if var False

Question

In python you can write an if statement as follows  var   True if var      print  I  m here    is there any way to do the opposite without the     eg  var   False if  var      print  learnt stuff

User · Answer

Since Python evaluates also the data type NoneType as False during the check, a more precise answer is:

var = False
if var is False:
    print('learnt stuff')

This prevents potentially unwanted behaviour such as:

var = []  # or None
if not var:
    print('learnt stuff') # is printed what may or may not be wanted

But if you want to check all cases where var will be evaluated to False, then doing it by using logical not keyword is the right thing to do.

User · Answer

Use not  var   False if not var      print  learnt stuff

User · Answer

Python uses not instead of   for negation   Try   if not var       print  learnt stuff    instead

User · Answer

var   False if not var  print  learnt stuff

User · Answer

I think what you are looking for is the  not  operator   if not var   Reference page  http   www tutorialspoint com python logical operators example htm

[python] if var == False

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