[global] #原文件存放目录 dir1=F:workpython3595pyservertest #新文件存放目录 dir2=F:workpython3595pyservertest1

#!/usr/bin/python # -*- coding: utf-8 -*- import os,sys,ConfigParser class file_openate(object): def __init__(self):     #初如化读取数据库配置     dir_config = ConfigParser.ConfigParser()     file_config=open('config.ini',"rb")     dir_config.readfp(file_config)     self.dir1=str(dir_config.get("global","dir1"))     self.dir1=unicode(self.dir1,'utf8')     self.dir2=str(dir_config.get("global","dir2"))     self.dir2=unicode(self.dir2,'utf8')     file_config.close() #print self.dir2 #self.dir1="F:\work\python\3595\pyserver\test" def file_list(self):     input_name_han="软件有不确认性,前期使用最好先备份,以免发生数据丢失,确认备份后,请输入要分割的字节大小,按b来计算".decode('utf-8')     print input_name_han     while 1: input_name=raw_input("number:") if input_name.isdigit():     input_name=int(input_name)     os.chdir(self.dir1)     for filename in os.listdir(self.dir1): os.chdir(self.dir1) #print filename name, ext = os.path.splitext(filename) file_size=int(os.path.getsize(filename)) f=open(filename,'r') chu_nmuber=0 while file_size >= 1:     #print file_size     chu_nmuber=chu_nmuber + 1     if file_size >= input_name: file_size=file_size - input_name a=f.read(input_name) os.chdir(self.dir2) filename1=name + '-' + str(chu_nmuber) + ext new_f=open(filename1,'a') new_f.write(a) new_f.close() #print file_size     else: a=f.read() os.chdir(self.dir2) filename1=name + '-' + str(chu_nmuber) + ext new_f=open(filename1,'a') new_f.write(a) new_f.close() break print "分割成功".decode('utf-8') + filename f.close() else:     print "请输入正确的数字,请重新输入".decode('utf-8') file_name=file_openate() file_name.file_list()

#!/usr/bin/env python #--*-- coding:utf-8 --*-- import os class SplitFiles():     """按行分割文件"""     def __init__(self, file_name, line_count=200):         """初始化要分割的源文件名和分割后的文件行数"""         self.file_name = file_name         self.line_count = line_count     def split_file(self):         if self.file_name and os.path.exists(self.file_name):             try:                 with open(self.file_name) as f : # 使用with读文件                     temp_count = 0                     temp_content = []                     part_num = 1                     for line in f:                         if temp_count < self.line_count:                             temp_count += 1                         else :                             self.write_file(part_num, temp_content)                             part_num += 1                             temp_count = 1                             temp_content = []                         temp_content.append(line)                     else : # 正常结束循环后将剩余的内容写入新文件中                         self.write_file(part_num, temp_content)             except IOError as err:                 print(err)         else:             print("%s is not a validate file" % self.file_name)     def get_part_file_name(self, part_num):         """"获取分割后的文件名称：在源文件相同目录下建立临时文件夹temp_part_file，然后将分割后的文件放到该路径下"""         temp_path = os.path.dirname(self.file_name) # 获取文件的路径（不含文件名）         part_file_name = temp_path + "temp_part_file"         if not os.path.exists(temp_path) : # 如果临时目录不存在则创建             os.makedirs(temp_path)         part_file_name += os.sep + "temp_file_" + str(part_num) + ".part"         return part_file_name     def write_file(self, part_num, *line_content):         """将按行分割后的内容写入相应的分割文件中"""         part_file_name = self.get_part_file_name(part_num)         print(line_content)         try :             with open(part_file_name, "w") as part_file:                 part_file.writelines(line_content[0])         except IOError as err:             print(err) if __name__ == "__main__":     sf = SplitFiles(r"F:multiple_thread_read_file.txt")     sf.split_file()

#!/usr/bin/python ########################################################################## # split a file into a set of parts; join.py puts them back together; # this is a customizable version of the standard unix split command-line # utility; because it is written in Python, it also works on Windows and # can be easily modified; because it exports a function, its logic can # also be imported and reused in other applications; ##########################################################################       import sys, os kilobytes = 1024 megabytes = kilobytes * 1000 chunksize = int(1.4 * megabytes)   # default: roughly a floppy       def split(fromfile, todir, chunksize=chunksize):     if not os.path.exists(todir):  # caller handles errors os.mkdir(todir)    # make dir, read/write parts     else: for fname in os.listdir(todir):    # delete any existing files     os.remove(os.path.join(todir, fname))     partnum = 0     input = open(fromfile, 'rb')   # use binary mode on Windows     while 1:       # eof=empty string from read chunk = input.read(chunksize)      # get next part <= chunksize if not chunk: break partnum  = partnum+1 filename = os.path.join(todir, ('partd' % partnum)) fileobj  = open(filename, 'wb') fileobj.write(chunk) fileobj.close()    # or simply open().write()     input.close()     assert partnum <= 9999 # join sort fails if 5 digits     return partnum      if __name__ == '__main__':     if len(sys.argv) == 2 and sys.argv[1] == '-help': print 'Use: split.py [file-to-split target-dir [chunksize]]'     else: if len(sys.argv) < 3:     interactive = 1     fromfile = raw_input('File to be split? ')       # input if clicked     todir    = raw_input('Directory to store part files? ') else:     interactive = 0     fromfile, todir = sys.argv[1:3]  # args in cmdline     if len(sys.argv) == 4: chunksize = int(sys.argv[3]) absfrom, absto = map(os.path.abspath, [fromfile, todir]) print 'Splitting', absfrom, 'to', absto, 'by', chunksize       try:     parts = split(fromfile, todir, chunksize) except:     print 'Error during split:'     print sys.exc_info()[0], sys.exc_info()[1] else:     print 'Split finished:', parts, 'parts are in', absto if interactive: raw_input('Press Enter key') # pause if clicked

#!/usr/bin/python ########################################################################## # join all part files in a dir created by split.py, to recreate file.  # This is roughly like a 'cat fromdir/* > tofile' command on unix, but is # more portable and configurable, and exports the join operation as a # reusable function.  Relies on sort order of file names: must be same # length.  Could extend split/join to popup Tkinter file selectors. ##########################################################################       import os, sys readsize = 1024       def join(fromdir, tofile):     output = open(tofile, 'wb')     parts  = os.listdir(fromdir)     parts.sort()     for filename in parts: filepath = os.path.join(fromdir, filename) fileobj  = open(filepath, 'rb') while 1:     filebytes = fileobj.read(readsize)     if not filebytes: break     output.write(filebytes) fileobj.close()     output.close()       if __name__ == '__main__':     if len(sys.argv) == 2 and sys.argv[1] == '-help': print 'Use: join.py [from-dir-name to-file-name]'     else: if len(sys.argv) != 3:     interactive = 1     fromdir = raw_input('Directory containing part files? ')     tofile  = raw_input('Name of file to be recreated? ') else:     interactive = 0     fromdir, tofile = sys.argv[1:] absfrom, absto = map(os.path.abspath, [fromdir, tofile]) print 'Joining', absfrom, 'to make', absto       try:     join(fromdir, tofile) except:     print 'Error joining files:'     print sys.exc_info()[0], sys.exc_info()[1] else:    print 'Join complete: see', absto if interactive: raw_input('Press Enter key') # pause if clicked