Why it's not error message

Question

The (total) variable has been defined after function definition but the code worked normally

https://code.sololearn.com/czvByhfmh05c/?ref=app

Answer 1

The function is called after the definition of variable total, so there is no issue here! Python cares if a variable exists only when the function is called, not before!

Answer 2

Note that the following code will throw an error.

def foo():
total+=1
return total
total=0
print(foo())

Answer 3

Because total isn't a global variable.

def foo() :
global total
total+=1
return total

No error but value of total changes

Answer 4

Thèophile I don't understand what do you mean?

Answer 5

By global variable I mean a variable that can be modified everywhere in a program. Here your variable total isn't global variable.
I only answered back to Diego...

Like Diego said, his code will produce an error because total isn't a global variable.
I don't know if it's clear... I explain so bad, sorry!

Answer 6

https://code.sololearn.com/cMUN8eg09QH6/?ref=app

Answer 7

I got it thanks for all of you 💛