Installing Python Libraries in Matlab Online

Hi,

Matlab recently added the support of calling python functions from Matlab and the server hosting Matlab online also has python2.7 installed (checked by runnning 'pyenv').

However i am not sure how to install packages like 'numpy' (as an import gives an error).

Without packages like numpy this feature isnt very useful (for the online version, i can still use the offline)

Answer 1

[Deepak Meena]

Hi Anirudh ,

As you have correctly mentioned Mathworks recently added the support of calling python functions from Matab. Refer to the following documentation of Python libraries in matlab

https://www.mathworks.com/help/matlab/call-python-libraries.html

https://www.mathworks.com/help/matlab/matlab_external/differences-between-matlab-python.html

Now talking about libraries such as numpy which doesn't come up directly with python version and required separate installation won't work in MATALB online. But if you have numpy installed on your end and have matlab software as well ,then you can import those libraries, refer to this answer : https://www.mathworks.com/matlabcentral/answers/427187-problem-with-python-numpy.

So I suggest you to use MATLAB software if you want to use those specific libraries.

Thanks,

Deepak

Answer 2

[Yann Debray]

As of last week, you can simply run pip inside of MATLAB Online. It is pre-installed in every session.

!pip --version

pip 24.0 from /usr/lib/python3/dist-packages/pip (python 3.10)

!pip --help

Usage:   
  pip <command> [options]

Commands:
  install                     Install packages.
  download                    Download packages.
  uninstall                   Uninstall packages.
  freeze                      Output installed packages in requirements format.
  inspect                     Inspect the python environment.
  list                        List installed packages.
  show                        Show information about installed packages.
  check                       Verify installed packages have compatible dependencies.
  config                      Manage local and global configuration.
  search                      Search PyPI for packages.
  cache                       Inspect and manage pip's wheel cache.
  index                       Inspect information available from package indexes.
  wheel                       Build wheels from your requirements.
  hash                        Compute hashes of package archives.
  completion                  A helper command used for command completion.
  debug                       Show information useful for debugging.
  help                        Show help for commands.

General Options:
  -h, --help
  Show help.
  --debug
  Let
  unhandled
  exceptions
  propagate
  outside the
  main
  subroutine,
  instead of
  logging
  them to
  stderr.
  --isolated
  Run pip in
  an isolated
  mode,
  ignoring
  environment
  variables
  and user co
  nfiguration
  .
  --require-virtualenv
  Allow pip
  to only run
  in a
  virtual env
  ironment;
  exit with
  an error
  otherwise.
  --python <python>
  Run pip
  with the
  specified
  Python inte
  rpreter.
  -v, --verbose
  Give more
  output.
  Option is
  additive,
  and can be
  used up to
  3 times.
  -V, --version
  Show
  version and
  exit.
  -q, --quiet
  Give less
  output.
  Option is
  additive,
  and can be
  used up to
  3 times (co
  rresponding
  to WARNING,
  ERROR, and
  CRITICAL
  logging
  levels).
  --log <path>
  Path to a
  verbose
  appending
  log.
  --no-input
  Disable
  prompting
  for input.
  --keyring-provider <keyring_provider>
  Enable the
  credential
  lookup via
  the keyring
  library if
  user input
  is allowed.
  Specify
  which
  mechanism
  to use
  [disabled,
  import, sub
  process].
  (default:
  disabled)
  --proxy <proxy>
  Specify a
  proxy in
  the form sc
  heme://[use
  r:passwd@]p
  roxy.server
  :port.
  --retries <retries>
  Maximum
  number of
  retries
  each
  connection
  should
  attempt
  (default 5
  times).
  --timeout <sec>
  Set the
  socket
  timeout
  (default 15
  seconds).
  --exists-action <action>
  Default
  action when
  a path
  already
  exists:
  (s)witch,
  (i)gnore,
  (w)ipe,
  (b)ackup,
  (a)bort.
  --trusted-host <hostname>
  Mark this
  host or
  host:port
  pair as
  trusted,
  even though
  it does not
  have valid
  or any
  HTTPS.
  --cert <path>
  Path to
  PEM-encoded
  CA
  certificate
  bundle. If
  provided,
  overrides
  the
  default.
  See 'SSL
  Certificate
  Verificatio
  n' in pip d
  ocumentatio
  n for more 
  information
  .
  --client-cert <path>
  Path to SSL
  client cert
  ificate, a
  single file
  containing
  the private
  key and the
  certificate
  in PEM
  format.
  --cache-dir <dir>
  Store the
  cache data
  in <dir>.
  --no-cache-dir
  Disable the
  cache.
  --disable-pip-version-check
  Don't perio
  dically
  check PyPI
  to
  determine
  whether a
  new version
  of pip is
  available
  for
  download.
  Implied
  with --no-
  index.
  --no-color
  Suppress
  colored
  output.
  --no-python-version-warning
  Silence
  deprecation
  warnings
  for
  upcoming
  unsupported
  Pythons.
  --use-feature <feature>
  Enable new 
  functionali
  ty, that
  may be
  backward in
  compatible.
  --use-deprecated <feature>
  Enable
  deprecated 
  functionali
  ty, that
  will be
  removed in
  the future.

!pip install numpy

Collecting numpy
  Downloading numpy-2.1.3-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (62 kB)
Downloading numpy-2.1.3-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (16.3 MB)
Installing collected packages: numpy
Successfully installed numpy-2.1.3