2021 Python 2.7 install PIP
Since the mainstream version of `Python` is already `3.x`, many tutorials on the Internet are no longer able to install PIP, so please record
PIP
2021 Python PIP Could not find a version that satisfies the requirement pip<21.0
This kind of problem is due to domestic network restrictions that can’t connect to the specified download address. You need to configure a domestic acceleration source.
2021 Python PIP Could not find a version that satisfies the requirement skimage
This kind of problem is due to domestic network restrictions that can’t connect to the specified download address. You need to configure a domestic acceleration source.
pip watercress source proxy
For some reason, the access to the official pypi is unstable, very slow and even some cannot be accessed from time to time