无法安装python模块答案

【问题标题】：Not able to install python modules无法安装python模块
【发布时间】：2019-07-07 02:56:59
【问题描述】：

在安装 python 模块时，我得到了：

C:\Users\sesa384714>python -m pip install matplotlib
Collecting matplotlib
  Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x0408BE30>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/matplotlib/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x0408B310>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/matplotlib/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x0408B650>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/matplotlib/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x0408B410>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/matplotlib/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x0408B530>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/matplotlib/
  Could not find a version that satisfies the requirement matplotlib (from versions: )
No matching distribution found for matplotlib

【问题讨论】：

您的互联网连接正常吗？
你有哪个版本的 Python？
看起来您位于阻止您与 pypi.python.org 连接的防火墙后面
安装的Python版本是3.6.2

标签： python python-3.x python-2.7 numpy matplotlib

【解决方案1】：

当您的互联网连接速度较慢时，有时会出现此类错误，请检查您的互联网连接或离线尝试
https://pypi.org/project/matplotlib/#files

【讨论】：