python去掉空白行的多种实现代码

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# -*- coding: utf-8 -*-'''python读取文件，将文件中的空白行去掉'''def delblankline(infile, outfile): infopen = open(infile, 'r',encoding="utf-8") outfopen = open(outfile, 'w',encoding="utf-8") lines = infopen.readlines() for line in lines:  if line.split():   outfopen.writelines(line)  else:   outfopen.writelines("") infopen.close() outfopen.close()delblankline("jb51.txt", "o.txt")

# -*- coding: utf-8 -*-'''python读取文件，将文件中的空白行去掉'''def delblankline(infile, outfile): infopen = open(infile, 'r',encoding="utf-8") outfopen = open(outfile, 'w',encoding="utf-8") lines = infopen.readlines() for line in lines:  line = line.strip()  if len(line)!=0:   outfopen.writelines(line)   outfopen.write('/n') infopen.close() outfopen.close()delblankline("jb51.txt", "o2.txt")

#coding:utf-8 import sys def delete(filepath):  f=open(filepath,'a+')  fnew=open(filepath+'_new.txt','wb')   #将结果存入新的文本中  for line in f.readlines():         #对每一行先删除空格，/n等无用的字符，再检查此行是否长度为0   data=line.strip()   if len(data)!=0:    fnew.write(data)    fnew.write('/n')  f.close()  fnew.close()   if __name__=='__main__':  if len(sys.argv)==1:   print u"必须输入文件路径，最好不要使用中文路径"  else:   delete(sys.argv[1])