<![CDATA[Sharing variable among files?]]>If i declare a variable in boot.py is available to all files?

]]>https://forum.pycom.io/topic/2139/sharing-variable-among-filesRSS for NodeTue, 14 Jul 2026 00:43:02 GMTMon, 13 Nov 2017 14:31:17 GMT60<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 14:31:17 GMT]]>If i declare a variable in boot.py is available to all files?

]]>https://forum.pycom.io/post/12665https://forum.pycom.io/post/12665Mon, 13 Nov 2017 14:31:17 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 14:32:01 GMT]]>@misterlisty
yes

]]>https://forum.pycom.io/post/12666https://forum.pycom.io/post/12666Mon, 13 Nov 2017 14:32:01 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 14:43:12 GMT]]>thank you

]]>https://forum.pycom.io/post/12667https://forum.pycom.io/post/12667Mon, 13 Nov 2017 14:43:12 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 14:55:05 GMT]]>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?

]]>https://forum.pycom.io/post/12669https://forum.pycom.io/post/12669Mon, 13 Nov 2017 14:55:05 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 18:19:14 GMT]]>@misterlisty

variable scope

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

def myproc():
    global my_global_var
    my_global_var = 1
]]>https://forum.pycom.io/post/12677https://forum.pycom.io/post/12677Mon, 13 Nov 2017 18:19:14 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 19:01:30 GMT]]>@livius That does not work for me. Did you try that?

]]>https://forum.pycom.io/post/12678https://forum.pycom.io/post/12678Mon, 13 Nov 2017 19:01:30 GMT<![CDATA[Reply to Sharing variable among files? on Mon, 13 Nov 2017 22:22:06 GMT]]>@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
]]>https://forum.pycom.io/post/12679https://forum.pycom.io/post/12679Mon, 13 Nov 2017 22:22:06 GMT