How to delete all blank lines in the file with the help of python?

Question

For example, we have some file like that:

first line second line  third line 

And in result we have to get:

first line second line third line 

Use ONLY python

Answer 1

The with statement is excellent for automatically opening and closing files.

with open('myfile','rw') as file:     for line in file:         if not line.isspace():             file.write(line) 

Answer 2

import fileinput for line in fileinput.FileInput("file",inplace=1):     if line.rstrip():         print line