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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 1:www.php.cn
2:www.php.cn
3:www.php.cn
4:www.php.cn
5:www.php.cn
6:www.php.cn
7:www.php.cn
8:www.php.cn
9:www.php.cn
10:www.php.cn
11:www.php.cn
12:www.php.cn
13:www.php.cn
14:www.php.cn
15:www.php.cn
16:www.php.cn
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python代码
代码一
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # -*- 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" )
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代码二
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # -*- 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" )
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代码三:python2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | #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])
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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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Python去掉字符串中空格的方法
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