pip: pip list --outdated --format=freeze does not return the right version of the outdated packages.

Description

To see the outdated packages, just pip list -o, but when I use --format=freeze, the command returns an output with the oldest versions and not the newest ones.

Expected behavior

Returns an output with the newest versions of the packages.

pip version

21.0.1

Python version

3.9.4

OS

macOS Big Sur

How to Reproduce

1. Get package from ‘…’
2. Then run ‘…’
3. An error occurs.

Output

(happiness) stephane@gandalf ~/s/g/m/happiness (main)> pip list -o
Package             Version Latest Type
------------------- ------- ------ -----
asgiref             3.3.1   3.3.4  wheel
decorator           4.4.2   5.0.5  wheel
Django              3.1.7   3.2    wheel
django-extensions   3.1.1   3.1.2  wheel
django-heroku       0.0.0   0.3.1  wheel
djangorestframework 3.12.2  3.12.4 wheel
Faker               6.5.0   8.0.0  wheel
gunicorn            20.0.4  20.1.0 sdist
idna                2.10    3.1    wheel
ipython             7.21.0  7.22.0 wheel
parso               0.8.1   0.8.2  wheel
prompt-toolkit      3.0.16  3.0.18 wheel
Pygments            2.8.0   2.8.1  wheel
urllib3             1.26.3  1.26.4 wheel
(happiness) stephane@gandalf ~/s/g/m/happiness (main)> pip list -o --format=freeze
asgiref==3.3.1
decorator==4.4.2
Django==3.1.7
django-extensions==3.1.1
django-heroku==0.0.0
djangorestframework==3.12.2
Faker==6.5.0
gunicorn==20.0.4
idna==2.10
ipython==7.21.0
parso==0.8.1
prompt-toolkit==3.0.16
Pygments==2.8.0
urllib3==1.26.3

Code of Conduct

I agree to follow the PSF Code of Conduct.

Hi all,

Here is my bug report about pip list -o --format=freeze

Thank you