When using --upgrade, it traverses and installs all versions

[Dawnnnnnn]

Environment

• pip version: pip 20.3.2
• Python version: Python 3.7.4
• OS:MacOS BigSur 11.1

Description

when I run pip3 install django(anything) --upgrade, It will traverse the installation of all versions`
Expected behavior

Install only the latest version
How to Reproduce

pip3 install django --upgrade
Output

$ pip3 install django --upgrade
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple/
Requirement already satisfied: django in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (2.2.5)
Collecting django
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/08/c7/7ce40e5a5cb47ede081b9fa8a3dd93d101c884882ae34927967b0792f5fb/Django-3.1.4-py3-none-any.whl (7.8 MB)
     |████████████████████████████████| 7.8 MB 2.5 MB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/19/c9/d51f1ddf9afc15f0567e7493e741b0ba283d5240ef1d2f1a1a76e0839ed3/Django-3.1.4.tar.gz (9.4 MB)
     |████████████████████████████████| 9.4 MB 32.8 MB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl (7.8 MB)
     |████████████████████████████████| 7.8 MB 104 kB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/98/d0/d55c4beb0fa8a48031777ee16c8d94c5ec2e66d43163a43b88f4d3e7a520/Django-3.1.3.tar.gz (9.3 MB)
     |████████████████████████████████| 9.3 MB 1.7 MB/s
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/50/22/4c91847beceadbb54b5a518909ed5000bb1777168c7d6b087e8f79e5e05b/Django-3.1.2-py3-none-any.whl (7.8 MB)
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/93/56/5c79283e5addc81931788bf9ca96063c01bf8c5e34c0d160f4e102a4d9d9/Django-3.1.2.tar.gz (9.4 MB)
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/01/a5/fb3dad18422fcd4241d18460a1fe17542bfdeadcf74e3861d1a2dfc9e459/Django-3.1.1-py3-none-any.whl (7.8 MB)
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/bb/15/6df0530f86ffc1efdadd98b749a5d330fa719a07a6c839eedbccd74e27a2/Django-3.1.1.tar.gz (9.3 MB)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/2b/5a/4bd5624546912082a1bd2709d0edc0685f5c7827a278d806a20cf6adea28/Django-3.1-py3-none-any.whl (7.8 MB)
     |████████████████████████████████| 7.8 MB 21.4 MB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/cc/bf/b9f5e4c4707bcabcd4202d78a4d23459d5de3083a7e7efde4dd215b997ac/Django-3.1.tar.gz (9.4 MB)
     |████████████████████████████████| 9.4 MB 67 kB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/20/65/c3bec6de30da7184a3632670a3ca9db305859a4db17e8bda42dee56f3245/Django-3.0.11-py3-none-any.whl (7.5 MB)
     |████████████████████████████████| 7.5 MB 1.9 MB/s
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/24/94/2bfe789a7ff881e4730a1a3d20cb28adacdcec1e8415bf7874c312cb3a03/Django-3.0.11.tar.gz (9.0 MB)
     |██▊                             | 768 kB 16 kB/s eta 0:08:19^C
ERROR: Operation cancelled by user

[uranusjr]

See #9284.