y """
pass
def __format__(self, format_spec):
"""
float.__format__(format_spec) -> string
Formats the float according to format_spec.
"""
return ""
def __getattribute__(self, name):
""" x.__getattribute__('name') <==> x.name """
pass
def __getformat__(self, typestr):
"""
float.__getformat__(typestr) -> string
You probably don't want to use this function. It exists mainly to be
used in Python's test suite.
typestr must be 'double' or 'float'. This function returns whichever of
'unknown', 'IEEE, big-endian' or 'IEEE, little-endian' best describes the
format of floating point numbers used by the C type named by typestr.
"""
return ""
def __getnewargs__(self, *args, **kwargs): # real signature unknown
pass
def __ge__(self, y):
""" x.__ge__(y) <==> x>=y """
pass
def __gt__(self, y):
""" x.__gt__(y) <==> x>y """
pass
def __hash__(self):
""" x.__hash__() <==> hash(x) """
pass
def __init__(self, x):
pass
def __int__(self):
""" x.__int__() <==> int(x) """
pass
def __le__(self, y):
""" x.__le__(y) <==> x<=y """
pass
def __long__(self):
""" x.__long__() <==> long(x) """
pass
def __lt__(self, y):
""" x.__lt__(y) <==> x<y """
pass
def __mod__(self, y):
""" x.__mod__(y) <==> x%y """
pass
def __mul__(self, y):
""" x.__mul__(y) <==> x*y """
pass
def __neg__(self):
""" x.__neg__() <==> -x """
pass
@staticmethod # known case of __new__
def __new__(S, *more):
""" T.__new__(S, ...) -> a new object with type S, a subtype of T """
pass
def __ne__(self, y):
""" x.__ne__(y) <==> x!=y """
pass
def __nonzero__(self):
""" x.__nonzero__() <==> x != 0 """
pass
def __pos__(self):
""" x.__pos__() <==> +x """
pass
def __pow__(self, y, z=None):
""" x.__pow__(y[, z]) <==> pow(x, y[, z]) """
pass
def __radd__(self, y):
""" x.__radd__(y) <==> y+x """
pass
def __rdivmod__(self, y):
""" x.__rdivmod__(y) <==> divmod(y, x) """
pass
def __rdiv__(self, y):
""" x.__rdiv__(y) <==> y/x """
pass
def __repr__(self):
""" x.__repr__() <==> repr(x) """
pass
def __rfloordiv__(self, y):
""" x.__rfloordiv__(y) <==> y//x """
pass
def __rmod__(self, y):
""" x.__rmod__(y) <==> y%x """
pass
def __rmul__(self, y):
""" x.__rmul__(y) <==> y*x """
pass
def __rpow__(self, x, z=None):
""" y.__rpow__(x[, z]) <==> pow(x, y[, z]) """
pass
def __rsub__(self, y):
""" x.__rsub__(y) <==> y-x """
pass
def __rtruediv__(self, y):
""" x.__rtruediv__(y) <==> y/x """
pass
def __setformat__(self, typestr, fmt):
"""
float.__setformat__(typestr, fmt) -> None
You probably don't want to use this function. It exists mainly to be
used in Python's test suite.
typestr must be 'double' or 'float'. fmt must be one of 'unknown',
'IEEE, big-endian' or 'IEEE, little-endian', and in addition can only be
one of the latter two if it appears to match the underlying C reality.
Override the automatic determination of C-level floating point type.
This affects how floats are converted to and from binary strings.
"""
pass
def __str__(self):
""" x.__str__() <==> str(x) """
pass
def __sub__(self, y):
""" x.__sub__(y) <==> x-y """
pass
def __truediv__(self, y):
""" x.__truediv__(y) <==> x/y """
pass
def __trunc__(self, *args, **kwargs): # real signature unknown
""" Return the Integral closest to x between 0 and x. """
pass
imag = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the imaginary part of a complex number"""
real = property(lambda self: object(), lambda self, v: None, lambda self: None) # default
"""the real part of a complex number"""
float
float
name = "my name is solo"
print(name.capitalize()) #首字母大写
#My name is solo
print(name.count("l")) #统计字符串出现某个字符的个数
#2
print(name.center(30,"-")) #打印30个字符，不够的-补齐
#--------my name is solo--------
print(name.ljust(30,"-")) #打印30个字符，不够的-补齐，字符串在左边
#my name is solo----------------
print(name.endswith("solo")) #判断字符串是否以solo结尾
#True
print(name[name.find("na"):]) #find寻找na所在的索引下标 字符串也可以切片
#name is solo
print("5.3".isdigit()) #判断字符是否为整数
#False
print("a_1A".isidentifier()) #判断是不是一个合法的标识符（变量名）
#True
print("+".join(["1","2","3"])) #把join后的内容加入到前面字符串中，以+为分割符
#1+2+3
print("\nsolo".strip()) #去换行符
#solo
print("1+2+3+4".split("+")) #以+为分隔符生成新的列表，默认不写为空格
#['1', '2', '3', '4']
name = "my name is {name} and i an {year} old"
print(name.format(name="solo",year=20)
#my name is solo and i an 20 old
print(name.format_map({"name":"solo","year":20})) #很少用
#my name is solo and i an 20 old
p = str.maketrans("abcdefli","12345678") #转换 一一对应
print("lianzhilei".translate(p))
#781nzh8758
class str(basestring):
"""
str(object='') -> string
Return a nice string representation of the object.
If the argument is a string, the return value is the same object.
"""
def capitalize(self):
""" 首字母变大写 """
"""
S.capitalize() -> string
Return a copy of the string S with only its first character
capitalized.
"""
return ""
def center(self, width, fillchar=None):
""" 内容居中，width：总长度；fillchar：空白处填充内容，默认无 """
"""
S.center(width[, fillchar]) -> string
Return S centered in a string of length width. Padding is
done using the specified fill character (default is a space)
"""
return ""
def count(self, sub, start=None, end=None):
""" 子序列个数 """
"""
S.count(sub[, start[, end]]) -> int
Return the number of non-overlapping occurrences of substring sub in
string S[start:end]. Optional arguments start and end are interpreted
as in slice notation.
"""
return 0
def decode(self, encoding=None, errors=None):
""" 解码 """
"""
S.decode([encoding[,errors]]) -> object
Decodes S using the codec registered for encoding. encoding defaults
to the default encoding. errors may be given to set a different error
handling scheme. Default is 'strict' meaning that encoding errors raise
a UnicodeDecodeError. Other possible values are 'ignore' and 'replace'
as well as any other name registered with codecs.register_error that is
able to handle UnicodeDecodeErrors.
"""
return object()
def encode(self, encoding=None, errors=None):
""" 编码，针对unicode """
"""
S.encode([encoding[,errors]]) -> object
Encodes S using the codec registered for encoding. encoding defaults
to the default encoding. errors may be given to set a different error
handling scheme. Default is 'strict' meaning that encoding errors raise
a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
'xmlcharrefreplace' as well as any other name registered with
codecs.register_error that is able to handle UnicodeEncodeErrors.
"""
return object()
def endswith(self, suffix, start=None, end=None):
""" 是否以 xxx 结束 """
"""
S.endswith(suffix[, start[, end]]) -> bool
Return True if S ends with the specified suffix, False otherwise.
With optional start, test S beginning at that position.
With optional end, stop comparing S at that position.
suffix can also be a tuple of strings to try.
"""
return False
def expandtabs(self, tabsize=None):
""" 将tab转换成空格，默认一个tab转换成8个空格 """
"""
S.expandtabs([tabsize]) -> string
Return a copy of S where all tab characters are expanded using spaces.
If tabsize is not given, a tab size of 8 characters is assumed.
"""
return ""
def find(self, sub, start=None, end=None):
""" 寻找子序列位置，如果没找到，返回 -1 """
"""
S.find(sub [,start [,end]]) -> int
Return the lowest index in S where substring sub is found,
such that sub is contained within S[start:end]. Optional
arguments start and end are interpreted as in slice notation.
Return -1 on failure.
"""
return 0
def format(*args, **kwargs): # known special case of str.format
""" 字符串格式化，动态参数，将函数式编程时细说 """
"""
S.format(*args, **kwargs) -> string
Return a formatted version of S, using substitutions from args and kwargs.
The substitutions are identified by braces ('{' and '}').
"""
pass
def index(self, sub, start=None, end=None):
""" 子序列位置，如果没找到，报错 """
S.index(sub [,start [,end]]) -> int
Like S.find() but raise ValueError when the substring is not found.
"""
return 0
def isalnum(self):
""" 是否是字母和数字 """
"""
S.isalnum() -> bool
Return True if all characters in S are alphanumeric
and there is at least one character in S, False otherwise.
"""
return False
def isalpha(self):
""" 是否是字母 """
"""
S.isalpha() -> bool
Return True if all characters in S are alphabetic
and there is at least one character in S, False otherwise.
"""
return False
def isdigit(self):
""" 是否是数字 """
"""
S.isdigit() -> bool
Return True if all characters in S are digits
and there is at least one character in S, False otherwise.
"""
return False
def islower(self):
""" 是否小写 """
"""
S.islower() -> bool
Return True if all cased characters in S are lowercase and there is
at least one cased character in S, False otherwise.
"""
return False
def isspace(self):
"""
S.isspace() -> bool
Return True if all characters in S are whitespace
and there is at least one character in S, False otherwise.
"""
return False
def istitle(self):
"""
S.istitle() -> bool
Return True if S is a titlecased string and there is at least one
character in S, i.e. uppercase characters may only follow uncased
characters and lowercase characters only cased ones. Return False
otherwise.
"""
return False
def isupper(self):
"""
S.isupper() -> bool
Return True if all cased characters in S are uppercase and there is
at least one cased character in S, False otherwise.
"""
return False
def join(self, iterable):
""" 连接 """
"""
S.join(iterable) -> string
Return a string which is the concatenation of the strings in the
iterable. The separator between elements is S.
"""
return ""
def ljust(self, width, fillchar=None):
""" 内容左对齐，右侧填充 """
"""
S.ljust(width[, fillchar]) -> string
Return S left-justified in a string of length width. Padding is
done using the specified fill character (default is a space).
"""
return ""
def lower(self):
""" 变小写 """
"""
S.lower() -> string
Return a copy of the string S converted to lowercase.
"""
return ""
def lstrip(self, chars=None):
""" 移除左侧空白 """
"""
S.lstrip([chars]) -> string or unicode
Return a copy of the string S with leading whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping
"""
return ""
def partition(self, sep):
""" 分割，前，中，后三部分 """
"""
S.partition(sep) -> (head, sep, tail)
Search for the separator sep in S, and return the part before it,
the separator itself, and the part after it. If the separator is not
found, return S and two empty strings.
"""
pass
def replace(self, old, new, count=None):
""" 替换 """
"""
S.replace(old, new[, count]) -> string
Return a copy of string S with all occurrences of substring
old replaced by new. If the optional argument count is
given, only the first count occurrences are replaced.
"""
return ""
def rfind(self, sub, start=None, end=None):
"""
S.rfind(sub [,start [,end]]) -> int
Return the highest index in S where substring sub is found,
such that sub is contained within S[start:end]. Optional
arguments start and end are interpreted as in slice notation.
Return -1 on failure.
"""
return 0
def rindex(self, sub, start=None, end=None):
"""
S.rindex(sub [,start [,end]]) -> int
Like S.rfind() but raise ValueError when the substring is not found.
"""
return 0
def rjust(self, width, fillchar=None):
"""
S.rjust(width[, fillchar]) -> string
Return S right-justified in a string of length width. Padding is
done using the specified fill character (default is a space)
"""
return ""
def rpartition(self, sep):
"""
S.rpartition(sep) -> (head, sep, tail)
Search for the separator sep in S, starting at the end of S, and return
the part before it, the separator itself, and the part after it. If the
separator is not found, return two empty strings and S.
"""
pass
def rsplit(self, sep=None, maxsplit=None):
"""
S.rsplit([sep [,maxsplit]]) -> list of strings
Return a list of the words in the string S, using sep as the
delimiter string, starting at the end of the string and working
to the front. If maxsplit is given, at most maxsplit splits are
done. If sep is not specified or is None, any whitespace string
is a separator.
"""
return []
def rstrip(self, chars=None):
"""
S.rstrip([chars]) -> string or unicode
Return a copy of the string S with trailing whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping
"""
return ""
def split(self, sep=None, maxsplit=None):
""" 分割， maxsplit最多分割几次 """
"""
S.split([sep [,maxsplit]]) -> list of strings
Return a list of the words in the string S, using sep as the
delimiter string. If maxsplit is given, at most maxsplit
splits are done. If sep is not specified or is None, any
whitespace string is a separator and empty strings are removed
from the result.
"""
return []
def splitlines(self, keepends=False):
""" 根据换行分割 """
"""
S.splitlines(keepends=False) -> list of strings
Return a list of the lines in S, breaking at line boundaries.
Line breaks are not included in the resulting list unless keepends
is given and true.
"""
return []
def startswith(self, prefix, start=None, end=None):
""" 是否起始 """
"""
S.startswith(prefix[, start[, end]]) -> bool
Return True if S starts with the specified prefix, False otherwise.
With optional start, test S beginning at that position.
With optional end, stop comparing S at that position.
prefix can also be a tuple of strings to try.
"""
return False
def strip(self, chars=None):
""" 移除两段空白 """
"""
S.strip([chars]) -> string or unicode
Return a copy of the string S with leading and trailing
whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping
"""
return ""
def swapcase(self):
""" 大写变小写，小写变大写 """
"""
S.swapcase() -> string
Return a copy of the string S with uppercase characters
converted to lowercase and vice versa.
"""
return ""
def title(self):
"""
S.title() -> string
Return a titlecased version of S, i.e. words start with uppercase
characters, all remaining cased characters have lowercase.
"""
return ""
def translate(self, table, deletechars=None):
"""
转换，需要先做一个对应表，最后一个表示删除字符集合
intab = "aeiou"
outtab = "12345"
trantab = maketrans(intab, outtab)
str = "this is string example....wow!!!"
print str.translate(trantab, 'xm')
"""
"""
S.translate(table [,deletechars]) -> string
Return a copy of the string S, where all characters occurring
in the optional argument deletechars are removed, and the
remaining characters have been mapped through the given
translation table, which must be a string of length 256 or None.
If the table argument is None, no translation is applied and
the operation simply removes the characters in deletechars.
"""
return ""
def upper(self):
"""
S.upper() -> string
Return a copy of the string S converted to uppercase.
"""
return ""
def zfill(self, width):
"""方法返回指定长度的字符串，原字符串右对齐，前面填充0。"""
"""
S.zfill(width) -> string
Pad a numeric string S with zeros on the left, to fill a field
of the specified width. The string S is never truncated.
"""
return ""
def _formatter_field_name_split(self, *args, **kwargs): # real signature unknown
pass
def _formatter_parser(self, *args, **kwargs): # real signature unknown
pass
def __add__(self, y):
""" x.__add__(y) <==> x+y """
pass
def __contains__(self, y):
""" x.__contains__(y) <==> y in x """
pass
def __eq__(self, y):
""" x.__eq__(y) <==> x==y """
pass
def __format__(self, format_spec):
"""
S.__format__(format_spec) -> string
Return a formatted version of S as described by format_spec.
"""
return ""
def __getattribute__(self, name):
""" x.__getattribute__('name') <==> x.name """
pass
def __getitem__(self, y):
""" x.__getitem__(y) <==> x[y] """
pass
def __getnewargs__(self, *args, **kwargs): # real signature unknown
pass
def __getslice__(self, i, j):
"""
x.__getslice__(i, j) <==> x[i:j]
Use of negative indices is not supported.
"""
pass
def __ge__(self, y):
""" x.__ge__(y) <==> x>=y """
pass
def __gt__(self, y):
""" x.__gt__(y) <==> x>y """
pass
def __hash__(self):
""" x.__hash__() <==> hash(x) """
pass
def __init__(self, string=''): # known special case of str.__init__
"""
str(object='') -> string
Return a nice string representation of the object.
If the argument is a string, the return value is the same object.
# (copied from class doc)
"""
pass
def __len__(self):
""" x.__len__() <==> len(x) """
pass
def __le__(self, y):
""" x.__le__(y) <==> x<=y """
pass
def __lt__(self, y):
""" x.__lt__(y) <==> x<y """
pass
def __mod__(self, y):
""" x.__mod__(y) <==> x%y """
pass
def __mul__(self, n):
""" x.__mul__(n) <==> x*n """
pass
@staticmethod # known case of __new__
def __new__(S, *more):
""" T.__new__(S, ...) -> a new object with type S, a subtype of T """
pass
def __ne__(self, y):
""" x.__ne__(y) <==> x!=y """
pass
def __repr__(self):
""" x.__repr__() <==> repr(x) """
pass
def __rmod__(self, y):
""" x.__rmod__(y) <==> y%x """
pass
def __rmul__(self, n):
""" x.__rmul__(n) <==> n*x """
pass
def __sizeof__(self):
""" S.__sizeof__() -> size of S in memory, in bytes """
pass
def __str__(self):
""" x.__str__() <==> str(x) """
pass
str
str
#两种创建方式 name_list = ['alex', 'seven', 'eric'] name_list = list(['alex', 'seven', 'eric'])
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"] print(name_list[0:3]) #取下标0至下标3之间的元素，包括0，不包括3 #['Alex', 'Tenglan', 'Eric'] print(name_list[:3]) #:前什么都不写，表示从0开始，效果跟上句一样 #['Alex', 'Tenglan', 'Eric'] print(name_list[3:]) #:后什么不写，表示取值到最后 #['Rain', 'Tom', 'Amy'] print(name_list[:]) #:前后都不写，表示取值所有 #['Alex', 'Tenglan', 'Eric', 'Rain', 'Tom', 'Amy'] print(name_list[-3:-1]) #从-3开始到-1，包括-3，不包括-1 #['Rain', 'Tom'] print(name_list[1:-1]) #从1开始到-1，下标有正有负时，正数在前负数在后 #['Tenglan', 'Eric', 'Rain', 'Tom'] print(name_list[::2]) #2表示，每个1个元素，就取一个 #['Alex', 'Eric', 'Tom'] #注：[-1:0] [0:0] [-1:2] 都是空
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"]
name_list.append("new") #append追加，加到最后，只能添加一个
print(name_list)
#['Alex', 'Tenglan', 'Eric', 'Rain', 'Tom', 'Amy', 'new']
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"] name_list.insert(3,"new") #insert插入,把"new"加到下标3的位置 print(name_list)
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"] name_list[2] = "solo" #把下标2的字符串换成solo print(name_list)
#3种删除方式
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"]
del name_list[3] #del删除，指定要删除的下标
print(name_list)
#['Alex', 'Tenglan', 'Eric', 'Tom', 'Amy']
name_list.remove("Tenglan") #remove删除，指定要删除的字符
print(name_list)
#['Alex', 'Eric', 'Tom', 'Amy']
name_list.pop() #pop删除，删除列表最后一个值
print(name_list)
#['Alex', 'Eric', 'Tom']
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"] age_list = [11,22,33] name_list.extend(age_list) #extend扩展,把列表age_list添加到name_list列表 print(name_list)
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"] copy_list = name_list.copy() #copy拷贝，对列表进行复制 print(copy_list) #注：之后会整理深浅copy的详细区分
name_list = ["Alex","Tenglan","Eric","Amy","Tom","Amy"]
print(name_list.count("Amy")) #count统计,统计列表Amy的个数
#2
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy","1","2","3"] name_list.sort() #sort排序，对列表进行排序 print(name_list) #['1', '2', '3', 'Alex', 'Amy', 'Eric', 'Rain', 'Tenglan', 'Tom'] name_list.reverse() #reverse翻转，对列表进行翻转 print(name_list) #['Tom', 'Tenglan', 'Rain', 'Eric', 'Amy', 'Alex', '3', '2', '1']
name_list = ["Alex","Tenglan","Eric","Rain","Tom","Amy"]
print(name_list.index("Tenglan")) #index索引,获取字符的下标
#1
#5种创建方式
age = 11,22,33,44,55 #直接写数字或者字符串，默认创建类型元组 字符串类型用引号'solo'
#输出： (11, 22, 33, 44, 55)
age = (11,22,33,44,55) #常见命名方式,()指定类型元组
#输出： (11, 22, 33, 44, 55)
age = tuple((11,22,33,44,55)) #tuple 以类的方式创建(()) 双括号 里面的()不可去掉
#输出： (11, 22, 33, 44, 55)
age = tuple([11,22,33,44,55]) #同(()) 效果一样 很少用 忘记它
#输出： (11, 22, 33, 44, 55)
age = tuple({11,22,33,44,55}) #({})创建的元组，随机排列 没卵用
#输出： (33, 11, 44, 22, 55)
##count #统计元组字符出现的次数
name = ('wupeiqi', 'alex','solo')
print(name.count('alex'))
# 1
##index #查看字符串所在的索引位置
name = ('wupeiqi', 'alex','solo')
print(name.index('solo'))
# solo
#两种创建方式：
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
print(info_dic)
#{'stu1102': 'LongZe Luola', 'stu1101': 'TengLan Wu', 'stu1103': 'XiaoZe Maliya'}
info_dic = dict({'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",})
print(info_dic)
#{'stu1102': 'LongZe Luola', 'stu1101': 'TengLan Wu', 'stu1103': 'XiaoZe Maliya'}
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
info_dic['stu1104'] = "JingKong Cang" #增加
print(info_dic)
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
info_dic["stu1101"] = "Jingkong Cang" #有相应的key时为修改，没有为增加
print(info_dic)
#3种删除方式
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
info_dic.pop('stu1101') #pop删除,指定删除的key
print(info_dic)
#{'stu1103': 'XiaoZe Maliya', 'stu1102': 'LongZe Luola'}
del info_dic['stu1102'] #del删除，指定删除的key
print(info_dic)
#{'stu1103': 'XiaoZe Maliya'}
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
info_dic.popitem() #随机删除，没卵用
print(info_dic)
#{'stu1101': 'TengLan Wu', 'stu1103': 'XiaoZe Maliya'}
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
print(info_dic.get('stu1102')) #get查找，通过key查找value值
#LongZe Luola
print(info_dic['stu1102']) #通过key直接查找，但是如果输入查找的key不存在的话，就会报错，get则不会
#LongZe Luola
"欧美":{
"www.youporn.com": ["很多免费的,世界最大的","质量一般"],
"www.pornhub.com": ["很多免费的,也很大","质量比yourporn高点"],
"letmedothistoyou.com": ["多是自拍,高质量图片很多","资源不多,更新慢"],
"x-art.com":["质量很高,真的很高","全部收费,屌比请绕过"]
},
"日韩":{
"tokyo-hot":["质量怎样不清楚,个人已经不喜欢日韩范了","听说是收费的"]
},
"大陆":{
"1024":["全部免费,真好,好人一生平安","服务器在国外,慢"]
}
}
av_catalog["大陆"]["1024"][1] += ",可以用爬虫爬下来"
print(av_catalog["大陆"]["1024"])
#['全部免费,真好,好人一生平安', '服务器在国外,慢,可以用爬虫爬下来']
info_dic = {'stu1101': "TengLan Wu",'stu1102': "LongZe Luola",'stu1103': "XiaoZe Maliya",}
for stu_nu in info_dic:
print(stu_nu,info_dic[stu_nu]) #循环默认提取的是key
#stu1103 XiaoZe Maliya
#stu1101 TengLan Wu
#stu1102 LongZe Luola
for k,v in info_dic.items(): #先把dict生成list，数据量大的时候费时，不建议使用
print(k,v)
#stu1103 XiaoZe Maliya
#stu1101 TengLan Wu
#stu1102 LongZe Luola
#标准创建方式
info_set = set(["alex","wupeiqi","eric","solo",11,22,33])
print(info_set,type(info_set))
#{33, 11, 'wupeiqi', 'solo', 'alex', 'eric', 22} <class 'set'>
#添加的两种方式
set_1 = set(["alex","wupeiqi","eric","solo"])
set_1.add(11) #add只能添加一个元素
print(set_1)
#{'alex', 'solo', 'eric', 11, 'wupeiqi'}
set_1 = set(["alex","wupeiqi","eric","solo"])
set_1.update([11,22,33])
print(set_1) #update可以添加多个元素
#{33, 11, 'alex', 'wupeiqi', 'eric', 22, 'solo'}
#删除的三种方式
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33])
set_1.remove("alex") #remove 删除指定元素
print(set_1)
#{'eric', 33, 'solo', 11, 22, 'wupeiqi'}
set_1.pop() #pop 随机删除元素
print(set_1)
#{33, 'wupeiqi', 11, 22, 'solo'}
set_1.discard("solo") #discard 删除指定元素，与remove区别在于，如果元素不存在也不会报错
set_1.discard(55)
print(set_1)
#{33, 'wupeiqi', 11, 22}
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33])
set_2 = set([11,22,33,44,55,66])
print(set_1.intersection(set_2)) #intersection 取两个set的交集 set_1和set_2可以互换位置
#{33, 11, 22}
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33])
set_2 = set([11,22,33,44,55,66])
print(set_1.union(set_2)) #union 取两个set集合的并集 set_1和set_2可以互换位置
#{33, 66, 11, 44, 'eric', 55, 'solo', 22, 'wupeiqi', 'alex'}
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33])
set_2 = set([11,22,33,44,55,66])
print(set_1.difference(set_2)) #difference 取两个set集合的差集 set_1有但是set_2没有的集合
#{'solo', 'eric', 'wupeiqi', 'alex'}
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33]) set_2 = set([11,22,33,44,55,66]) set_3 = set([11,22,33]) print(set_1.issubset(set_2)) #issubset 子集 #False print(set_1.issuperset(set_3)) #issuperset 父集 #True
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33])
set_2 = set([11,22,33,44,55,66])
print(set_1.symmetric_difference(set_2)) #symmetric_difference 对称差集=两个集合并集减去合集
#{66, 'solo', 'eric', 'alex', 55, 'wupeiqi', 44}
set_1 = set(["alex","wupeiqi","eric","solo",11,22,33]) set_2 = set([11,22,33,44,55,66]) set_union = set_1 | set_2 # 并集 set_intersection = set_1 & set_2 # 交集 set_difference = set_1 - set_2 # 差集 set_symmetric_difference = set_1 ^ set_2 # 对称差集
import time import sys for i in range(5): print(i), sys.stdout.flush() time.sleep(1) # 这样设计是为了打印一个数每秒五秒钟，但如果您运行它，因为它是现在（取决于您的默认系统缓冲）， # 你可能看不到任何输出 CodeGo.net，直到再一次全部，你会看到0 1 2 3 4打印到屏幕上。 # 这是输出被缓冲，除非你sys.stdout之后每print你不会看到从输出中取出sys.stdout.flush()网上看到的差别
import copy #import调用copy模块 Alex = ["Alex", 28, ["Python", "C#", "JavaScript"]] solo = Alex #直接赋值 # 修改前打印 print(id(Alex)) print(Alex) print([id(adr) for adr in Alex]) # 输出： 7316664 # ['Alex', 28, ['Python', 'C#', 'JavaScript']] # [2775776, 1398430400, 7318024] print(id(solo)) print(solo) print([id(adr) for adr in solo]) # 输出： 7316664 # ['Alex', 28, ['Python', 'C#', 'JavaScript']] # [2775776, 1398430400
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