Constants in CLIPS

Based on the instructions provided, the target language is Python. Below is the translation of the Go code example provided in the input into Python, along with an explanation in Markdown format suitable for Hugo.

Constants#

Python supports constants of string, boolean, and numeric values by convention. Although Python does not have a built-in constant enforcement, we typically use uppercase variable names to indicate they should not change.

import math

# Declaring a constant value
S = "constant"

def main():
    print(S)

    # A constant can appear anywhere a variable statement can.
    N = 500000000

    # Constant expressions perform arithmetic with arbitrary precision.
    D = 3e20 / N
    print(D)

    # A numeric constant has no type until it’s given one.
    print(int(D))

    # A number can be given a type by using it in a context that requires one.
    # For example, here math.sin expects a float.
    print(math.sin(N))

if __name__ == "__main__":
    main()

To run the program, save the code in a file named constant.py and use the Python interpreter.

$ python constant.py
constant
6e+11
600000000000
-0.28470407323754404

In Python, uppercase variable names are used to indicate that a variable should be treated as a constant. Though it does not enforce these as true constants, it helps in understanding the code and maintaining consistency across the codebase.