Operator ReturnList

Toolkits > com.ibm.streamsx.topology.pysamples 1.1.0 > com.ibm.streamsx.topology.pysamples.positional > ReturnList

Demonstrate returning a list of values, each value is submitted as a tuple.

Python

@spl.map(style='position')
def ReturnList(a,b,c):
    "Demonstrate returning a list of values, each value is submitted as a tuple." 
    return [(a+1,b+1,c+1),(a+2,b+2,c+2),(a+3,b+3,c+3),(a+4,b+4,c+4)]

Summary

Ports

This operator has 1 input port and 1 output port.

Windowing

This operator does not accept any windowing configurations.

Parameters

This operator does not support parameters.

Metrics

This operator does not report any metrics.

Properties

Implementation

C++

Threading

Always - Operator always provides a single threaded execution context.

Input Ports

Ports (0)

Tuple attribute values are passed by position to the Python callable.

Properties

• Optional: false

• ControlPort: false
• TupleMutationAllowed: false
• WindowingMode: NonWindowed
• WindowPunctuationInputMode: Oblivious

Output Ports

Assignments

This operator does not allow assignments to output attributes.

Ports (0)

Properties

• Optional: false

• TupleMutationAllowed: true
• WindowPunctuationOutputMode: Preserving

Libraries

SPLPY header

Include Path: ../../opt/.splpy/include

Python libraries.

Command: ../../opt/.splpy/common/pyversion3.sh