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Cheatography

HacklnwMuids Cheat Sheet by

For computer class

Math

+
plus
-
minus
*
multiply
/
divide give decimal
==
equal to
!=
not equal to
<
less than
>
more than
<=
less than or equal to
>=
more than or equal to
%
to find remainder
**
power
//
divide give integer

Binary


user_number = input("Enter number to convert to binary : ")

number = int(user_number)

binary_string = ''
while (number > 0):
    remainder = number % 2
    binary_string = str(remainder) + str(binary_string)
    number = number // 2

print ("Binary string is",binary_string)

Radius pi

while True:
    user_radius = input("Please enter the radius of the circle")
    radius = float(user_radius)
    pi = 3.1415

    area = piradius*2

    print ("The area of the circle is", area)

==

myboolean = 2 == 3

if myboolean:
     print ("truth")
else:
     print ("lies")

0,01,0­12,­012­3,01234

mystring = ''"
count = 0
while count <= 4:
    mystring = mystring + str(count)
    print (mystring)
    count = count + 1

mystring = ""
for num in range(5):
    mystring = mystring + str(num)
    print (mystring)

1 * 1 = 1

def multiplicationTable(num):
    
    multi = 0
    while multi < 10:
        multi = multi + 1
        user_output = num*multi
        print ( num,"*",multi,"=",user_output)


user_num = int(input("Enter the number: "))
multiplicationTable(user_num)

Fibonacci

num1 = 0
num2 = 1
fibonacci = num1 + num2
output = "0,1"
while fibonacci < 50:
    output = output +","+ str(fibonacci)
    num1 = num2
    num2 = fibonacci
    fibonacci = num1 + num2
print (output)

Boolean

False or True
True
False and True
False
True and False
False
True and True
True
False or False
False
 

Multip­lic­ation and Exponent

string * number
Repeat that string by number
string * string
CRASH!
number * number
Multiply (Math)
string ** string
CRASH!
number ** number
Exponent (Math)
string ** number
CRASH!
String * Number
num = 1
stri = str(num)

print (stri * 3)
______­___­_____
#After running program
111

Hex

user_number = input("Enter number to convert to hex : ")

number = int(user_number)

hex_string = ''
while (number > 0):
    remainder = number % 16
    if remainder == 10:
        remainder = 'A'
    elif remainder == 11:
        remainder = 'B'
    elif remainder == 12:
        remainder = 'C'
    elif remainder == 13:
        remainder = 'D'
    elif remainder == 14:
        remainder = 'E'
    elif remainder == 15:
        remainder = 'F'

    hex_string = str(remainder) + str(hex_string)
    number = number // 16         
     
print ("Hex string is 0x",hex_string)

Math

print(2)#interger
print(2.5)#floationg point
print("this is a string")#string

myStr = "hello"

print (myStr)

print ("hello" , 1, 2)

print ("""
hello
yeah
.
.
.
.
""")

"""
This multi line comment #lol
"""

#variable name
#can have interger, lowercase/uppercase letters, underscores

#Mate operators
# + - / *
#exponents
#2 to the power of 3

print (2  2 2 )
print (2 ** 3)

#Modulo/Remainder
print (4%2) #remainder = 0
print (33%2) #remainder = 1

#convert to floating point
print (float(2))

#covert to a string
myint = 1
mystring = str(myint)
print (mystring * 3)

#true/false - Boolean

print (2 < 3)
 

Addition

string + string
Combin­ation of string
string + number
CRASH!
number + number
Add (Math)

Reverse

word = input("Please put a word :")
reverse = ""
letternum = 0

while letternum < len(word):
    reverse = (word[letternum]) + reverse
    letternum = letternum + 1

print ("Reverse: ",reverse)

for num in word:
    reverse = num + reverse

print ("Reverse: ",reverse)

Guess

import random
chance = 3
score = 0

mylist = ['Hack', 'ToeyD.', 'Patter','Tim','Lily']
random_item = random.choice(mylist)
while chance > 0:

    print (mylist)
    
    print ("Chances Remaining =",chance)
    guess = input("Guess a word from the above :")
    
    if guess == random_item:
        score = score + 100
        print ("That's correct!","The score is :",score)
        random_item = random.choice(mylist)
    else:
        print ("Sorry, wrong choice!")
        chance = chance - 1
    if guess in mylist:
        print ("")
    else:
        print ("Sorry,that is not even in the list!")
    if chance == 0:
        print ("Game Over! The word was",random_item)
        print ("Final score: ",score)

Even,Odd number

even = 0
odd = 0
while True:
    user_num = int(input("Enter the number :"))
    if user_num >= 0:
        if user_num % 2 == 0:
            even = even + 1
        else:
            odd = odd + 1
    else:
        print ("Even number :", even)
        print ("Odd number :", odd)
        break

Definition

def printDefinition(word):
    if word == "variable":
        print ("""
        A variable is the the thing that can be changed.
        """)
    elif word == "parameter":
        print ("""
        A parameter is the limiting factor
        """)
    elif word == "argument":
        print ("""
        An argument is the identifier that you give to function
        """)
    elif word == "string":
        print ("""
        A string is something that can be repeated by the number.
        """)
    elif word == "function call":
        print ("""
        A function call is the word you use to reuse the function.
        """)
    else:
        print ("unknown word")

while True:
    user_input = input("Please type the word :")
    printDefinition(user_input)
 

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