Week 3 and 4 Learning Summary

Week 3 and 4 subject 1: Functions

• A Function is a block of code with:

• A name,

• Zero or more parameters,

• Zero or more return values.

• Functions are useful for:

• Eliminating repetition, and

• Simplifying code, making it easier to read.

• The same number of parameters need to be provided when calling a Function, as the number of parameters in the definition of the function.

• You can specify default values of parameters in the definition.  When there are default values, less parameters can be provided when calling.

• Use the return statement to return values to the caller.  You can return multiple values:

• In the form of a tuple, i.e., multiple values separated by commas, or

• In a list.