Pandas installation problem

I tried installing pandas but got the following error:

ModuleNotFoundError: No module named 'pandas'

Here’s what I did to try to fix it in IDLE:

import sys
print(sys.executable)

This is what I got:

/Library/Frameworks/Python.framework/Versions/3.11/bin/python3.11

I did this next:

pip -V

This is what I got:

NameError: name 'pip' is not defined. Did you mean: 'zip'?

I don’t know what to do next; I’m lost; I still consider myself a beginner.

What do you get from python -m pip -V?

Please also read:

Thanks for getting back to me so fast! Here’s what I got from python -m pip -V:

invalid syntax
#still have a problem with the word "pip"

I tried installing pandas but got the following error:

ModuleNotFoundError: No module named 'pandas'

That’s ok, it is a third party module.

Here’s what I did to try to fix it in IDLE:

import sys
print(sys.executable)

This is what I got:

/Library/Frameworks/Python.framework/Versions/3.11/bin/python3.11

Right, so you’re on MacOS with Python 3.11.

I did this next:

pip -V

This is what I got:

NameError: name 'pip' is not defined. Did you mean: 'zip'?

This indicates to me that you’re typing this at Python’s >>>
interactive prompt, like this:

 >>> pip -V
 Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
 NameError: name 'pip' is not defined. Did you mean: 'zip'?

It is always helpful to copy/paste the entire command with its prompt
(here, the >>>) and the full output. As text, not a screenshot.

pip is a command and should be run at your shell prompt, not the
Python prompt. The usual incantation actually runs it using Python and
looks like this:

 [~]fleet2*> python3 -m pip install pandas
 Requirement already satisfied: pandas in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (2.1.4)
 Requirement already satisfied: numpy<2,>=1.22.4 in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (from pandas) (1.26.2)
 Requirement already satisfied: python-dateutil>=2.8.2 in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (from pandas) (2.8.2)
 Requirement already satisfied: pytz>=2020.1 in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (from pandas) (2023.3.post1)
 Requirement already satisfied: tzdata>=2022.1 in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (from pandas) (2023.4)
 Requirement already satisfied: six>=1.5 in ./var/venv/3.10.6-pyenv/lib/python3.10/site-packages (from python-dateutil>=2.8.2->pandas) (1.16.0)

 [notice] A new release of pip is available: 24.0 -> 24.1
 [notice] To update, run: pip install --upgrade pip

I’ve already got pandas installed, so it mostly tells me I’ve already
done that. Your output should be more … fulfilling.

Here [~]fleet2*> is my shell prompt and python3 should be whatever
command you used to start Python. This form ensures that pip installs
to the same Python you’re using, as it is possible to have multiple
Python environments, and people sometimes install into one environment
and then use another, not realising the disconnect.

It’s not working.

You’re typing that in IDLE at the Python prompt, but you should be typing it at the system prompt.

Hi,

just an fyi, there is an alternative to pandas. Its called polars.

Pandas vs Polars (deepnote.com)

The above link includes an introductory video.

Do you understand what the Terminal program is on your computer? You should use that to type the command.

Okay, I have terminal app open on my computer and I did what you said but this is what I got.

After you open the terminal, do not put in that Python command at the top. Write the pip command directly.

Is this how I should write it?

loannguyen@Loans-MacBook-Air ~ % pip -V

If so, it doesn’t work because I got this:

zsh: command not found: pip

Could you show me how to do it right with codes or images?

Okay, now try python -m pip -V. All in one command.

loannguyen@Loans-MacBook-Air ~ % python -m pip -V

I got this:

zsh: command not found: python

Try python3 instead of python.

It seem to work


What’s next?

python3 -m pip install pandas


I got an error, so I have to follow these codes, am I right?

python3 -m venv path/to/venv
source path/to/venv/bin/activate
python3 -m pip install xyz

Or should I do this?

brew install pipx

Please copy paste text as text between code fences instead of as a screenshot.

Yes, you’re probaby better off making a virtualenv with python3 -m venv path/to/venv etc. Adjust path/to/venv for your convenience. Just venv would b fine.

So that code does 3 things:

  • creates a venv
  • sources the activate script from inside that venv for so that your shell now finds python3 from the venv, not from the former system python3
  • runs the venv python3 to do your pip stuff

The second step is an optional step. You can also just overtly invoke the venv Python:

/the/path/to/the/venv/bin/python3 -m pip install pandas

The activate script makes that convenient.