The essential Python function definition is built with the
def statement. We provide a name, the names of the parameters, and an indented suite of statements that is the body of the function. The
return statement provides the range of values.
The syntax looks like this:
def prod(sequence): p= 1 for item in sequence:p *= item return p
We've defined a name,
prod, and provided a list of only one parameter,
sequence. The body of the function includes three statements: assignment,
return. The expression in the
return statement provides the resulting value.
This fits the mathematical idea of a function reasonably well. The domain of values is any numeric sequence, the range will be a value of the a ...