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Overview

The Code node allows users to dynamically execute a Python code snippet within their workflows. The Python process will have access to all inputs and must output a single expression.

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Configuration Parameters

To set up the Code node, you need to configure the following parameter:

  • Python Code:

    The Python code you want to execute.

    This code will be executed in an isolated Jupyter Kernel environment as a single notebook cell.

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Expected Inputs and Outputs

  • Inputs:

    Any inputs to the Code node will be passed into the Python environment as the dictionary inputs, with the input node display IDs mapped to their respective outputs.

    Example:

    a = inputs["text-var-0 output"]

  • Outputs:

    The output will be evaluated as the last expression within the block. The output string will be automatically trimmed and handled to ensure clean results.

    Example:

    a = inputs["text-var-0 output"]

# The following string will be the output of the node
f'Output: {a}'

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Error Handling

Any exceptions thrown within the Python process will be thrown as a workflow error.

Consequently, you may also raise your own exceptions:

a = inputs["text-var-0 output"]

try:
  a = int(a)
except:
  raise Exception("Input is not a valid integer")

a * 2