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--- task_boiler [2023/05/21 02:01] – [conda environment file to install different packages from different channels] raju
+++ task_boiler [2024/01/23 22:55] (current) – raju
@@ Line 3: / Line 3: @@
 Start the first heading with "====="
-===== conda environment file to install different packages from different channels ====
-==== Background ====
-yfinance library is the easiest and fastest way to download historical stock prices. Asof 2023-05-20, it is not available in the defaults channel. But is available in the conda-forge channel.
-==== Task ====
-The goal here is to pull the yfinance package from conda-forge but everything else from the defaults channel.
-==== Solution ====
-<code>
- % cat env_test_yfinance.yml | stuff.py
-name: test_yfinance
-channels:
-  - defaults
-dependencies:
-  - python=3.11
-  - conda-forge::yfinance
-</code>
-where stuff.py is a python script to strip out the comments. It can be downloaded from https://github.com/KamarajuKusumanchi/rutils/blob/master/python3/stuff.py
-Create the environment
-<code>
- % conda env create -f ./env_test_yfinance.yml
-</code>
-==== Evidence ====
-yfinance is downloaded from conda-forge.
-<code>
- % conda list -n test_yfinance | grep conda-forge
-multitasking              0.0.9              pyhd8ed1ab_0    conda-forge
-yfinance                  0.2.18             pyhd8ed1ab_0    conda-forge
-</code>
-python is downloaded from the defaults channel
-<code>
- % conda list -n test_yfinance | grep "python"
-python                    3.11.3               h7a1cb2a_0
-python-dateutil           2.8.2              pyhd3eb1b0_0
-</code>
-==== See also ====
-  * The above environment file can be downloaded from https://github.com/KamarajuKusumanchi/rutils/blob/master/python3/envs/env_test_yfinance.yml
-  * I got the idea from https://stackoverflow.com/questions/58555389/set-the-channel-priority-in-conda-environment-yaml -> https://stackoverflow.com/a/65983247/6305733
-  * The official documentation I could find on this feature is https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#creating-an-environment-file-manually \\
-<Todo:- See if you can find a better link afterwards.>