安装robotframework-retryfailed遇连接超时错误，求解决方案

问题现象 #

执行命令pip install -U robotframework-retryfailed时出现以下错误：

C:\Users\vengalam>pip install -U robotframework-retryfailed
Collecting robotframework-retryfailed
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000020EE969F588>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/robotframework-retryfailed/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000020EE968F188>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/robotframework-retryfailed/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000020EE968FE88>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/robotframework-retryfailed/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000020EE968F808>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/robotframework-retryfailed/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000020EE969E648>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/robotframework-retryfailed/
  Could not find a version that satisfies the requirement robotframework-retryfailed (from versions: )
No matching distribution found for robotframework-retryfailed

环境信息 #

• Python版本：3.7.4
• 已安装包列表：

C:\Users\vengalam>pip list
Package                        Version
------------------------------ ------------
bcrypt                         3.1.7
certifi                        2019.9.11
cffi                           1.13.2
chardet                        3.0.4
cryptography                   2.8
cx-Oracle                      7.2.2
et-xmlfile                     1.0.1
idna                           2.8
jdcal                          1.4.1
keyboard                       0.13.3
openpyxl                       2.6.2
paramiko                       2.6.0
pip                            19.0.3
pycparser                      2.16
pycryptodome                   3.9.4
PyNaCl                         1.3.0
requests                       2.22.0
robotframework                 3.1.2
robotframework-archivelibrary  0.4.0
robotframework-databaselibrary 1.2
robotframework-pabot           0.75
robotframework-requests        0.6.2
robotframework-seleniumlibrary 4.0.0a1
robotframework-sshlibrary      3.4.0
robotremoteserver              1.1
scp                            0.13.2
selenium                       3.141.0
setuptools                     40.8.0
six                            1.13.0
ssh2-python                    0.18.0.post1
urllib3                        1.25.3
xlrd                           1.2.0

解决步骤 #

1. 解决PyPI连接超时问题 #

错误核心是无法连接官方PyPI源导致超时，可切换国内镜像源重试，执行以下命令：

pip install -U robotframework-retryfailed -i https://pypi.tuna.tsinghua.edu.cn/simple

国内常用镜像源还有阿里云https://mirrors.aliyun.com/pypi/simple/、豆瓣https://pypi.douban.com/simple/等，可按需替换。

2. 确认包名正确性或尝试源码安装 #

如果换源后仍提示找不到包，需检查：

• 包名是否拼写错误，确认robotframework-retryfailed是否为正确的包名；
• 若该包已从PyPI下架，可查找其源码仓库，下载源码后执行以下命令手动安装：

python setup.py install

内容的提问来源于stack exchange，提问作者mahendra