How do I import variable packages in Python like using variable variables ($$) in PHP?

Question

I want to import some package depending on which value the user chooses.

The default is file1.py:

Answer 1

As Fredrik Lundh states:

Anyway, here’s how these statements and functions work:

import X imports the module X, and creates a reference to that module in the current namespace. Or in other words, after you’ve run this statement, you can use X.name to refer to things defined in module X.

from X import * imports the module X, and creates references in the current namespace to all public objects defined by that module (that is, everything that doesn’t have a name starting with “_”). Or in other words, after you’ve run this statement, you can simply use a plain name to refer to things defined in module X. But X itself is not defined, so X.name doesn’t work. And if name was already defined, it is replaced by the new version. And if name in X is changed to point to some other object, your module won’t notice.

from X import a, b, c imports the module X, and creates references in the current namespace to the given objects. Or in other words, you can now use a and b and c in your program.

Finally, X = __import__(‘X’) works like import X, with the difference that you 1) pass the module name as a string, and 2) explicitly assign it to a variable in your current namespace.

And by the way that's the last one method that you're intrested in.

Simply write (for example):

var = "datetime"
module = __import__(var)