Python

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Variables

Can represent numeric values, characters, character strings, or memory addresses.

What is sys.argv?

It allows you to input parameters from the command line.

%r

String (converts any Python object using repr())

boolean value

True or False

Syntax

the grammar, structure, or order of the elements in a language statement.

What does % when printing string

they allow the variables outside the string to enter into the string

String

can contain letters, numbers, and symbols

%r is used for...

debugging and display

%s is used for

display

==

equal to

**

exponent

What's the difference between = and == in Python? = is the assignment operator. == is the equality operator.

= is the assignment operator. == is the equality operator.

"

Double Quotes

modulo

%. Returns the remainder from a division.

modules

-aka libraries -feature sets you can import into a program

A for-loop is...

...

str()

...

%s

Converts String (converts any Python object using str())

%d

Converts a signed integer decimal

def

Defines a function def function1(): print "this is function 1"

#

Denotes a comment in a program.

input() function

How the player will enter text into the program through the keyboard

'

Single Quotes

Expression

In a programming language is a combination of explicit values, constants, variables, operators, and functions that are interpreted according to the particular rules of precedence and of association for a particular programming language, which computes and then produces another value

raw_input()

Raw input prompts the user for an input and then turns that input into a string. In between "(" and ")" the programmer writes the prompt that will prompt the user. When you set raw_input() equal to a variable, that variable becomes what the user inputs.

.py

The file extension that denotes a python file.

if

Used to determine, which statements are going to be executed

print()

Used to display a string on the screen. Takes the string you type in between the parentheses as input and displays the text on the screen.

What is the ' and " used for

What is put around strings

+

You can add one string to the end of another by using this operator.

A while-loop is...

an infinite loop. "while True" ~ "While true is true, run this:"

import

import other modules into a python script

integer vs. float

integer is a number w/out a decimal; float is a number with a decimal

<, <=, >, >=

less than, less than or equal to, greater than, greater than or equal to

^

matches the beginning of a string

$

matches the end of a string

!=

means doesn't equal

Function

mini program inside your computer

\n

moves whatever is after it to a new line

else

optional. Used after elif to catch other cases not provided for.

my_list.sort()

sorts a list from lowest to highest, or alphabetical

elif

stands for else if. if the first test evaluates to False, continues with the next one

\

tells Python not to end the string


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