Come rendere variabile globale in python
Esempi di codice
globale in python
a = 'this is a global variable'
def yourFunction(arg):
#you need to declare a global variable, otherwise an error
global a
return a.split(' ')
variabile globale 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]python globale
"""
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 10
variabile globale 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
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