global variable not working python
trying to assign a global variable in a function will result in the function creating a new variable
with that name even if theres a global one. ensure to declare a as global in the function before any
assignment.
a = 7
def setA(value):
global a # declare a to be a global
a = value # this sets the global value of aglobal python
"""
USING GLOBALS ARE A BAD IDEA, THE BEST WAY TO PERFORM AN ACTION WHICH NEEDS GLOBALS WOULD
BE TO USE RETURN STATEMENTS. GLOBALS SHOULD ONLY EVER BE USED IN RARE OCCASIONS WHEN YOU
NEED THEM
"""
# allows you to modify a variable outside its class or function
EXAMPLE:
def test_function():
global x
x = 10
test_function()
print(f"x is equal to {x}") # returns x is equal to 10how to make variable global in python
global variable
variable = 'whatever'global variable python
# Python global variable
# Probably should not use this, just pass in arguments
x = 0 # variable is in outer scope
print(x) # prints x (0)
def use_global_variables():
# if using a global variable, the variable will not need to be mention while calling the function
global x # calling the x variable from a function
x += 1
print(x) # prints x after adding one in the function (1)
use_global_variables
=============================================
# Output:
0
1global variable python
#it is best not to use global variables in a function
#(pass it as an argument)
a = 'This is global a'
def yourFunction():
global a
return a[0:2]global variable python
a = 0
def testFor():
global a
if(a == 0):
#run codeCopyright © 2021 Codeinu
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