ModuleNotFoundError:没有名为“facenet_pytorch”的模块，但它似乎确实安装了

Question

我在这个python3虚拟环境中：

(base) marco@pc01:~/PyTorchMatters/facenet_pytorch/examples$ pyenv virtualenvs
  3.7.3/envs/facenet_pytorch (created from /home/marco/.pyenv/versions/venv373)
  3.7.3/envs/venv373 (created from /home/marco/.pyenv/versions/3.7.3)
* facenet_pytorch (created from /home/marco/.pyenv/versions/venv373)
  venv373 (created from /home/marco/.pyenv/versions/3.7.3)

据我所知，所需的模块已经安装：

(base) marco@pc01:~/PyTorchMatters/facenet_pytorch/examples$ pip3 install facenet_pytorch
Requirement already satisfied: facenet_pytorch in /home/marco/.pyenv/versions/3.7.3
/envs/facenet_pytorch/lib/python3.7/site-packages (2.2.8)
Requirement already satisfied: requests in /home/marco/.pyenv/versions/3.7.3 
/envs/facenet_pytorch/lib/python3.7/site-packages (from facenet_pytorch) (2.23.0)
Requirement already satisfied: numpy in /home/marco/.pyenv/versions/3.7.3
/envs/facenet_pytorch/lib/python3.7/site-packages (from facenet_pytorch) (1.18.1)
Requirement already satisfied: chardet<4,>=3.0.2 in /home/marco/.pyenv/versions/3.7.3
/envs/facenet_pytorch/lib/python3.7/site-packages (from requests->facenet_pytorch) (3.0.4)
Requirement already satisfied: idna<3,>=2.5 in /home/marco/.pyenv/versions/3.7.3
/envs/facenet_pytorch/lib/python3.7/site-packages (from requests->facenet_pytorch) (2.9)
Requirement already satisfied: certifi>=2017.4.17 in /home/marco/.pyenv/versions/3.7.3
/envs/facenet_pytorch/lib/python3.7/site-packages (from requests->facenet_pytorch) 
(2019.11.28)
Requirement already satisfied: urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 in /home/marco/.pyenv
/versions/3.7.3/envs/facenet_pytorch/lib/python3.7/site-packages (from 
requests->facenet_pytorch) (1.25.8)

随着pip的冻结，它似乎确实安装在它的虚拟环境中：

(base) marco@pc01:~/PyTorchMatters/facenet_pytorch/examples$ pip3 freeze --local
certifi==2019.11.28
chardet==3.0.4
facenet-pytorch==2.2.8
idna==2.9
numpy==1.18.1
requests==2.23.0
urllib3==1.25.8

但是当我尝试执行这个单行代码时：

prova.py：

from facenet_pytorch import MTCNN

我得到了ModuleNotFoundError:没有名为“facenet_pytorch”的模块

(base) marco@pc01:~/PyTorchMatters/facenet_pytorch/examples$ python3 prova.py 
Traceback (most recent call last):
  File "prova.py", line 1, in <module>
    from facenet_pytorch import MTCNN
ModuleNotFoundError: No module named 'facenet_pytorch'

Desktop

• python

• pip3版本: pip-20.0.2

• OS: Ubuntu18.04.4版本:Python3.7.4

(更新)解决了:仅仅用installing (而不是pip3)安装它就解决了问题

马可

Answer 1

pip install facenet-pytorch

这为我解决了这个问题。