一个简单的按指定行数分割文件python代码，有时候分析系统记录的日志非常方便

gistfile1.py

#!/usr/bin/env python
#coding=utf-8

import time,re,os,sys

def module_path():
    """ This will get us the program's directory,
    even if we are frozen using py2exe"""

    if hasattr(sys, "frozen"):
        return os.path.dirname(sys.executable)
    return os.path.dirname(__file__)


def fenge(folder,filename):
    APPLICATION_PATH = module_path()
    outfolder = os.path.join(APPLICATION_PATH, folder)
    filepath = os.path.join(outfolder,filename)
    i,j,l = 1,0,0
    f = file(filepath,'r')
    s = f.readline()
    of = os.path.join(outfolder,  '%s.txt' % i)
    w = file(of,'w');
    while s:
        j,l = j + 1,l + 1
        sys.stdout.write('\r')
        print '正在处理 %s\%s 第 %s 行.' % (folder,filename,j),
        if j % 38000 == 0:
            sys.stdout.write('\r')
            print '文件 %s, 共 %s 行.' % (of,l)
            w.close()
            i,l = i + 1,0
            of = os.path.join(outfolder,  '%s.txt' % i)
            w = file(of, 'w')
        w.write(s)
        s = f.readline()
    w.write(s)
    w.close()
    sys.stdout.write('\r')
    print '文件 %s, 共 %s 行.' % (of, l+1)
    f.close()

if __name__ == "__main__":
    fenge('bbb','bb.txt')