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Python Ratchadarin Cheat Sheet by

Include all the functions, vocabulary and other important concepts you have learned in Python so far.

Term­s/F­unc­tions or Defini­tion

Int (Integers)
A thing complete in itself
Variable
Something that can be change
Elif
Else/If
Float
Number including all the decimals
mynum%2
What is the remainder when dividing by 2
**
Square (the number)
==
Equal to...
!=
NOT equal to...
Decimals in Python...
Any decimal in python, it will get rid of all except for the 'floats' command
" "
Anything puts under the quotes, will turn into 'INTEGERS'
len
length (e.g. length of words)
str
String
String
text you want to display to someone, or "­exp­ort­" out of the program you are writing
List
Contains many words
Input
Allow the user to type in/input something
#
Comments only (it does not interfered or have any affect with the commands in the programs)

Area of Circle

 
"­"­"
Python Intro Assignment #2
name
student number
"­"­"

#Ask the user for a radius of a circle
user_r­adius = input(­"What is a radius of a circle­?")

#Convert the given radius to a floating point
radius = float(­use­r_r­adius)

#Make a variable called pi
pi = float(­3.1415)

#Calculate the area of the circle using exponents
area = pi(rad­ius*2)

#Display the area of the circle to the user
print ("The area of the circle is", area)
 

Volcabuary

String
A list of character such as number, letter and symbols ("Under quotes­"
Variable
Hold a value and can be change
Integer Number
Whole number (Can be positive or negative)
Floating Point
The number with decimals
Syntax
Gramma­r/S­tru­cture of Language
Modulo
Find the reminder
Boolean
True/False

Countdown Machine

 
user_n­umber = input(­"What number do you want to count down? ")
number = int(us­er_­number)
countd­own­_string = ' '

while number > 0:
countd­own­_number = countd­own­_string + str(nu­mber) + " "
number = number - 1
#print­(nu­mber)

print (count­dow­n_s­tring)

Covert Decimal to Binary

user_n­umber = '' while user_n­umber != '0' : user_n­umber = input(­"­Enter a number to convert to binary­") number = int(us­er_­number) binary­_string = '' while(­num­ber­>0) : remainder = number/2 binary­_string = str(re­mai­nder) + binary­_string number = number//2 print ("Binary string is", binary­_st­ring)

Multip­lic­ation and Exponents

string * number
Combine that string
string * string
Crash
number * number
Math - MULTIPLY
string ** string
Crash
number ** number
Math - EXPONENT
string ** number
Crash

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