CODEWITHSUNDEEP
pythonpython-import
solopiu
solopiu

Reputation: 756

python skip importing a library

What I'd like to do is avoid an import that cause a problem. My code is like this:

main.py

import external_library

external_library.py

import package_with_problem

I know I could change external_library.py with something as

try:
    import package_with_problem
except:
    pass

but I'm looking for a solution to implement in main.py. I would like a skip function that takes the package name as parameters and avoid the import.

Upvotes: 2

Views: 1591

Answers (2)

Tomerikoo
Tomerikoo

Reputation: 19430

Just do in main.py the same as you would have in external_library.py. If you only want to skip a certain import, you can check the error:

try:
    import external_library
except ImportError as e:
    if "package_with_problem" not in e.msg:
        raise

This will "skip" the import of package_with_problem but will re-raise the error for any other package.

Upvotes: 1

solopiu
solopiu

Reputation: 756

I found a workaround, I believe it exists a better way to do this but anyway, this is my possible solution for now.

Create a new empty file.

new_empty_file.py

# nothing or print("Hello") to see something in output

main.py

import new_empty_file
import sys
sys.modules['package_with_problem'] = new_empty_file
import external_library # this should use package_with_problem in cache that is new_empty_file

If the import in external library has some subpackage, create a new function called as subpackage in new_empty_file as:

new_empty_file.py

def subpackage():
    return

Unfortunately, it is necessary to have package_with_problem in sys and installed, so, not a good solution, it only avoid importing the real library.

Upvotes: 0

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