Python-动态导入模块并为其分配本地名称

Question

I'm fairly new to python, so I apologize for my lack of knowledge.

This is what I'm looking to do:

Say I currently have the following

import pandas as py
import numpy as np
...
import somePackage as someName

I want to be able to do this through having a dictionary of packages and names, to achieve something like this

imports = {'pandas' : 'py', 'numpy' : 'np' ... 'somePackage' : 'someName'}
for package in imports.keys():
    import package as imports[package]

How do I accomplish this?

Answer 1

The built-in function __import__ will do dynamic imports where the module name is specified in a variable. And you can make the assignment by updating globals() directly:

>>> imports = {'random':'r', 'statistics':'s'}
>>> for package, target in imports.items():
        globals()[target] = __import__(package)

>>> r.randrange(100)
16
>>> s.mean([10, 20, 61])
30.333333333333332