Python removes multiple implementation codes for blank lines

This article mainly introduces Python to remove the blank line implementation code, the need for friends can refer to the following

Test Code Php.txt

1:www.php.cn2:www.php.cn3:www.php.cn4:www.php.cn5:www.php.cn6:www.php.cn7:www.php.cn8:www.php.cn9:www.php.cn10 : www.php.cn11:www.php.cn12:www.php.cn13:www.php.cn14:www.php.cn15:www.php.cn16:www.php.cn

Python code

Code One

#-*-Coding:utf-8-*-"Python reads the file, removes the blank line from the file ' 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")

Code two

#-*-Coding:utf-8-*-"Python reads the file, removes the blank line from the file ' 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.st RIP ()  if Len (line)!=0:   outfopen.writelines (line)   outfopen.write (' \ n ') infopen.close () Outfopen.close ( ) Delblankline ("Php.txt", "O2.txt")

Code Three: 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 Wait for useless characters, and then check if this row is 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 "must enter file path, preferably do not use Chinese path"  Else:   Delete (sys.argv[1])

Code parsing:

1. Python split () slices the string by specifying a delimiter, returning the segmented list of strings. The Str.split () delimiter defaults to a space.

2. function Writelines (list)

The function Writelines can write a list to a file, but does not add a newline character after each element of the list, so you need to add it yourself if you want to have a newline character for each line.

For example: For line in lines:

Outfopen.writelines (line+ "\ n")

3.. readlines () automatically parses the contents of the file into a list of rows that can be used by Python for ... in ... Structure for processing.