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FindExternalEvaluators[]

finds installed external evaluators that can be used with ExternalEvaluate, returning a dataset of the results found.

FindExternalEvaluators["sys"]

finds only external evaluators for language or system sys.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
See Also
Related Guides
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FindExternalEvaluators   

Listing of External Evaluators »
FindExternalEvaluators has been superseded by ExternalEvaluators since Version 14.3.

FindExternalEvaluators[]

finds installed external evaluators that can be used with ExternalEvaluate, returning a dataset of the results found.

FindExternalEvaluators["sys"]

finds only external evaluators for language or system sys.

Details and Options

  • FindExternalEvaluators searches standard paths, including Environment["PATH"], for evaluator system installations.
  • In FindExternalEvaluators[sys], possible choices of sys include:
  • "Python"Python
    "NodeJS"JavaScript running through Node.js
    "Julia"Julia
    "Ruby"Ruby
    "R"R
    "Shell"Bash, Sh, Zsh, ...
    "Jupyter"Jupyter kernel
    "SQL"SQL database
    "SQL-JDBC"SQL database using JDBC
  • In the dataset returned by FindExternalEvaluators, possible values for the "Registered" key include:
  • Truethe evaluator has been explicitly registered
    Falsethe evaluator has not been explicitly registered
  • Evaluator systems can be explicitly registered with RegisterExternalEvaluator and unregistered with UnregisterExternalEvaluator.

Examples

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Basic Examples  (2)

List all external evaluators on the system:

List only evaluators for a specific system:

Scope  (2)

Registering an evaluator with RegisterExternalEvaluator makes the "Registered" key True:

Unregistering an evaluator with UnregisterExternalEvaluator makes the "Registered" key False:

Register the evaluator again:

Wolfram Research (2017), FindExternalEvaluators, Wolfram Language function, https://reference.wolfram.com/language/ref/FindExternalEvaluators.html (updated 2020).

Text

Wolfram Research (2017), FindExternalEvaluators, Wolfram Language function, https://reference.wolfram.com/language/ref/FindExternalEvaluators.html (updated 2020).

CMS

Wolfram Language. 2017. "FindExternalEvaluators." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2020. https://reference.wolfram.com/language/ref/FindExternalEvaluators.html.

APA

Wolfram Language. (2017). FindExternalEvaluators. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/FindExternalEvaluators.html

BibTeX

@misc{reference.wolfram_2025_findexternalevaluators, author="Wolfram Research", title="{FindExternalEvaluators}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/FindExternalEvaluators.html}", note=[Accessed: 13-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_findexternalevaluators, organization={Wolfram Research}, title={FindExternalEvaluators}, year={2020}, url={https://reference.wolfram.com/language/ref/FindExternalEvaluators.html}, note=[Accessed: 13-August-2025]}