测试代码 zzvips.txt
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1:www.zzvips.com
2:www.zzvips.com
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4:www.zzvips.com
5:www.zzvips.com
6:www.zzvips.com
7:www.zzvips.com
8:www.zzvips.com
9:www.zzvips.com
10:www.zzvips.com
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python代码
代码一
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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("zzvips.txt", "o.txt")
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代码二
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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:
line = line.strip()
if len(line)!=0:
outfopen.writelines(line)
outfopen.write('\n')
infopen.close()
outfopen.close()
delblankline("zzvips.txt", "o2.txt")
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代码三：python2
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#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。
原文链接：http://blog.csdn.net/qq_32113189/article/details/79578490