Software reliability

[kjm]

Can anyone explain to me why

from network import LTE; lte=LTE()

would be more reliable & less like to generate a

NameError: name 'lte' is not defined

later in the program than

import network; lte=network.LTE()

[robert-hh]

@kjm There is no difference between the two options. If you see one, check whether there is a difference in the scope of lte symbol, like global vs. local. A global symbol can be seen everywhere in the code, but creation or assignment in a function or class is local, unless you define it explicitly as global.

[crumble]

@kjm

Hard to tell without more details.

Do you import all your stuff at the beginning or somewhere inside the script?

• do you really reach the declaraiont path?
• have you checked for try/catch?
• checked memory fragmentation?
• checked that callbacks will be handeled only after the declaration
• ...

[kjm]

I think I might have a flash memory problem, something that has haunted me with GPYs from the getgo. If I upload then remove then upload boot.py & main.py several times I seem to get a more stable system. It's like the first write of new software is not enough.