My PLTW CSE Unit 2 Review - Python

To repeat a fixed number of times use a

• while loop
• for loop
• if loop
• indentation

To repeat until a particular condition is true use

• while loop
• for loop
• if loop
• indentation

The second part of if, that is executed when the condition is false

• if
• else
• for
• input

Data type that can only be true or false

• int
• string
• bool
• float

A variable that can hold a collection of values, often called an array in other programming languages

• list
• int
• string
• constant

The character that must be at the end of the line for if, while, for etc.

• :
• ;
• .
• ,

Decides if a string only contains numbers

• isalpha()
• isnumeric()
• int()
• string()

Tells the interpreter that the code which follows is a function

• const
• int
• def
• while

Converts a number to a string

• str()
• int()
• parseInt()
• convert

Python identifies blocks of code by

• BEGIN and END keywords
• { and }
• aligning up the starts of lines (indentation)
• guessing