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?


当前回答

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 :

其他回答

我有类似的问题(在Windows上),根本原因在我的情况下是杀毒软件!它有“自动遏制”功能,用某种虚拟机包装正在运行的进程。 症状是:pip安装someemodule在一个cmd行窗口中正常工作,从另一个进程执行时导入someemodule失败,并出现错误

ModuleNotFoundError: No module named 'somemodule'

我无法让PYTHONPATH正常工作。我意识到添加export修复了这个问题:

(工作)

export PYTHONPATH=$PYTHONPATH:~/test/site-packages

vs.

(没有工作)

PYTHONPATH=$PYTHONPATH:~/test/site-packages

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 :

大多数可能的情况已经在解决方案中涵盖,只是分享我的案例,我碰巧在一个环境中安装了一个包(例如X),而我正在另一个环境中导入包(例如Y)。因此,始终确保您从安装包的环境中导入包。

我一直在用脑袋撞显示器,直到一个年轻的实习生告诉我,秘诀是在模块目录中“python setup.py install”。

出于某种原因,从那里运行设置可以让它正常工作。

需要明确的是,如果你的模块名是"foo":

[burnc7 (2016-06-21 15:28:49) git]# ls -l
total 1
drwxr-xr-x 7 root root  118 Jun 21 15:22 foo
[burnc7 (2016-06-21 15:28:51) git]# cd foo
[burnc7 (2016-06-21 15:28:53) foo]# ls -l
total 2
drwxr-xr-x 2 root root   93 Jun 21 15:23 foo
-rw-r--r-- 1 root root  416 May 31 12:26 setup.py
[burnc7 (2016-06-21 15:28:54) foo]# python setup.py install
<--snip-->

如果您试图从任何其他目录通过调用其路径来运行setup.py,那么您最终会得到一个borked安装。

不工作:

python /root/foo/setup.py install

做的工作:

cd /root/foo
python setup.py install