pip3 TypeError: 'module' object is not callable' after update

Question 1

I am new in Python, I wanna install Jupyter Notebook in my console I enter the following:

pip3 install --upgrade pip

after that I have a error to use pip3 install other library, the console print:

File "/usr/bin/pip3", line 11, in <module>
    sys.exit(main())
TypeError: 'module' object is not callable

I don't know what I have to do.

I use sudo autoremove python3-pip after that I use sudo apt install python3-pip

Question 2

From the link by Bram, I just ran python3 -m pip uninstall pip, and it started to work again.

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