在安装mechanize后,我似乎无法导入它。
我已经尝试从pip、easy_install和通过python setup.py从这个repo安装:https://github.com/abielr/mechanize。所有这些都无济于事,因为每次我输入Python交互时,我得到:
Python 2.7.3 (default, Aug 1 2012, 05:14:39)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import mechanize
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named mechanize
>>>
我之前运行的安装报告已经成功完成,因此我希望导入能够正常工作。是什么导致了这个错误?
在我的情况下(WIN10主机上的Ubuntu 20.04虚拟机),我有一个混乱的情况,安装了许多版本的Python和不同点的共享库(在文件系统的许多点安装pip)。我指的是3.8.10 Python版本。
经过多次测试,我用谷歌搜索发现了一个建议(但是“对不起,我没有链接”)。下面是我为解决这个问题所做的:
From shell session on Ubuntu 20.04 VM, (inside the Home, in my case /home/hduser), I've started a Jupyter Notebook session with the command "jupyter notebook".
Then, when jupyter was running I've opened a .ipynb file to give commands.
First : pip list --> give me the list of packages installed, and, sympy
wasn't present (although I had installed it with "sudo pip install sympy"
command.
Last with the command !pip3 install sympy (inside jupyter notebook
session) I've solved the problem, here the screen-shot :
Now, with !pip list the package "sympy" is present, and working :
在我的例子中,我运行pip install Django==1.11,它不会从python解释器中导入。
浏览pip的命令,我发现pip show是这样的:
> pip show Django
Name: Django
Version: 1.11
...
Location: /usr/lib/python3.4/site-packages
...
注意位置显示的是'3.4'。我发现python-命令被链接到python2.7
/usr/bin> ls -l python
lrwxrwxrwx 1 root root 9 Mar 14 15:48 python -> python2.7
就在它旁边,我发现了一个名为python3的链接,所以我使用了它。还可以将链接更改为python3.4。这也能解决问题。