ComfyUI Node: Evaluate Integers

Evaluate Integers:

The Evaluate Integers node is designed to evaluate mathematical expressions involving integer variables. This node allows you to input a custom Python expression and evaluate it using specified integer values for variables a, b, and c. The primary benefit of this node is its ability to dynamically compute results based on user-defined expressions, making it highly versatile for various computational tasks. The node leverages the simpleeval library to safely evaluate expressions, ensuring that the results are accurate and reliable. Additionally, it can print the evaluation process and results to the console for easy debugging and verification.

Evaluate Integers Input Parameters:

python_expression

This parameter allows you to input the mathematical expression you want to evaluate. The expression should be a string and can include the variables a, b, and c. The default value is `((a + b)

• c) / 2`, and it is not multiline.

print_to_console

This parameter determines whether the evaluation process and results should be printed to the console. It accepts two options: True or False. If set to True, the node will print the input values and the evaluation results in integer, float, and string formats. The default value is False.

a

This optional parameter represents the integer value for the variable a in the expression. It has a default value of 0 and can range from -48000 to 48000, with a step of 1.

b

This optional parameter represents the integer value for the variable b in the expression. It has a default value of 0 and can range from -48000 to 48000, with a step of 1.

c

This optional parameter represents the integer value for the variable c in the expression. It has a default value of 0 and can range from -48000 to 48000, with a step of 1.

Evaluate Integers Output Parameters:

INT

This output parameter provides the result of the evaluated expression as an integer. It is useful for scenarios where you need the result in a whole number format.

FLOAT

This output parameter provides the result of the evaluated expression as a float. It is useful for scenarios where you need the result in a decimal format.

STRING

This output parameter provides the result of the evaluated expression as a string. It is useful for scenarios where you need the result in a text format.

Evaluate Integers Usage Tips:

• Ensure that your python_expression is correctly formatted and uses the variables a, b, and c as intended.
• Use the print_to_console option set to True for debugging purposes to see the input values and the evaluation results in different formats.
• Adjust the values of a, b, and c to see how different inputs affect the result of your expression.

Evaluate Integers Common Errors and Solutions:

Invalid expression error

• Explanation: This error occurs if the python_expression contains invalid syntax or unsupported operations.
• Solution: Double-check the syntax of your expression and ensure it only includes supported operations and valid variable names.

Division by zero error

• Explanation: This error occurs if your expression involves division by zero.
• Solution: Ensure that the values of a, b, and c are set in such a way that division by zero does not occur in your expression.

Variable not defined error

• Explanation: This error occurs if the python_expression uses variables other than a, b, or c.
• Solution: Make sure your expression only uses the variables a, b, and c, which are defined and passed to the node.