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ExternalValue   

See Also
- ExternalEvaluate
- ExternalFunction
- StartExternalSession
- DeleteObject
- PersistentSymbol
- External Evaluation Systems
- Python
- NodeJS
- Julia
- Ruby
- R
- Shell
- Jupyter
- SQL
- SQL-JDBC
Related Guides
Workflows
- See Also
  - ExternalEvaluate
  - ExternalFunction
  - StartExternalSession
  - DeleteObject
  - PersistentSymbol
  - External Evaluation Systems
  - Python
  - NodeJS
  - Julia
  - Ruby
  - R
  - Shell
  - Jupyter
  - SQL
  - SQL-JDBC
- Related Guides
- Workflows

ExternalValue   

Listing of External Evaluators »

ExternalValue[sys,"sym"]

gives the value of "sym" in external evaluator sys.

ExternalValue[session,"sym"]

gives the value of "sym" in the specified external session.

Details

ExternalValue[session,"sym"] returns a Failure object if "sym" does not exist in session.
In ExternalValue[sys,…], possible choices for sys include:
"Python" Python

"NodeJS" JavaScript running through Node.js

"Julia" Julia

"Ruby" Ruby

"R" R

"Jupyter" Jupyter kernel

Examples

Basic Examples (1)

Start an external session:

Set an external value:

Get the external value:

End the external session:

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