Pass Data Between MATLAB and Python

Pass Data from MATLAB to Python

When MATLAB^® functions return output arguments, MATLAB converts the data into equivalent Python^® data types.

MATLAB Output Argument Type (scalar unless otherwise noted)	Resulting Python Data Type
Numeric array	matlab numeric array object (see matlab Python Module)
double, single	float
Complex (any numeric type)	complex
int8, uint8, int16, uint16, int32	int
uint32, int64, uint64	int
NaN	float ('nan')
Inf	float ('inf')
logical	bool
char array (1-by-N, N-by-1) char array (M-by-N)	str Not supported
structure	dict
Row or column cell array	list
M-by-N cell array	Not supported
MATLAB handle object (such as the containers.Map type)	matlab.object MATLAB returns a reference to a matlab.object, not the object itself. You cannot pass a matlab.object between MATLAB sessions.
MATLAB value object (such as the categorical type)	Opaque object. You can pass a value object to a MATLAB function, but you cannot create or modify it.
Other object (for example, Java® object)	Not supported
Function handle	Not supported
Sparse array	Not supported
String array	Not supported
Structure array	Not supported

Pass Data from Python to MATLAB

When you pass data as input arguments to MATLAB functions from Python, MATLAB converts the data into equivalent MATLAB data types.

Python Input Argument Type	Resulting MATLAB Data Type (scalar unless otherwise noted)
matlab numeric array object (see matlab Python Module)	Numeric array
float	double
complex	Complex double
int	int32(Windows®) int64(Linux® and Mac)
float('nan')	NaN
float('inf')	Inf
bool	logical
str	char
bytearray	uint8 array
bytes	uint8 array
dict	Structure if all keys are strings. Not supported otherwise
list	Cell array
set	Cell array
tuple	Cell array
memoryview	Not supported
range	Cell array
None	Not supported
module.type	Not supported

Related Topics

• matlab Python Module
• Use MATLAB Arrays in Python