測試代碼 jb51.txt
1:www.jb51.net 2:www.jb51.net 3:www.jb51.net 4:www.jb51.net 5:www.jb51.net 6:www.jb51.net 7:www.jb51.net 8:www.jb51.net 9:www.jb51.net 10:www.jb51.net 11:www.jb51.net 12:www.jb51.net 13:www.jb51.net 14:www.jb51.net 15:www.jb51.net 16:www.jb51.net
python代碼
代碼一
# -*- coding: utf-8 -*- ''' python讀取文件,將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")
代碼二
# -*- coding: utf-8 -*- ''' python讀取文件,將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")
代碼三:python2
#coding:utf-8 import sys def delete(filepath): f=open(filepath,'a+') fnew=open(filepath+'_new.txt','wb') #將結果存入新的文本中 for line in f.readlines(): #對每一行先刪除空格,\n等無用的字符,再檢查此行是否長度為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"必須輸入文件路徑,最好不要使用中文路徑" else: delete(sys.argv[1])
效果圖
代碼解析:
1. Python split()通過指定分隔符對字符串進行切片,返回分割后的字符串列表。str.split()分隔符默認為空格。
2. 函數 writelines(list)
函數writelines可以將list寫入到文件中,但是不會在list每個元素后加換行符,所以如果想每行都有換行符的話需要自己再加上。
例如:for line in lines:
outfopen.writelines(line+"\n")
3. .readlines() 自動將文件內容分析成一個行的列表,該列表可以由 Python 的 for ... in ... 結構進行處理。
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