print r'C:\some\name'

print """\
  Usage: thingy [OPTIONS]
  -h      Display this usage message
   -H hostname    Hostname to connect to
   """

'Py' 'thon'

s="abcde"
s[0]
s[-1]
s[-5]
s[:-1] #去掉最后一个字符，比如换行符
+---+---+---+---+---+---+

| P | y | t | h | o | n |

+---+---+---+---+---+---+

0 1 2 3 4 5 6

-6 -5 -4 -3 -2 -1

1. a = ‘leonis'
if a.endswith(‘is'):
print ‘is'

1. a = ‘leonis'
if ‘o' in a:
print ‘a'

1. a= ‘leonis'
if a.find(‘on') != -1:
print(‘on')

 a = ' '
mylist = ['Brazil','Russia','India','China']
print a.join(mylist)

mylist = ['Brazil','Russia','India','China']
print ‘_'.join(mylist)

 b = 'my..name..is..leonis'
print b
print b.split('..')

b = ‘my..name..is..leonis'
print b
print b.split(‘..',1)