命令：pip3 install -U pip virtualenv
錯誤1：
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) a
fter connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.V
erifiedHTTPSConnection object at 0x0000000004689148>, 'Connection to pypi.org ti
med out. (connect timeout=15)')': /simple/pip/
解決辦法：
設置代理
pip3 --proxy http://XXXXXXX:80 install -U pip virtualen
錯誤2：
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None))
after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFI
CATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certif
icate (_ssl.c:1076)'))': /packages/db/9e/df208b2baad146fe3fbe750eacadd6e49bcf2f2
c3c1117b7192a7b28aec4/virtualenv-16.7.2-py2.py3-none-any.whl
解決辦法：
設置信任
pip3 --proxy http://XXXXXXX:80 --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org install -U pip virtualen
命令：pip install --upgrade pip
錯誤3：
ERROR: Could not install packages due to an EnvironmentError: [WinError 5] アク
セスが拒否されました。: 'C:\\Users\\XXXXX\\AppData\\Local\\Temp\\pip-uninstal
l-1vv0f5e0\\pip.exe'
Consider using the `--user` option or check the permissions.
解決辦法：
--user添加
pip --proxy http://XXXXXXX:80 --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org install --upgrade pip --user
錯誤4：
FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecat
ed; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)t
ype'.
解決辦法：
問題在於numpy1.17.0版本過高，我換成了numpy1.16.0
卸載1.17.0
pip uninstall numpy
安裝1.16.0
pip --proxy http://XXXXXXX:80 --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org install numpy==1.16
錯誤5：
I tensorflow/core/platform/cpu_feature_guard.cc:142]
Your CPU supports instructions that this TensorFlow binary was not compiled to
use: AVX2
解決辦法：暫時屏蔽這些warning輸出的辦法.
import os
os.environ['TF_CPP_MIN_LOG_LEVEL']='2'