How to check if a string is different string constant (such as '\n', '\t') with Python

Question

How to check if a String equals to Empty, and to a different string constant (such as '\n', '\t', etc.) with Python?

This is what I used:

if not text or text == '\n' or text == '\t':
    log.debug("param 'text': " + text)
    return None

how to do it better?

Possible duplicate of: http://stackoverflow.com/questions/9573244/most-elegant-way-to-check-if-the-string-is-empty-in-python — ShuklaSannidhya, Apr 26 '13 at 06:29
Not really a duplicate. The other question is specifically concerned with comparing against "". — Vishal, Apr 26 '13 at 09:08

score 2 · Answer 1 · answered Apr 26 '13 at 06:25

2

if not text or text.isspace():
    # empty param text

Regarding isspace, it returns True if there are only whitespace characters and at least one character.

answered Apr 26 '13 at 06:25

Jared

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score 2 · Accepted Answer · answered Apr 26 '13 at 06:26

2

if not text.rstrip():
  log.warning("Empty param 'text': " + text)
  return None

str.rstrip([chars]): The method rstrip() returns a copy of the string in which all chars have been stripped from the end of the string (default whitespace characters).

answered Apr 26 '13 at 06:26

Vishal

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Thank you very much, this is what I need! – Olga Apr 26 '13 at 07:49

score 0 · Answer 3 · edited Feb 24 '14 at 03:35

0

if not text in (None, '', '\n','\t'):

edited Feb 24 '14 at 03:35

apaul

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answered Apr 26 '13 at 06:16

vlad-ardelean

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How to check if a string is different string constant (such as '\n', '\t') with Python

3 Answers3