I have a problem with the management of my environnements on Anaconda. I want to have three environnements, a "classic", another with ortools and a last with django. However, ortools can't be installed by using "conda install ortools", then i have to use pip. My problem is that when i use "pip install --user ortools" in the right environnement it install this package for all my environnements which have the same version of python than the right environnement. How could I fix this ?
Thanks !
#lucidbrot is correct in their comment. You should not use the --user argument in pip, because that will install into your $HOME directory, which every environment can access.
Here is a series of commands you can use to set up multiple environments, one with ortools
conda create --name ortools-env python=3
conda activate ortools-env
python -m pip install --no-cache-dir ortools
python -c "import ortools" # No error.
conda create --name django-env python=3 django
conda activate django-env
python -c "import ortools" # Error: module not found
For reference, the above code uses conda version 4.8.2
Related
I am using conda as the Python3 package management tool, sometimes the conda repo did not contains some Python package. So I have to install it using pip, first I found the anaconda environment folder, the next step switch to the anaconda environment folder:
cd /usr/local/anaconda3/envs/pydolphin
then using this command to install package:
./bin/pip install musicbrainzngs
is there any short way to do this? is it possible to install it the PyCharm IDE the simple way? the PyCharm IDE using conda install by default.
First activate your conda environment:
conda activate <env>
This will switch to the version of pip installed in this environment. Then you can install using pip as per normal which will install it into your conda environment:
pip install musicbrainzngs
I was trying to install pycryptodome, python-jose-cryptodome using pip within anaocnda3 environment.
I got this error:
ERROR: Failed building wheel for pycryptodome
I have tried many versions many solutions(latest versions, specified version, with python 3.8 or 3.7, using requirements text without cache and even alone installation) but nothing worked for me :(. Any solution?
While using pip in an anaconda environment is allowed and fine, issues may arise when using pip and conda together, this was clearly mentioned in the conda docs.
One of the best practices when installing packages in an anaconda environment is to use conda for search and install before using pip.
So instead of directly using pip, try to :
Search for pycryptodome in anaconda packages repo
conda search pycryptodome
pycryptodome is available in anaconda repo .
The next step is to install pycryptodome :
conda install -c anaconda pycryptodome
or if you want to use conda-foge channel :
conda install -c conda-forge pycryptodome
this should get pycryptodome installed into your env
To use a requirements.txt file with conda :
conda install --yes --file requirements.txt
Summary : Best Practices Checklist When Using Pip in a Conda Environment
Use pip only after conda
install as many requirements as possible with conda, then use pip
pip should be run with –upgrade-strategy only-if-needed (the default)
Do not use pip with the –user argument, avoid all “users” installs
Use conda environments for isolation
create a conda environment to isolate any changes pip makes
environments take up little space thanks to hard links
care should be taken to avoid running pip in the “root” environment
Recreate the environment if changes are needed
once pip has been used conda will be unaware of the changes
to install additional conda packages it is best to recreate the
environment
Store conda and pip requirements in text files
package requirements can be passed to conda via the –file argument
pip accepts a list of Python packages with -r or –requirements
conda env will export or create environments based on a file with
conda and pip requirements .
you can read more about this topic here on anaconda website, and on conda docs
I have installed the pygal package through the following command line:
conda install -c akode pygal
However, when I search this package in the Anaconda, I can only find this package in the base (root) environment. When I try to search this pygal package in my newly created environment, nothing can I find.
Why does this happen? and is there any solution to this problem?
When you are not in an environment and run conda install , it will install it in the base. If you activate your environment then install the package using conda install, it will apply to your environment.
source activate data_visualization_coursera
conda install -c akode pygal
Or you can install a specific package to an environment using this command
conda install -n <environment_name> <package_name>
You can find all of the documentation here https://conda.io/docs/user-guide/tasks/manage-environments.html
I am using Jupyter Notebook to install packages with the command: !pip install.
I just used this command to install the Options package, but it's still not showing up. I checked the default python Environment as well as the conda environment.
list of Python environments
To install packages into jupyter notebook you have to use conda instead of pip. Just find the conda install instruction for the package you are trying to install.
For example, the command to install numpy on conda is:
conda install -c anaconda numpy
instead of the regular pip version which would've been:
pip install numpy
You can search for yours by googling: conda install <package-name-you-want-to-install>.
I know that pip3 refers to python3 and pip refers to python2.
When I use anaconda environment and set the python version as 3.5, I install a package names itchat as following.
pip3 install itchat
The installation goes on successfully without any errors.
But when I type the following commands, strange things happen.
But if I just use pip install itchat and type python instead of python3, things go on as I think.
I am wondering what leads to this result.
Why there is the difference between python and python3?
Thanks for providing your answers!
I don't see you using conda environment.
Create an environment
conda create -n myenv
activate the envinronment:
conda activate myenv
and then install the package
conda install itchat
or
pip install itchat