Published Jan 03 2021
When you declare a variable, that variable is visible in parts of your program, depending on where you declare it.
If you declare it outside of any function, the variable is visible to any code running after the declaration, including functions:
age = 8
def test():
print(age)
print(age) # 8
test() # 8
We call it a global variable.
If you define a variable inside a function, that variable is a local variable, and it is only visible inside that function. Outside the function, it is not reachable:
def test():
age = 8
print(age)
test() # 8
print(age)
# NameError: name 'age' is not defined
I wrote an entire book on this topic 👇
© 2023 Flavio Copes
using
Notion to Site.
Follow on Twitter
Solopreneur? Wannabe? Adventure awaits