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

也许有点跑题了,但我在导入PyYAML时遇到了问题。指出你需要导入yaml。(我猜是经典的rtfm…)

其他回答

在我的情况下,我还必须为超级用户安装模块。

sudo su
pip install <module>

显然,superuse在某些情况下不能访问普通用户的文件。

当您通过easy_install或pip安装时,它是否成功完成?全输出是多少?您正在使用哪个python安装?如果您正在将模块安装到系统目录(如果您正在使用系统python安装),则可能需要在使用安装命令之前使用sudo。你的问题中没有太多有用的信息,但是一些工具可能会有帮助,包括:

echo $PYTHONPATH and/or echo $PATH: when importing modules, Python searches one of these environment variables (lists of directories, : delimited) for the module you want. Importing problems are often due to the right directory being absent from these lists which python, which pip, or which easy_install: these will tell you the location of each executable. It may help to know. Use virtualenv, like @JesseBriggs suggests. It works very well with pip to help you isolate and manage the modules and environment for separate Python projects.

对我来说,它是确保模块的版本与我使用的Python版本一致。我在一个装有Python 3.6的盒子上构建了这个映像,然后注入到一个恰好安装了3.7的Docker映像中,然后当Python告诉我这个模块没有安装时,我撞了头……

Python 3.6的36m bsonnumpy.cpython-36m-x86_64-linux-gnu.so

bsonnumpy.cpython-37m-x86_64-linux-gnu.so

今天,我发现setup.py包也会产生这个问题。

我有一个分类器< 3的设置

setup(
    name='data_reader',
    version='0.1',

    description='data_reader by Mithril ',
    long_description=long_description,

    author='Mithril',

    classifiers=[
        'Development Status :: 1 - Beta',
        'Programming Language :: Python :: 2',
        'Programming Language :: Python :: 2.6',
        'Programming Language :: Python :: 2.7',

        'Intended Audience :: Developers',
        'Operating System :: OS Independent',

        "License :: GPLv3",

        'Topic :: Internet :: WWW/HTTP',
        'Topic :: Software Development :: Libraries :: Tools',
        'Topic :: Software Development :: Libraries :: Python Modules',
    ],


)

我在conda env中使用python 3.7,我发现

pip install .
# or
pip install git+https://github.com/eromoe/data_reader

全部成功,但导入data_reader raise未找到。

经过一些测试,挖掘后只改变分类器

    classifiers=[
        'Development Status :: 1 - Beta',
        "Programming Language :: Python :: 3",
        'Intended Audience :: Developers',
        'Operating System :: OS Independent',
        "License :: GPLv3",
        'Topic :: Internet :: WWW/HTTP',
        'Topic :: Software Development :: Libraries :: Tools',
        'Topic :: Software Development :: Libraries :: Python Modules',
    ],

重新安装,导入恢复正常!

另外,请确保不要将pip3与pip混淆。我发现与pip一起安装的包不能与python3一起工作,反之亦然。