globvar = 0
def set_globvar_to_one():
global globvar # Needed to modify global copy of globvar
globvar = 1
def print_globvar():
print(globvar) # No need for global declaration to read value of globvar
set_globvar_to_one()
print_globvar() # Prints 1
global variable
variable = 'whatever'
#A global variable can be accessed from any function or method.
#However, we must declare that we are using the global version and not the local one.
#To do this, at the start of your function/method write "global" and then the name of the variable.
#Example:
myVariable = 1
def myFunction():
global myVariable
print(myVariable)
myFunction()
a = 'this is a global variable'
def yourFunction(arg):
#you need to declare a global variable, otherwise an error
global a
return a.split(' ')
global n
n = 'whatever'
a = 0
def testFor():
global a
if(a == 0):
#run code
global x
x=1
x = 5 #Any variable outside a function is already a global variable
def GLOBAL():
global y #if a variable is inside a function, use the 'global' keyword to make it a global variable
y = 10 # now this variable (y) is global
# 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
1
#A global variable can be accessed from the hole program.
global var = "Text"
global variablename # to initialise global variable
variablename = 1 # To set the value
def f():
global s
print(s)
s = "Zur Zeit nicht, aber Berlin ist auch toll!"
print(s)
s = "Gibt es einen Kurs in Paris?"
f()
print(s)
a = input('Hello: ')
if a == 'world':
global b
b = input('Here')
print b
#Prints the input for be as a result
x = "global"
def foo():
print("x inside:", x)
foo()
print("x outside:", x)
#Create a variable inside a function, with the same name as the global variable
x = "awesome"
def myfunc():
x = "fantastic"
print("Python is " + x)
myfunc()
print("Python is " + x)
#### A_FILE.PY
a_global_variable = "Hello"
####sys.path.append(".")
##### B_FILE.PY
import a_file
output = a_file.a_global_variable
print(output)
------> Hello
name = "Abdullah" # creates global variable
def func():
global name # calls the name variable from global scope
name = "Kemal" # Changes name variable
func()
print(name) # global name variable will be changed because of the global keyword