How to import a module from a variable?

Question

Python

I wrote a code that checks for the presence of a module:
try:
import this
except ModuleNotFoundError:
system('pip install this') The
question is, how can I programmatically substitute other modules instead of 'this'?

Answer 1

You don’t need to want this
. Better the application will swear that there are no packages, and the user will manually create the environment and install the dependencies.
You only need to create requirements.txt / Pipfile and indicate in the manual that manual installation of dependencies is required
Or create a package and write the same for "auto " install dependencies from the same files in setup.py

Answer 2

You can use importlib . But don't, the idea of ​​automatically installing modules is a bad idea.

Answer 3

Use eval

Answer 4

exec or eval. exec('try:\n import '+this+'\nexcept...')