python小脚本-- tab符号转space符号

一段小脚本，用于将python文件中的tab转换为spaces，默认为一个1tab = 4 spaces.

# -*- coding: utf-8 -*-"""author:Robin Chan in lab313usage: tab2spacea python script use to change tab to spacesopts:1--inputfilename2--outputfilename3--1/2 tab2space or space2tab4--tabsize,means 1 tab = tabsize spaces"""#import getoptimport sysdef tab2spacefuc(inputfile,outputfile,tabsize):    try:       fp = open(inputfile,"r+")       newfp = open(outputfile,"w")    except Exception,info:        print info    inStr = '\t'    outStr = tabsize*' '    for eachline in fp.readlines():        newStr = eachline.replace(inStr,outStr)        newfp.write(newStr)    fp.close()    newfp.close()    def space2tabfuc(inputfile,outputfile,tabsize):    try:       fp = open(inputfile,"r+")       newfp = open(outputfile,"w")    except Exception,info:        print info    #inStr = tabsize*' '    #outStr = '\t'    num = 0    for eachline in fp.readlines():        i = 0        while i < len(eachline)-1:            i = i + 1            if eachline[i] ==' ':                num = num + 1                if num == tabsize:                    eachline[i-tabsize:i] = '\t'            else:                num = 0        newStr = eachline        newfp.write(newStr)    fp.close()    newfp.close()    if __name__ =="__main__":    inputfile = sys.argv[1]#input file name    outputfile = sys.argv[2]#output file name    if len(sys.argv[1:]) < 3:#default set        fuc = 1#tab2space        tabsize = 4#default tabsize = 4,means 1 tab = 4 spaces    else:        fuc = sys.argv[3]#tab2space or space2tab        tabsize = sys.argv[4]#tabsize    if fuc == 1:        tab2spacefuc(inputfile,outputfile,tabsize)    else:        space2tabfuc(inputfile,outputfile,tabsize)