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
defkeyword 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
forloop 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
range - The
rangefunction 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,end,step)it returns all the numbers from start to one less than end changing by step. For example,
while - A
whileloop 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.
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