pip install安装软件包报错：Requirement already satisfied

Posted 2023-04-02 CA-CA

报错信息：

C:\\Users\\13512>pip install pygame
Requirement already satisfied: pygame in c:\\users\\13512\\appdata\\local\\programs\\python\\python39\\lib\\site-packages (2.1.2)

原因分析：
需要指定路径

解决方案：
使用 pip install --target=安装路径
如：pip install --target=c:\\users\\13512\\appdata\\local\\programs\\python\\python39\\lib\\site-packages pygame

注意：--target=后紧跟安装路径无需空格

执行结果：

C:\\Users\\13512>pip install --target=c:\\users\\13512\\appdata\\local\\programs\\python\\python39\\lib\\site-packages pygame
Collecting pygame
  Using cached pygame-2.1.2-cp39-cp39-win_amd64.whl (8.4 MB)
Installing collected packages: pygame
Successfully installed pygame-2.1.2

可使用 pip list 查看是否成功安装

C:\\Users\\13512>pip list
Package           Version
----------------- -------
asttokens         2.0.5
backcall          0.2.0
black             21.12b0
click             8.0.3
colorama          0.4.4
decorator         5.1.1
et-xmlfile        1.1.0
executing         0.8.2
ipython           8.0.1
jedi              0.18.1
matplotlib-inline 0.1.3
mypy-extensions   0.4.3
openpyxl          3.0.9
parso             0.8.3
pathspec          0.9.0
pickleshare       0.7.5
pip               21.3.1
platformdirs      2.4.1
prompt-toolkit    3.0.24
pure-eval         0.2.1
pygame            2.1.2
Pygments          2.11.2
setuptools        57.4.0
six               1.16.0
stack-data        0.1.4
tomli             1.2.3
traitlets         5.1.1
typing_extensions 4.0.1
wcwidth           0.2.5
 

pip install 报错

问题描述，在使用pip安装django相关软件包时，提示错误如下：

[[email protected] install]# pip install django==1.6
Downloading/unpacking django==1.6
Cannot fetch index base URL https://pypi.python.org/simple/
Could not find any downloads that satisfy the requirement django==1.6
Cleaning up...
No distributions at all found for django==1.6
Storing debug log for failure in /root/.pip/pip.log

解决方案：使用国内镜像

加上参数"-i http://pypi.v2ex.com/simple"，即换成国内镜像

[[email protected] install]# pip  install django==1.6 -i http://pypi.v2ex.com/simple
Downloading/unpacking django==1.6
  Real name of requirement django is django
  http://pypi.v2ex.com/simple/django/1.6 uses an insecure transport scheme (http). Consider using https if pypi.v2ex.com has it available
  http://pypi.v2ex.com/simple/django/ uses an insecure transport scheme (http). Consider using https if pypi.v2ex.com has it available
  Downloading Django-1.6-py2.py3-none-any.whl (6.7MB): 6.7MB downloaded
Installing collected packages: django
Successfully installed django
Cleaning up...
[[email protected] install]#