python cheat sheet

reverse = ""
letter_num = 0

word = input('type in a word: ')

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

if reverse == word:
       print ('it is palindrome')
else:
       print ('it is not palindrome')

def max2(num1,num2):
    maxvalue = num1
    if num2 > maxvalue:
        maxvalue = num2
  
    return maxvalue


print (max2(4,5))
print (max2(33,5))


def max3(num1,num2,num3):
    
    maxvalue = num1

    if num2 > maxvalue:
        maxvalue = num2
    if num3 > maxvalue:
        maxvalue = num3
    
    return maxvalue
print (max3(1,2,3))

def printDefinitions():

 if word == "variable":

    print("""variable is value that you can change""")

 elif word == "function"

    print("""function is is define a box of code""")

 elif word == "parameter"

    print("""parameter is a valuve of number that you give to the function""")

 elif word == "argument"

    print("""argument is set of somethings that you give to the function""")

 elif word == "function call"

    print("""function call is when you call the function and it will run""")

 elif word == "string"

    print("""string is anything you can put""")

 else:
     print("unknown word")

 return

while True:
    user_input = input("Enter word:")
    printDefinition(user_input)

def maxlist(list):
    maxvalue = list[0]

    for item in list:
        if item > maxvalue:
            maxvalue = item

    return maxvalue
mylist = [1,2,3,4,55,66,777,0,1]
print(maxlist(mylist))

#Recieves input from the user, converts it to an integer and prints the product of the integer
user_number = int(input("Enter a number"))
print(user_number*5)


#prints all the even numbers from -100 to -1 using while loop
user_number = -100
while user_number< -1:
    print(user_number)
    user_number = user_number +2


#print all the item using a loop
mylist = ['cokezero', 'bacon', 'pesi']
for item in mylist:
    print(item)


#areaOfEllipse()
def areaOdEllipse(radius1, radius2):
    pi = 3.145
    area = pi * radius1 * radius2
    return area
#function call
area1 = areaOfEllipse(2,3)
print(area1)


#The user enters a negative interger, exit the loop and print how many of the num enter were even and odd
evencount = 0
oddcount = 0
While True:
    num = int(input("Enter a positive integer"))
    if num < 0:
        print("Enter numbers:", evenCount)
        print("Odd numbers:", oddCount)
        break
    else:
        if(num % 2) == 0
            evenCount = evencount + 1
        else:
            oddCount = oddCount + 1
    

import random

intlist = [5,10,15,20,25]
random_int = random.choice(intlist)
print (random_int)

fplist = [1.1,2.2,3.3,4.4,5.5]
random_fp = random.choice(fplist)
print (random_fp)

strlist = ['rat','cat','fat','mat','sat']
random_str = random.choice(strlist)
print (random_str)

mylist = ['blue', 'green', 'yellow', 'red', 'pink']
random_item = random.choice(mylist)
print(random_item)

myvarl = 1
myvar2 = 2
myvar3 = 3
varlist = [myvar1, myvar2, myvar3]
random_var = random.choice(varlist)
print (varlist, random_var)

def areaofcircle(r):

     if r <= 0:
         return"Error: invalid radius'
        
    pi = 3.1415

    area = pi * r ** 2

    return area #return the area of the circle

user_radius = float (input("Enter the radius: "))

print('The area of the circle is', areaofcircle(user_radius))

def areaofcircle(radius):
    if radius <= 0:
        return "Error: invalid raadius"

    pi = 3.1415
    area = pi (radius*2)
    return area

user_radius = float(input("Enter the radius: "))

print('The area of the circle is', areaofcircle(user_radius))

Enter the radius: 2
The area of the circle is 12.566

Enter the radius: 0
The area of the circle is Error: invalid raadius