在Mac上运行Python3但没有Pip3吗？

Question

I need to get pip3 running on my Mac terminal for a project. I have python3 installed, and I can run it, but when I try to run pip3 freeze , it says my command is not found.

I thought it would be automatically installed when I installed Python3. I tried to sudo install it, but it still didn't do anything. What can I do?

Answer 1

Besides brew install pip3 , in case brew is not installed on your Mac, you can install pip3 via get_pip.py which can be found here . Assuming that python3 is already installed, cd to the directory where you saved get_pip.py and run the file with python3 get_pip.py . This should get pip3 installed on your machine.

Answer 2

On my MacBook Pro (10.13.5), which pip3 shows that it is located at /opt/local/bin/pip3 but it is a symlink to /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/pip3 .

This is the location of python3 if you installed it via MacPorts. If you installed it with HomeBrew, then it would be /usr/local/Cellar/python/3.7.0/bin/pip3 (again, version might vary).

Finding pip3

What I would do if I were you is first find out where your pip3 actually is by either using locate or trying to manually find it by typing (Change 3.6 to whatever version you're on.) either:

$ /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/pip3 --version

or:

$ /usr/local/Cellar/python/3.7.0/bin/pip3 --version

You should see something like:

pip 9.0.3 from /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (python 3.6)

Otherwise, use locate :

$ locate pip3

As a last resort, the slow find can also be useful:

$ sudo find / -name pip3

Build a Symlink

Then, make a symbolic link to that file in a path that is in your $PATH (again, ensure you replace the first path with the path to your actual pip3 ):

$ sudo ln -s /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/pip3 /opt/local/bin/pip3

Answer 3

Assuming you are using Python 3.4 or later in which pip is included by default, try the following command:

python3 -m pip freeze

When you use the -m command-line flag, python will search sys.path for the named module and execute its contents as the __main__ module. ( more here )

This solution will allow you to use pip by python3 -m pip , but in order to use pip3 directly you can:

• Install it via Homebrew :

  brew install pip3

• Install it with get-pip.py :

  curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py python get-pip.py

Answer 4

You could try brew install pip3 . Or check where pip is installed, that might point to Python 3's version.