在Python中将文本值转换为模块类型

Question

我想看看这些库是否已经在python环境中安装了下面的代码。

import os
libraries=['pandas','paramico','fnmatch'] #list of libraries to be installed 
for i in libraries:
print("Checking the library", i ," installation")
try:
import i
print("module ", i ," is installed")
except ModuleNotFoundError:
print("module ", i, " is not installed")

数组值没有被转换为模块类型，并且所有内容都显示未安装，因此如何将文本值从数组转换为模块类型。

在上面的例子中，没有安装pandas和paramico，但是安装了fnmatch。

Answer 1

使用importlib.import_module:

import os
import importlib
libraries=['pandas','paramico','fnmatch'] #list of libraries to be installed 
for i in libraries:
print("Checking the library", i ," installation")
try:
importlib.import_module(i)
print("module ", i ," is installed")
except ModuleNotFoundError:
print("module ", i, " is not installed")

输出示例:

Checking the library pandas  installation
module  pandas  is installed
Checking the library paramico  installation
module  paramico  is not installed
Checking the library fnmatch  installation
module  fnmatch  is installed