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Python 错误:ModuleNotFoundError:没有名为“的模块”<moduleName> &#39;

[英]Python Error: ModuleNotFoundError: No module named '<moduleName>'

I am trying to import several modules that I know for a fact that are installed, but I am getting the ModuleNotFoundError: No module named '' error.我正在尝试导入几个我知道已安装事实的模块,但我收到 ModuleNotFoundError: No module named '' 错误。

$ sudo -H pip install numpy
    Requirement already satisfied: numpy in /usr/local/lib/python3.6/site-packages (1.18.1)
$ python3

Python 3.6.9 (default) 
>>> import numpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
>>> import PrettyTable
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'PrettyTable'

Can you advise me on how to fix this problem?你能告诉我如何解决这个问题吗?

Python3 and pip are most likely pointing to different versions of python. Python3 和 pip 最有可能指向不同版本的 Python。 Try the following:请尝试以下操作:

sudo python3 -m pip install numpy

This will use the pip command associated with the python3 environment.这将使用与 python3 环境关联的 pip 命令。

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