PythonExpression

Import and Export support PythonExpression.
There is no associated file extension for PythonExpression. To execute ".py" files, use ExternalEvaluate.
Python must be installed and configured on your system as described in Configure Python for ExternalEvaluate.

Background & Context

- Code representation format for the Python programming language.
- PythonExpression supports Python numbers, strings, lists, Booleans and dictionaries.
- Plain text format.
- Python was first released as a programming language in 1991.

	Import, Export	import from or export to a file
	CloudImport, CloudExport	import from or export to a cloud object
	ImportString, ExportString	import from or export to a string
	ImportByteArray, ExportByteArray	import from or export to a byte array

	"Elements"	list of elements and options available in this file
	"Rules"	full list of rules for each element and option
	"Options"	list of rules for options, properties and settings

tuple	List	an ordered sequence of values
dictionary	Association	an association of keys and values
int	Integer	arbitrary-sized integer
long	Integer	arbitrary-sized integer
float	Real	real-valued number
complex	Complex	a complex number
list	List	a sequence of values
boolean	True\|False	Boolean values
string	String	a sequence of character values
None	Null	null value

open allclose all

Import a simple string:

Import a list:

Export to a string:

Import a dictionary as a Wolfram Language list:

Export an Association as a Python dictionary:

Import the result of evaluating external code in Python:

Confirm it is the same as using the "ReturnType" of "Expression":

"PythonExpression" internally starts and stops a Python session every time ImportString is called, which takes a substantial amount of time:

When performance is a concern, manually manage a Python session using ExternalEvaluate:

Top