This question already has answers here:
Use different Python version with virtualenv
(41 answers)
Closed 1 year ago.
I am very new to Python. I am trying to install a library called Mesa (https://mesa.readthedocs.io/en/master/index.html) in a virtual environment, but each time I try to clone the repository I get the error message: An error occurred while installing pandas==1.2.4
I believe the problem is that I have installed Python 3.9, but Mesa works with Python 3.7. I have installed Python 3.7 on my computer also, but do not know how to make a virtual environment which runs Python 3.7.
I have virtualenv installed but this is as far as I have gotten... very specific answers would be much appreciated as I still don't really know what I am doing!
From my experience the easiest way is using Anaconda and creating environments with specific versions inside it. https://www.anaconda.com/
The second way I use is google colab its really fast if I just want to check something on different version and requires no setup just lunch it from your google account
With python3.8:- virtualenv -p python3.8 env_name
replace python version like python3.9, python3.7..
Related
My project has an python version(3.10),i want to add python (3.6) version.
i dont want to delete the old version and my pc has not enough space for virtual machine.
How can i create env?
Can anyone help? Python was first installed directly, should I install anaconda?
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I solved the problem by downloading the anaconda promt, creating a new env from there and running the vscode from within the anaconda, when I type the python version, the version I set appears when I type it in normcal cmd, the version 3.10 appears.
If you wish to use different versions of python you can use tools such as asfd which will allow you to install as using different versions by switching in the terminal.
https://asdf-vm.com/guide/getting-started.html#_6-set-a-version
This question already has answers here:
Dealing with multiple Python versions and PIP?
(28 answers)
Closed 2 years ago.
I was trying to install biopython with pip, but I get an error saying Python 3.6 or later is required, but 2.7 was detected. Weirdly though, when I look for my python version, it indicates I have 3.8.5 installed.
Should I move directories somehow? I just upgraded my Catalina version and did a thorough cleanup on my mac. Maybe I accidentally moved a file or two?
here's what my terminal looks like
Thank you!!!!!
You have to deconflict pip and make sure you're using the right one. There's a good answer on another Stack Overflow question.
The bottom line is, you might try:
which -a pip
to see all pip installations in your path.
You can use a specific version of pip like this:
python3 -m pip install something
or, I think you can also do:
pip3.6 install something
This question already has answers here:
What is a virtualenv, and why should I use one?
(4 answers)
Closed 3 years ago.
In the huggingface github it is written:
You should install 🤗 Transformers in a virtual environment. If you're
unfamiliar with Python virtual environments, check out the user guide.
Create a virtual environment with the version of Python you're going
to use and activate it.
Now, if you want to use 🤗 Transformers, you can install it with pip.
If you'd like to play with the examples, you must install it from
source.
Why should it be installed in a virtual python environment?
What are the advantages of doing that rather than installing it on python as is?
Summing up the comments in a community answer:
It's not needed to install huggingface Transformers in a virtual environment, it can be installed just like any other package though there are advantages of using a virtual environment, and is considered a good practice.
You want to work in virtual envs for all Python work you do, so that you don't interfere the system install of Python, and so that you don't have a big global list of hundreds of packages that have nothing to do with each other and that may have conflicting requirements.
Apart from that, using a virtual environment for your project also means that it is easily deployable to a different machine, because all the dependencies are self-contained and can be packaged up in one go.
More in this answer
This question already has answers here:
Install a module using pip for specific python version
(17 answers)
Closed 5 years ago.
I am new to python. I have various versions of python installed in my Mac.
The pandas is installed in python 3.5. I want to use python 2.7. However when I do
import pandas
It says:
ImportError: No module named pandas
I tried pip install pandas but it is installing in python3.5
Can anyone suggest me how I can install modules for specific python
Tanya
I would suggest you to create a virtual environment and get started with the Python version you want to work on. Link to Documentation
You may also follow easy instructions for getting your choice of Python version on IPython Notebook as well. You may follow Step 1-4 in this documentation for virtual env and Python 2.7
This question already has answers here:
Problem Importing Pylab in Python 2.6
(2 answers)
Closed 7 years ago.
I have been trying to plot simple graphs in python 2.7 using matplotlib. I am using ubuntu and I have installed all the dependencies and matplotlib. Still when I try to run the code for plotting graphs, it gives me an error in terminal saying
I am new to python. What does this mean? and how do I resolve this?
I also use Ubuntu 14.04. It seems that the dependency has been messed up. The most easiest way is to install Anaconda as it handles all these sorts of issues quite well and very easy to install.
Here is the link for download Anaconda.
http://continuum.io/downloads
You could choose either python 2.7 or 3.4. (I personally prefer 3.4)
Just download that installer. I assume it's in /home/your_user_name/Downloads folder. Just open an terminal, type
$cd /home/your_user_name/Downloads
$ls
make sure you see your downloaded installer in this folder. Then
bash Anaconda-2.2.0-Linux-x86_64.sh
this could be different if you are using 32-bit Ubuntu OS.
After the installation, it asks you whether add the PATH to environment. Choose yes. Finally, open a terminal again
$conda update conda
$conda update anaconda
Now you are ready to go.