python2.7 reached the end of_pip2 安装包踩坑

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我是靠谱客的博主超级大雁，最近开发中收集的这篇文章主要介绍python2.7 reached the end of_pip2 安装包踩坑，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

报错：

DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)': /simple/dateutil/

WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)': /simple/dateutil/

WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)': /simple/dateutil/

WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)': /simple/dateutil/

WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)': /simple/dateutil/

Could not fetch URL https://pypi.org/simple/dateutil/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/dateutil/ (Caused by SSLError(SSLEOFError(8, u'EOF occurred in violation of protocol (_ssl.c:727)'),)) - skipping

ERROR: Could not find a version that satisfies the requirement dateutil (from versions: none)

ERROR: No matching distribution found for dateutil

pip2 install sklearn -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com