How to install Python packages in a specific environment?

python shell anaconda

11,338

When you are running python in the terminal, it is looking up your default path to your the python command. In this case, anaconda probably put a line in your shell profile specify the path to the anaconda version, which is why you are seeing it in the interpreter when you run python from either directory.

Secondly, you can set up a conda environment to download app specific dependencies without interfering with your default set up by

conda create --name myenv
source activate myenv
conda install packagename

This will install it in the myenv environment only. To deactivate the environment just run

source deactivate

Here is the documentation on that https://conda.io/docs/user-guide/tasks/manage-environments.html

11,338

Admin

Updated on June 04, 2022

Comments

Admin almost 2 years
I installed Anaconda3 so I can create environments and install different packages in each environment. But I fail to understand the difference between the Python in
```
/usr/bin/python
```
and
```
/opt/anaconda3/bin/python
```
I can seem to access Python 3.6.5 Anaconda from both, why is that? And, what is the difference between both?

Furthermore, I would like to install packages to a single Python environment only.
- anishtain4 almost 6 years
  
  just activate the environment, then pip install installs the packages only in that environment. Notice that you have to run spyder from the conda command line or it will automatically loads the root environment.
- Admin almost 6 years
  
  thanks ! what about the difference between /usr/bin/python and /opt/anaconda3/bin/python ? how are both of these connected
Admin almost 6 years

thank you! I managed to create the environment and install the package but I still cannot seem to get it to work. Check the updated version please
gymbrane almost 6 years

yeah, so once you have created an environment, you will need to activate it in your shell environment. In your shell, run source activate pythonoozie and then run conda install pandas from the shell.
Admin almost 6 years

yes I did that already, but it seems like I cannot point oozie to that python envirnment
gymbrane almost 6 years

i am just curious, when you run this command in the shell conda env list does it put the asterisk next to the envs/pythonoozie