Constants are usually evident from ALL_CAPS names, and near the top of modules, however, it is not clear to me how one defines a constant. Is a constant:
A) A reference to a value which is not intended to be changed throughout the life of the software (e.g.
PI=3.1416
)B) A reference to a value which is expected to be changed throughout the life of the software (e.g.
CUSTOMER_FILE=r'\data\customer_info.csv'
)C) Both?