[英]Python3 does not find modules installed by pip3
I'm having problems with python3.我在使用 python3 时遇到问题。 For some reason that I cannot figure out, the modules available in python3 are not the same as the ones installed via pip3.
出于某种我无法弄清楚的原因,python3 中可用的模块与通过 pip3 安装的模块不同。
Running pip3 list
in a Terminal returns:在终端中运行
pip3 list
返回:
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
nltk (3.2.2)
numpy (1.12.0)
pandas (0.19.2)
pip (9.0.1)
python-dateutil (2.6.0)
pytz (2016.10)
setuptools (25.2.0)
six (1.10.0)
wheel (0.29.0)
Running this script to see what modules python3
has available returns:运行此脚本以查看
python3
有哪些模块可用返回:
['cycler==0.10.0', 'matplotlib==1.5.3', 'nltk==3.2.1', 'numpy==1.11.2', 'pip==9.0.1', 'pyparsing==2.1.10', 'python-dateutil==2.6.0', 'pytz==2016.7', 'setuptools==18.2', 'six==1.10.0']
These two are not the same and I can't tell why.这两个不一样,我不知道为什么。
nltk
, for example, has an older version.例如,
nltk
有一个旧版本。 pandas
is missing. pandas
不见了。
I've installed python via homebrew and I'm running scripts via Textmate2.我已经通过自制软件安装了 python,我正在通过 Textmate2 运行脚本。 However, I have the same problem when I run code in terminal, via
python3
.但是,当我通过
python3
在终端中运行代码时,我遇到了同样的问题。 Both pip3 and python3 are installed in /usr/local/bin/
: pip3 和 python3 都安装在
/usr/local/bin/
:
$ which python3 pip3
/usr/local/bin/python3
/usr/local/bin/pip3
And that's also the version python3 is using:这也是 python3 正在使用的版本:
>>> import sys, os
>>> os.path.dirname(sys.executable)
'/usr/local/bin'
If someone could help me figure out why this is the case, and how I can fix it, I would very much appreciate the help.如果有人可以帮助我弄清楚为什么会这样,以及如何解决它,我将非常感谢您的帮助。
Look at the first line of the pip3
script.查看
pip3
脚本的第一行。
The first line (starting with #!
should point to the same executable as the symbolic link for python 3:第一行(以
#!
开头的应该指向与 python 3 的符号链接相同的可执行文件:
> head -n 1 /usr/local/bin/pip
#!/usr/local/bin/python3.6
> ls -ld /usr/local/bin/python3
lrwxr-xr-x 1 root wheel 9 Dec 25 22:37 /usr/local/bin/python3@ -> python3.6
If this is not the case, deinstall pip
and install it again with the correct Python version.如果不是这种情况,请卸载
pip
并使用正确的 Python 版本重新安装。
EDIT :编辑:
If you really want to make sure that you're using the the right Python with pip
, then call it as a module like this:如果你真的想确保你使用的是正确的 Python 和
pip
,那么将它作为一个模块调用,如下所示:
python3.7 -m pip list
If you get the error No module named pip
, then pip
is not installed for this version of python.如果您收到错误
No module named pip
,则该版本的 python 未安装pip
。
I ran to this problem in Windows.我在 Windows 中遇到了这个问题。 first of all I uninstall the package using cmd command
pip3 uninstall moduleName
.首先,我使用 cmd 命令
pip3 uninstall moduleName
卸载包。 Then based on python documentation I run command python -m pip install moduleName
and my problem solved!然后基于 python 文档我运行命令
python -m pip install moduleName
并且我的问题解决了!
Here is the documentation: Installing Python Modules这是文档:安装 Python 模块
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