为什么我的 Anaconda 安装 Python 找不到一些包？

Question

For some reason, I seem unable to import certain modules in my macOS Anaconda install of Python.

$which python
/opt/anaconda3/bin/python

I can use some packages (pandas loads fine, for example), but wget and pypdf2 cannot be found. I've removed and installed both again using the following commands:

$conda install -c conda-forge pypdf2
$conda install -c anaconda wget

They appear to be installed:

$conda list
# Name                    Version                   Build  Channel
pypdf2                    1.26.0                   pypi_0    pypi
wget                      1.20.1               h051b688_0    anaconda

When importing, I get the following 'module not found' errors

>>>import wget
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'wget'

>>>import pypdf2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'pypdf2'
   

Any ideas what's going on here and what else I can do to troubleshoot? Thank you.

Answer 1

wget is not a Python package. It is a command-line program used to download things from the inte.net. You can use it as wget on the command-line.

Your error with pypdf2 occurs because you are not importing it properly. Use

import PyPDF2

as per the examples .