How to remove empty lines with re?

[Klaus Alexander Seistrup]

Anand Pillai wrote:

> Here is the complete code.
>
> import re
>
> empty=re.compile('^$')
> for line in open('test.txt').readlines():
>     if empty.match(line):
>         continue
>     else:
>         print line,

The .readlines() method retains any line terminators, and using the
builtin print will suffix an extra line terminator to every line,
thus effectively producing an empty line for every non-empty line.
You'd want to use e.g. sys.stdout.write() instead of print.


  // Klaus

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