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Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory \\METADATA

TL;DR: Problem: Long install path Solution 1: Install the desired python package (in my case tensorflow) in the folder which has a shorter path (for example C:/my_py_packages/some_package) Solution 2: Set the registry value HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem@LongPathsEnabled to 1 as mentioned here. Original answer: I got here by having this kind of error when I tried installing tensorflow … Read more

anaconda – graphviz – can’t import after installation

The graphviz conda package is no Python package. It simply puts the graphviz files into your virtual env’s Library/ directory. Look e.g. for dot.exe in the Library/bin/ directory. To install the graphviz Python package, you can use pip: conda install pip and pip install graphviz. Always prefer conda packages if they are available over pip … Read more

How do I update Anaconda?

root is the old (pre-conda 4.4) name for the main environment; after conda 4.4, it was renamed to be base. source What 95% of people actually want In most cases what you want to do when you say that you want to update Anaconda is to execute the command: conda update –all (But this should … Read more

Python – Activate conda env through shell script

The error message is rather helpful – it’s telling you that conda is not properly set up from within the subshell that your script is running in. To be able to use conda within a script, you will need to (as the error message says) run conda init bash (or whatever your shell is) first. … Read more

PackagesNotFoundError: The following packages are not available from current channels:

Try adding the conda-forge channel to your list of channels with this command: conda config –append channels conda-forge. It tells conda to also look on the conda-forge channel when you search for packages. You can then simply install the two packages with conda install slycot control. Channels are basically servers for people to host packages … Read more

Using multiple Python engines (32Bit/64bit and 2.7/3.5)

Make sure to set the right environmental variables (https://github.com/conda/conda/issues/1744) Create a new environment for 32bit Python 2.7: set CONDA_FORCE_32BIT=1 conda create -n py27_32 python=2.7 Activate it: set CONDA_FORCE_32BIT=1 activate py27_32 Deactivate it: deactivate py27_32 Create one for 64 bit Python 3.5: set CONDA_FORCE_32BIT= conda create -n py35_64 python=3.5 Activate it: set CONDA_FORCE_32BIT= activate py35_64 The … Read more

How to share conda environments across platforms

This answer is given with the assumption that you would like to make sure that the same versions of the packages that you generally care about are on different platforms and that you don’t care about the exact same versions of all packages in the entire dependency tree. If you are trying to install the … Read more

Cannot install Python 3.7 on osx-arm64

No native builds available Since Python 3.8 had been released for about a year when Apple Silicon hit the market, Python 3.7 builds for osx-arm64 were never part of the regular build matrix for Conda Forge. Workaround: Emulate Immediate alternatives for using 3.7 on Apple Silicon systems would be to emulate x86_64 with Rosetta or … Read more

How to set up conda-installed R for use with RStudio?

See https://anaconda.org/r/rstudio: $ conda install -c r rstudio Then from command line: $ rstudio (It is how I installed it and it works.)

How to use Jupyter notebooks in a conda environment?

Disclaimer: ATM tested only in Ubuntu and Windows (see comments to this answer). Jupyter runs the user’s code in a separate process called kernel. The kernel can be a different Python installation (in a different conda environment or virtualenv or Python 2 instead of Python 3) or even an interpreter for a different language (e.g. … Read more