Sharing variable among files?

[misterlisty]

If i declare a variable in boot.py is available to all files?

[livius]

@misterlisty
yes

[misterlisty]

thank you

[misterlisty]

ok, this works fine but it appears that if i chnage the value of this variable within a function then it appears to not be reflected within other function or files? I assume this has something to do with variable scope?

[livius]

@misterlisty

variable scope

yes, you must do this with global keyword
e.g.:

def myproc():
    global my_global_var
    my_global_var = 1

[robert-hh]

@livius That does not work for me. Did you try that?

[livius]

@robert-hh
i was too fast, you have right global is for same unit
simple use qualified name e.g:

a.py

myvar = 7

b.py

import a

def changea():
	a.myvar+= 2
	print(a.myvar)
	
def printa():
	print(a.myvar)

for test use

import b
b.changea()
>>>9
b.print(a)
>>>9