Project scene:
During the installation using pip, it prompts to upgrade pip, but the pip version is too low to upgrade.
solution:
Install pip manually: download pip-21.0.1.tar.gz on the official website https://pypi.org/project/pip/#files , and install it from the source code:
Unzip the file: tar xzvf pip-21.0.1.tar.gz
enter the unzipped directory: cd pip-21.0.1/
install: sudo python setup.py install
view version:pip -V
