my Cheat Sheet

user_number = input("please enter a number: ")
number = int(user_number)
hex_string = ' '
while (number > 0):
    remaider = number % 16
    if remaider == 10:
        remaider = 'A'
    elif remaider == 11:
            remaider = 'B'
    elif remaider == 12:
            remaider = 'C'
    elif remaider == 13:
            remaider = 'D'
    elif remaider == 14:
            remaider = 'E'
    elif remaider == 15:
            remaider = 'F'
                            
    hex_string = str(remaider) + str(hex_string)
    number = number // 16
print ("Hexadecimal string is 0x", hex_string)

user_number = input("Please enter a number: ")

number = int(user_number)

countdown_string = ''

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

while True:
    user_radius = input("What is your radius of a circle? ")
    radius = float(user_radius)
    pi = float(3.1415)
    area = (pi) \* (radius) \*\* 2
    print("The area of the circle", area)

def areaoftriangle(b,h):
    area = 0.5*b*h
    return area
user_base = float(input("enter the base of the triangle: "))
user_height = float(input("enter the height of the triangle: "))
print ('the area of trianglr is', areaoftriangle,(user_base, user_height))
def volumeofprism(b,h,l):
    volume = areaoftriangle(b,h)*l
    return volume
user_lenght = float(input('lenght of prism: '))
print('the volume of prism is', volumeofprism(user_base,user_height,user_lenght))

print (name.upper())     all capital
print (name.lower())     all not capital
print (name.capitalize())     first letter capital
print (name.title())     every first letter of every word capital

word = input("Type in an word: ")
reverse = ""
for letter in word:
    reverse = letter + reverse
print ("Reverse: ", reverse)

import random
intlist = [1, 2, 3, 4, 5, 6, 7, 8, 9]
random_int = random.choice(intlist)
print (intlist, random_int)
fplist = [1.3112354, 2.5145496, 3.857498, 4.65454564, 5.7418523, 6.321956, 7]
random_fp = random.choice(fplist)
print (fplist, random_fp)
strlist = ["a", "s", "d", "f", "g", "h"]
random_item = random.choice(strlist)
print (strlist, random_item)
myvar1 = 1
myvar2 = 2
myvar3 = 3
varlist = [myvar1, myvar2, myvar3]
random_var = random.choice(varlist)
print (varlist, random_var)

def printdefinition(word):
    if word=="variable":
        print("""a variable is value that can change""")
    elif word=="function":
        print("""a function is define box of code that can be reuse""")
    elif word=="parameter":
        print("""a parameter is value given to function""")
    elif word=="argument":
        print("""a argument is value given to function""")
    elif word=="function call":
        print("""a function call is use the function code""")
    elif word=="string":
        print("""a string is list of character""")
    else:
        print("""unknown""")
    return
while True:
    user_input = input("enter word ")
    printdefinition(user_input)

def max2(num1, num2):

    if num1 < num2:
        maxvalue = num2
    else:
        maxvalue = num1
    return maxvalue
print(max2(4,5))
print(max2(6,5))



def max3(num1,num2,num3):
    maxvalue = num1
    if num2 > maxvalue:
        maxvalue = num2
    if num3 > maxvalue:
        maxvalue = num3
    return maxvalue
print(max3(1,2,3))
print(max3(1,4,3))
print(max3(5,2,3))



def maxlist(list):
    maxvalue = list[0]
    for item in list:
        if item > maxvalue:
            maxvalue = item
    return maxvalue
mylist = [1,2,3,4,5]
print(maxlist(mylist))

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)

def bacon():
    print("hello it's bacon") 
    return
bacon()

def myprint(text):
    print ("***"+str(text)+"***")
    return
myprint(88)


def myprintnew(text, decoration):
    print(decoration+str(text)+decoration)
    return
myprintnew(101, "-=-=-=-=-=-")



def doubleit(number):
    return number*2
print(doubleit(12121212))
print(doubleit(doubleit(12)))



def areaofcircle(radius):
    if radius <= 0:
        return "=-=-=-=-="
    pi=3.1415
    area=pi*radius**2
    return area

user_radius = float(input("radius:"))
print("the area is ",areaofcircle(user_radius))

def areaoftriangle(b,h):
    area = 0.5* b * h
    return area
user_base = float(input("enter the base of the triangle: "))
user_height = float(input("enter the height of the triangle: "))
print ('the area of trianglr is', areaoftriangle,(user_base, user_height))

reverse = ""
letter_num = 0

user_input = input("type in a word:")
user_input = str(user_input)

while letter_num < len(user_input):
    reverse = user_input[letter_num] + reverse
    letter_num = letter_num + 1
if reverse == user_input:
    print("the string is palindrome")
else:
    print ("the string is not palindrome")