问题
I'm trying to update pip using pip install --upgrade pip, but I get a "requirement satisfied" error and an "outdated version" message at the same time
$ pip install --upgrade pip
Requirement already up-to-date: pip in
/Users/user/Envs/proj/lib/python2.7/site-packages
You are using pip version 9.0.1, however version 9.0.3 is available.
You should consider upgrading via the 'pip install --upgrade pip'
command.
How do I update?
回答1:
Recently, Python.org sites stopped supporting TLS version 1.0 and 1.1, which could be causing the chicken-and-egg problem you are facing. Try upgrading pip without using pip:
curl https://bootstrap.pypa.io/get-pip.py | python
回答2:
These two commands worked for me:
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
then:
python get-pip.py
回答3:
Try:
Right Click Anaconda Prompt (Run as Admin)
>> conda update pip
(It worked for me)
回答4:
The curl answer above didn't work for me. This worked for me
sudo python -m pip install --upgrade pip
来源：https://stackoverflow.com/questions/49743961/cannot-upgrade-pip-9-0-1-to-9-0-3-requirement-already-satisfied