`pip Install --upgrade Pip` Vs. `python -m Pip Install --upgrade Pip`
Solution 1:
The difference is between pip
and python -m pip
; the rest of the command doesn't matter. The reason to prefer the latter is that you're ensuring that the python
you normally use is the one which will provide the pip
module you invoke. Otherwise, there is a risk that the pip
executable found in your PATH
is from an unrelated or out of date Python installation; it might install packages, but your regular python
invocation won't find them (because they're installed for a non-default Python).
You can also modify the second command to invoke specific Python executable names (python2.7
vs. python3.8
), or even absolute paths if you might have versions with the same name installed in multiple places.
Solution 2:
The first one
pip install --upgrade pip
is to invoke pip
as a command. The actual python interpretor called is not explicit. The second one is calling the python interpretor explicitly, so you know which one is called.
There should be no difference, as the __main__.py
in the module and the pip
script are both point to the same entry point, unless in the case that the default python is different from the one used by the pip script
Solution 3:
If i am correct, pip install --upgrade pip
and python -m pip install --upgrade pip
are the same unless you specify the pip or python version.
The latter is preferred because it attempts to upgrade the pip associated with the specified python version (e.g. python3.7 -m pip install --upgrade pip) even if the main python version is different (python command may refer to any python version).
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