Installing pip is not working in python < 3.6

Question

I am starting to make a app using bitbucket CI and i am using the following steps to deploy the application and the steps to install pip is failing.

 script:
    - apt-get update
    - apt-get install -y python-dev
    - curl -O https://bootstrap.pypa.io/get-pip.py
    - python get-pip.py
    ... and a few more steps

Dont know why but python get-pip.py step fails with the following error.

Traceback (most recent call last):
  File "get-pip.py", line 24226, in <module>
    main()
  File "get-pip.py", line 199, in main
    bootstrap(tmpdir=tmpdir)
  File "get-pip.py", line 82, in bootstrap
    from pip._internal.cli.main import main as pip_entry_point
  File "/tmp/tmpUgc5ng/pip.zip/pip/_internal/cli/main.py", line 60
    sys.stderr.write(f"ERROR: {exc}")
                                   ^

SyntaxError: invalid syntax

This worked fine upto yesterday. Not sure why this is not working now.

I thought it may be because of windows but i checked in my local machine running linux but these steps but they worked fine.

https://stackoverflow.com/q/65866417/7976758, https://stackoverflow.com/q/65865755/7976758 Found in https://stackoverflow.com/search?tab=newest&q=%5bpip%5d%20SyntaxError — phd, Jan 24 '21 at 10:15
@phd Thanks. I'd be glad to accept the answer if you post it. :) — Sagar Acharya, Jan 24 '21 at 10:20
To make it a better answer I need to know what Python version do you use? 2.7? — phd, Jan 24 '21 at 10:33
@phd Its just used in bitbucket CI not sure about the version. so i presume its 2.7 — Sagar Acharya, Jan 24 '21 at 12:54

phd · Accepted Answer · 2022-05-18T13:44:11.433

94

pip 21.0 dropped support for Python 2 and 3.5. The later versions require Python 3.6+. The syntax f"" is supported by Python 3.6+.

To install pip for Python 2.7 install it from https://bootstrap.pypa.io/pip/2.7/ :

- curl -O https://bootstrap.pypa.io/pip/2.7/get-pip.py
- python get-pip.py
- python -m pip install --upgrade "pip < 21.0"

The last command is to upgrade to the latest supported version.

For Python 2.7 the latest supported is currently pip 20.3.4.
For Python 3.6 install from https://bootstrap.pypa.io/pip/3.6/
For Python 3.5 install from https://bootstrap.pypa.io/pip/3.5/
For Python 3.4 install from https://bootstrap.pypa.io/pip/3.4/

For Python 3.4 the upgrade command is

python -m pip install --upgrade "pip < 19.2"

edited May 18 '22 at 13:44

answered Jan 24 '21 at 13:31

phd

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6

The upgrade command is not needed, as get-pip.py will install the latest supported version – Colin Pickard Feb 04 '21 at 16:16
4

@ColinPickard I prefer to be: a) explicit; b) to write down a command for future reference if a user would ever want to try to upgrade `pip` once again. – phd Feb 04 '21 at 16:19
This is fine. But what is the command for 3.5. After downloading from the link? – Shivani Jun 12 '21 at 14:13
1

@Shivani The same as in the post: `python get-pip.py` – phd Jun 12 '21 at 14:17
This does not work for me - pip stays in version 8.1.1 instead of the installed: ```Successfully installed pip-20.3.4``` – Roy Levy Aug 03 '21 at 14:18
@RoyLevy Fina all `pip` scripts in the `$PATH` (`type -a pip`) and remove excessive/old ones. – phd Aug 03 '21 at 14:47

score 10 · Answer 2 · answered Jun 01 '21 at 03:40

10

I solved it by firstly run

python -m pip install --upgrade "pip < 19.2"

and then

python -m pip install --upgrade "pip < 21.0".

It seems reinstall my pip 20.3.4 and the error disappreared!

answered Jun 01 '21 at 03:40

Instein

978
7
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This is quite strange but, yeah it fixed my problem too. – su27 Jun 01 '21 at 10:11
Same thing happened to me. pip is wonky as hell. – Martin Sep 15 '21 at 17:41
You're a life saver. Installing pip is apparently rocket science, but this works. – MintMelt Mar 15 '22 at 19:55

score 1 · Answer 3 · answered Nov 10 '21 at 22:27

This worked for me:On Mac:

Install pyenv as well as upgrade your python following the instructions on this here

Then in your terminal, if you run python -V and you still get the old version(system predefined version) showing:

To resolve this:

In your terminal run: alias python=python3

Then in your terminal execute python and you should now see that your system is using the python version you installed-:That is if you followed and completed the steps Here Correctly.

Restart your terminal(close/reopen):

Now you can finally install pip:

Read more about pip instalation steps [here][3]

1:In your terminal execute :$ python -m ensurepip --upgrade

2: Download the script, from https://bootstrap.pypa.io/get-pip.py.

But..**NB**: instead of navigating to the exact link provided,check out the available versions of pip here: pipversions

Select the latest version:

Then select getpip.py link to get the file and save it into your directory on your machine:

cd into the folder where you saved the newly downloaded script and execute:

Then execute:

python get-pip.py

Pip installed successfully:

score 1 · Answer 4 · answered Nov 11 '21 at 03:02

1

For me python 3.5 on aws ec2 below worked curl -O https://bootstrap.pypa.io/pip/3.5/get-pip.py

Then sudo python3.5 get-pip.pyenter image description here

answered Nov 11 '21 at 03:02

Narender

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Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Nov 11 '21 at 06:23

score 0 · Answer 5 · edited Apr 01 '21 at 03:08

I have also tried all thing but my solution was download old get-pip version and install.

download: curl -O https://bootstrap.pypa.io/2.7/get-pip.py the file get-pip.py
install: python get-pip.py or python2 get-pip.py
enjoy

This is worked on Debian systems.

Edit: A better solution is always to install a Python version that is long supported. If at all you need to work with an older version - only then must one resort to the above workaround.

Installing pip is not working in python < 3.6

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