CODEWITHSUNDEEP
pythonpipanacondaconda
Raj Stha
Raj Stha

Reputation: 1091

Conda - Get list of package starting with certain letter(s)

How can I get the list of package starting with certain character(s) in conda?

Upvotes: 3

Views: 2010

Answers (1)

merv
merv

Reputation: 77100

Conda List Command

The conda list command is sufficiently expressive to do this. Specifically, examining the usage signature for the command shows that it accepts a regex argument:

$ conda list -h
usage: conda list [-h] [-n ENVIRONMENT | -p PATH] [--json] [-v] [-q]
                  [--show-channel-urls] [-c] [-f] [--explicit] [--md5] [-e]
                  [-r] [--no-pip]
                  [regex]

List linked packages in a conda environment.

Options:

positional arguments:
  regex                 List only packages matching this regular expression.
...

Examples

Here are some examples using a regular expression to find packages starting with specific strings.

Packages starting with "sci"

$ conda list '^sci'
# packages in environment at /Users/merv/miniconda3/envs/anaconda_2020_11:
#
# Name                    Version                   Build  Channel
scikit-image              0.17.2           py38h81aa140_0  
scikit-learn              0.23.2           py38h959d312_0  
scipy                     1.5.2            py38h2515648_0

Packages starting with "num" or "sci"

$ conda list '^(sci|num)'
# packages in environment at /Users/merv/miniconda3/envs/anaconda_2020_11:
#
# Name                    Version                   Build  Channel
numba                     0.51.2           py38h6440ff4_1  
numexpr                   2.7.1            py38hce01a72_0  
numpy                     1.19.2           py38h456fd55_0  
numpy-base                1.19.2           py38hcfb5961_0  
numpydoc                  1.1.0              pyhd3eb1b0_1  
scikit-image              0.17.2           py38h81aa140_0  
scikit-learn              0.23.2           py38h959d312_0  
scipy                     1.5.2            py38h2515648_0

This should be preferred over using grep because it will preserve the header that conda list outputs.

Upvotes: 10

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