i don't understand how to use a variable outside of a function?

[Rius2]

from this function:

def test(arg)
a = 0
if arg >3:
    a=1
return a

how do i use it in another function?:

def main():
    arg = rand.randrange(0,7)
    test(arg)
    if a = 1:
        print('I don't know what i'm doing')

[Larz60+]

Pass as an attribute

>>> def func1():
...     return 15
...
>>> def func2(value):
...     print('Value x 2 = {}'.format(value * 2))
...
>>> def main():
...     a = func1()
...     func2(a)
...
>>> main()
Value x 2 = 30

[buran]

based on your code:

import random

def test(arg):
    if arg > 3:
        a = 1
    else:
        a = 0
    return a

def main():
    arg = random.randrange(0,7)
    a = test(arg) # here you can use any name, not neccessary to be a
    if a == 1:
        print("I don't know what i'm doing")

more pythonic would be

import random
def test(arg):
    return arg >3

def main():
    arg = random.randrange(0,7)
    if test(arg):
        print("I don't know what i'm doing")

also note the double quotes of the string - otherwise you need to escape the single quotes

[Rius2]

so in my case it would be:

def test(arg)
    a = 0
    if arg > 5:
        a = 1
   return a

def main():
    arg = random.randrange
    z = test(arg)
    if z ==1:
        Print('Will this work?')

Thank both of you , now i think i can grasp functions.

[buran]

here is our tutorial https://python-forum.io/Thread-Basic-Functions

[nilamo]

so in my case it would be:

arg = random.randrange

Well, no.  You never call random.randrange, so arg is just a reference to the function itself.  So "Will this work" should never be printed.

[wavic]

Any function returns an object which you can assign to a variable.
So you define one. Simplified because I am lazy today:

def test(arg):
    return a

Then define another:

def second(some_argument):
    b = test(some_argument)
    if b != 'stupid example':
        return 'Good enough'

Now call 'second':

s = 'No?'
second(s)

You can pass any argument to a function and use it inside another one. some_argument could be any python object, however, it is called. Of course, its type has to be suitable to use it at all.