Can I use init.py to make imports available globally?

Question

I have the following in my __init__.py to avoid the repeated import of the typing library:

from typing import Dict, List, Tuple

yet, when I use Dict in my package code, it raises a NameError 'Dict' is not defined.

Do I have to include the above import statement explicitly in every class?

Note that typing is not my own module, so it is not inside the package directory

Generally speaking, one can add new built-ins by modifying the `builtins` module on-the-fly. See [How to add builtin functions?](https://stackoverflow.com/questions/6965090/how-to-add-builtin-functions). — martineau, Nov 03 '20 at 19:11

score 0 · Answer 1 · edited Nov 03 '20 at 18:33

0

The import statement has to go at the top (not always) of the code you are programming every time.

__init__.py

from typing import Dict, List, Tuple
    ^ this will not affect main.py 
Dict(blah)
...

Main.py

from typing import Dict, List, Tuple
Dict(jjjj)

edited Nov 03 '20 at 18:33

martineau

answered Nov 03 '20 at 18:30

dontbanmeplz

"has to go at the top (not always)" — huh? – martineau Nov 03 '20 at 18:35
that is straight forward with a script, but the package only defines classes, and I don't want the end-user to have to declare all imports when they use the package – Uliw Nov 03 '20 at 18:39
It can also go in the middle of the program as long as it is in front of ```Dict()``` @martineau – dontbanmeplz Nov 03 '20 at 18:39
Then use ```from typing import *``` @Uliw – dontbanmeplz Nov 03 '20 at 18:40
No adding it to main.py – dontbanmeplz Nov 03 '20 at 18:47
Halleluja, I did not see the forest for all the trees! Upon import, all module code is executed, even so, no class is instantiated yet. Thanks! – Uliw Nov 03 '20 at 19:01

Can I use __init__.py to make imports available globally?