How to upgrade pip in windows XP 32 bits?

Hello. How do I find the latest working version of Pip that installs in? Installation by the usual method does not work, since the latest version is probably not compatible with the old operating system. I have installed Python 3.4.3.
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Hi,

This is likely unrelated to the environment. Try python -m pip install --upgrade pip and see whether that works.

More recent versions of pip provides a better message (suggesting python -m pip) in this situaion.

Thank you That helped. Only after installation I see another error.
I could not insert a link to this forum this time.
C:\Python34\Scripts>pip install pipenv
Collecting pipenv
Downloading https://files.pythonhosted.org/packages/13/b4/3ffa55f77161cff9a522
0f162670f7c5eb00df52e00939e203f601b0f579/pipenv-2018.11.26-py3-none-any.whl (5.2
MB)
|████████████████████████████████| 5.2MB 91kB/s
Requirement already satisfied: pip>=9.0.1 in c:\python34\lib\site-packages (from
pipenv) (19.3.1)
ERROR: Package ‘pip’ requires a different Python: 3.4.3 not in ‘>=2.7,!=3.0.,!=
3.1.
,!=3.2.,!=3.3.,!=3.4.*’

After :
Successfully installed pip-19.3.1 or when I installed pipenv:
I have error. i no have working Python 3.4.3.
I am doing this experiment, turning on the disk virtualization with the operating system and installed programs. Now I will return the reverse state by rebooting the computer.
I will try again, checking immediately after updating the pip, does the Python work.

The second time, the Python did not break, but I still saw the error:
ERROR: Package ‘pip’ requires a different Python: 3.4.3 not in ‘>=2.7,!=3.0.,!=
3.1.
,!=3.2.,!=3.3.,!=3.4.*’

I tried installing another package:
pip install requests
And I saw among other lines of the log:
Installing collected packages: certifi, idna, urllib3, chardet, requests
WARNING: The script chardetect.exe is installed in ‘C:\Python34\Scripts’ which
is not on PATH.
Consider adding this directory to PATH or, if you prefer to suppress this warn
ing, use --no-warn-script-location.
Successfully installed certifi-2019.9.11 chardet-3.0.4 idna-2.8 requests-2.21.0
urllib3-1.24.3

Text:
WARNING: The script chardetect.exe is installed in ‘C:\Python34\Scripts’ which
is not on PATH.
Consider adding this directory to PATH or, if you prefer to suppress this warn
ing, use --no-warn-script-location.
It was highlighted in yellow.