Chapter 8 - Summary¶

Chapter 8 included the following concepts from computing.

Body of a Loop - The body of a loop is a statement or set of statements to be repeated in a loop. The body of a loop is indicated in Python with indention.
Counter - A counter is a variable that is used to count something in a program.
Increment - Increment means to increase the value of a variable by 1.
Infinite Loop - An infinite loop is one that never ends.
Logical Expression - An logical expression is either true or false. An example of a logical expression is x < 3.

Summary of Python Keywords and Functions¶

def - The def keyword is used to define a procedure or function in Python. The line must also end with a : and the body of the procedure or function must be indented 4 spaces.
for - A for loop is a programming statement that tells the computer to repeat a statement or a set of statements. It is one type of loop.
print - The print statement in Python will print the value of the items passed to it.
range - The range function in Python returns a list of consecutive values. If the range function is passed one value it returns a list with the numbers from 0 up to and not including the passed number. For example, range(5) returns a list of [0, 1, 2, 3, 4]. If the range function is passed two numbers separated by a comma it returns a list including the first number and then up to but not including the second number. For example, range(1, 4) returns the list [1, 2, 3]. If it is passed three values range(start, stop, step) it returns all the numbers from start to one less than stop changing by step. For example, range(0, 10, 2) returns [0, 2, 4, 6, 8].
while - A while loop is a programming statement that tells the computer to repeat a statement or a set of statements. It repeats the body of the loop while a logical expression is true.