How to turn variable true and false using function?

[hsunteik]

can I use

def A(var):
    var=True
A(var)
Print(var)

Output:
True

If not,what do I do?

[Yoriz]

What do you mean by turn a variable true and false, it can't be both.
Your function does not return any thing at the moment so it's result will book None.
What does your functions input look like and what do you expect it's output to be?

[j.crater]

I believe hsunteik was asking if he can assign True to a variable within a function, and keep that value (globally) also after function completed execution.

If that is what you meant then yes, it will work. Just make sure of course, regarding your example snippet, that you have "var" declared beforehand.

[Ofnuts]

You can't because Boolean variables are immutable. If you need a function to change the value variable, use a return statement, and assign the return value to the variable.

def longerThatFive(s):
   return len(s)>5

t1=longerThanFive('abc')
t2=longerThanFive('abcdef')

print t1,t2

[Larz60+]

def toggle_bool(var):
   return not var

if __name__ == '__main__':
   myvar = True
   for i in range(5):
       myvar = toggle_bool(myvar)
       print('iteration: {}, var = {}'.format(i, myvar))

results:

Output:
iteration: 0, var = False
iteration: 1, var = True
iteration: 2, var = False
iteration: 3, var = True
iteration: 4, var = False

[hsunteik]

Yes,that is what I meant .
Thanks