I’m fairly new to python and I’m wondering how to store a variable that has been changed in a function to the rest of the script. Using a simple example of transfering a number between two defined variables:
From = 1000
To = 0
def transfer(From, To, amount):
From - amount
To + amount
transfer(From, To, 100)
print(From)
Even though ‘From’ has been subtracted by 100 in the function, if I try to access it outside the function it is still the original value. I wish to make the changes in the function global, but not sure how to do that.
Sorry if this is a trivial question, but if someone can explain the reasons and workings behind this it would be great. Thank you.
>Solution :
You can modify a global variable from within a function by using the global keyword
From = 1000
To = 0
def transfer(amount):
global From, To
From -= amount
To += amount
transfer(100)
print(From)
900