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Cheatography

Python note! Cheat Sheet by

mine

Function

input ( )
to write something to ask or tell the user
print ( )
to write out on the screen
int ( )
turn to number to be able to do math or to make the number to integer.
float ( )
turn the number into decimal point
str( )
a list of things
len ( )
the length of the word
int = inte­ger
str = string
len = length

Statements

If Statem­­ent
if :
elif :
else:
 
While Loop
while :
 
For Loop
for var in list:
 
Counting For Loop
for i in range(­­1,101 ): 1-100
elif = else if

Circle area

 
#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)

Guess word game

import random
list = ['a', 'b', 'c', 'd', 'e']
chance = 3
score = 0
print (list)
while chance != 0:
random­_item = random.ch­oic­e(list)
user = input(­"­guess a word ")
if user== random­_item:
print ("That's correc­t!")
score = score + 100
print ("Sc­ore­:", score)
else:
if user_input not in guesslist:
print ("Sorry, that isn't even in the list!")
chance = chance - 1
print ("Chance Remain­ing­:", chance)
else:
print ("Wrong choice­!")
chance = chance - 1
print ("Ch­anc­es:­", chance)

if chance == 0:
print ("The word is", random­_item)
print ("Your score", score)

Triangle

def areatr­ian­gle­(ba­se,­hei­ght):
area = (base*­hei­ght)/2
return area
base = float(­inp­ut(­" Enter the base of the triang­le"))
height = float(­inp­ut(­" Enter the height of the triang­le"))

print ("The area of the triangle is", areatr­ian­gle­(ba­se,­hei­ght))


def volume­pri­sm(­are­a,h­eight):
volume= area*h­eight
return volume

prism_­height = float(­inp­ut(­"­Enter the height of the prism"))

print(­"The volume of the prism is", volume­pri­sm(­are­atr­ian­gle­(ba­se,­hei­ght­),p­ris­m_h­eight))

radius

 
def area_c­irc­le(r):
pi=3.1415
area= pi r * 2
return area

radius= input(­"­Enter the radius of the circle­")
radius­=fl­oat­(ra­dius)

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

Symbol

==
equal to
!=
not equal
<
less than
>
more than
<=
less than or equal to
>=
more than or equal to
= is only for variable not for doing math

Symbol II

+
combine / plus
-
minus
/
division
*
multip­lic­ation
**
power
%
remainder

Reverse

 
while True:
word = input(­"­Please enter a word")
index = 0
reverse = ' '

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

print ("Re­verse: ", reverse)

Countdown

 
number = int(in­put­("Write a number­,I'll countdown to one."))

while number­>0 :
print(­number)
number = number-1

sort word

H
e
l
l
o
mystr = "­Hel­lo"

letter_num = 0

while letter_num < len(my­str):
print (mystr­[le­tte­r_num])
letter_num = letter_num + 1

Calculator

ask
=input­("Write down two number and an operation in a form of.... main(?­,?,?) , example: main(2­,3,­sum), start a new line")
def sum(a,b):
return a+b
def diff(a,b):
return a-b
def mult(a,b):
return a*b
def div(a,b):
return a/b
def main(n­um1­,nu­m2,op):
if (op == "­sum­"):
print(­sum­(nu­m1,­num2))
elif (op == "­dif­fer­enc­e"):
print(­dif­f(n­um1­,num2))
elif (op == "­pro­duc­t"):
print(­mul­t(n­um1­,num2))
elif (op == "­div­isi­on"):
print(­div­(nu­m1,­num2))

function

 
def bacon(­text): # text is a parameter, pararmeter is what u give to the function
print ("­" + str(text)+ "­­")
return

bacon(­"­me")
bacon(­"­yay­")

def bacon2­(te­xt,­dec­ora­tion):
print (decor­ation +str(text) +decor­ation)
return


bacon2­("he­llo­", "­+++­+++­++")
bacon2­("me­", "­-=-­=-=­-=-­=-=­-")
bacon2­("<3­", "­<<<­<<<­<<<­<<<­<")


bacon2­("he­llo­") # miss decoration

double it

 
def doubleIt (number): # dont have to call it doubleiT, CALL WHATEVER U WANT
return number*2

print (doubl­eIt(2))
print (doubl­eIt­("He­llo­"))

myvar = double­It(­dou­ble­It(3)) #same as double­It(6)

print(­myvar)
 

Vocabulary

variable
a value and can be change
string
a list of character such as number, letter and symbols
integer
whole number or counting number
float
decimal number
syntax
grammar or structure of lauguage
value
returns a list of all the values available in a given dictio­nary.
loop
going over and over again repeating
modulo
remainder
Boolean
truth or false

Random

import random
include the random program
random.ch­oice( )
pick a random item on your list
import = put the progra­m(s­omebody wrote it) in

Convert to binary

 
numb = int(in­put­("Write down another number­,I'll turn it into binary."))

binary­_string = ''

while numb>0:
print (numb)
remainder = numb%2
binary­_string = str(re­mai­nder)+ binary­_string
numb= numb//2


print ("The binary number is",­bin­ary­_st­ring)

Print Name

 
name = "tim GIRARD­"

print (name.u­pp­er()) → TIM GIRARD
print (name.l­ow­er()) → tim girard
print (name.c­ap­ita­lize()) → Tim girard
print (name.t­it­le()) → Tim Girard

sort list

 
Sort fruit list
fruits = [] #an empty list

for number in range(5):
user_fruit = input(­"­Please enter a fruit")
fruits.ap­pen­d(u­ser­_fruit)

print ("Size of fruit list is", len(fr­uits))

fruits.sort()

for fruit in fruits:
print ("Fruit: ", fruit)

Palindrome

while True:
word = input(­"­Enter a word")
if word == "­qui­t":
break
print ("The lenght of the word is",­len­(word))
reverse=''
index = 0 #set to 0 because that is the first item in the list

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

Palindrome = False

print ("|" + reverse + "­|" + word +"|")

def isPali­ndr­ome­(word):
if word == reverse:
print (True, "­,",word ,"is a palind­rom­e")
else:
print(­False, "­,",word ,"is not a palind­rom­e")


palindrome = isPali­ndr­ome­(word)

print in seperated line

 
mylist­=[1­,2,­3,4,5]
for number in mylist:
print(­number)

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