remote: [20:44:36+0000] Collecting tensorflow==2.1.0
remote: [20:44:36+0000] Downloading tensorflow-2.1.0-cp37-cp37m-manylinux2010_x86_64.whl (421.8 MB)
remote: ...............................................................
remote: ...
remote: .........................................................................................................................................................................................................................................................................................................
remote: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ' ("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/tensorflow-estimator/
remote: [20:51:54+0000] Collecting tensorflow-estimator==2.1.0
remote: ..........
remote: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out. (read timeout=15)")': /packages/18/90/b77c328a1304437ab1310b463e533fa7689f4bfc41549593056d812fab8e/tensorflow_estimator-2.1.0-py2.py3-none-any.whl
remote: [20:52:09+0000] Downloading tensorflow_estimator-2.1.0-py2.py3-none-any.whl (448 kB)
您可能与服务器的连接速度很慢。尝试增加超时时间。签出共享的解决方案here：
尝试：
sudo pip install --default-timeout=100 future
或
export PIP_DEFAULT_TIMEOUT=100