这篇文章主要介绍了python去掉空白行实现代码,需要的朋友可以参考下
测试代码 php.txt
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python代码
代码一
# -*- 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("php.txt", "o.txt")
代码二
# -*- 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("php.txt", "o2.txt")
代码三:python2
#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])
代码解析:
1. Python split()通过指定分隔符对字符串进行切片,返回分割后的字符串列表。str.split()分隔符默认为空格。
2. 函数 writelines(list)
函数writelines可以将list写入到文件中,但是不会在list每个元素后加换行符,所以如果想每行都有换行符的话需要自己再加上。
例如:for line in lines:
outfopen.writelines(line+"\n")
3. .readlines() 自动将文件内容分析成一个行的列表,该列表可以由 Python 的 for ... in ... 结构进行处理。
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