Removing spaces and empty lines from a file Using Python

Question

I have a file which contains a value 2000,00.

But it contains spaces after 2000,00 and empty lines.

I want to remove all the spaces and empty lines, if some

Answer 1

This should work as you wish:

file(filename_out, "w").write(file(filename_in).read().strip())

EDIT: Although previous code works in python 2.x, it does not work python 3 (see @gnibbler comment) For both version use this:

open(filename_out, "w").write(open(filename_in).read().strip())