JaPython Cheat Sheet

def calc(num1, num2, operation):
    # use if/elif/else to check what operation to do
    if operation == "sum":
        return sum(num1, num2)
    elif operation == "product":
        return product(num1, num2)
    elif operation == "diff":
        return diff(num1, num2)
    elif operation == "div":
        return div(num1, num2)
    #call the correct function and return the answer

def sum(a, b):
    return a + b
    # calculate the sum of a and b

    # return the answer

def product(a, b):
    return a *b
    # calculate the product of a and b

    # return the answer

def diff(a, b):
    a - b
    #calculate the difference between a and b

    # return the answer

def div(a, b):
    if b != 0:
        return a /b
    else:
        print("Error")
    #calculate the division of a and b

    # return the answer

print(calc(10, 0, "div")) # division by zero

print(cal(1,2,"sum")) #output should be 3
print(calc (4, 2, "diff")) # output should be 2
print(calc (9, 3, "div" )) #output should be 3
print(calc (2, 12, "product")) #output should be 24

# write definitions for the following words
# use a multi-line string to print them to the screen

def printDefinitions(word):   # define the function named printDefinitions

    if word == "variable":
        # variable

        print ("""

        a variable is reserved memory locations to store values.

        """)

    elif word == "function":
        #function
        print ("""

        a function is block of organized

        """)
    elif word == "function call":
        #function call
        print ("""

        a function call is function that already have code, and use it.

        """)
    elif word == "parameter":
        #parameter
        print ("""

        a parameter is something that put in function to define variable.

        """)
    elif word == "argument":
        #argument
        print ("""

        a argument is parameter

        """)
    elif word == "string":
        #string
        print ("""

        a string is characters in quotes

        """)

    else:
        print ("Unknown word")
    
while True:
    
    user_input = input("Enter a word to define: ")

    printDefinitions(user_input) # function call

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)

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)

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)

while True:
    user_radius = input("Please enter the radius of the circle: ")
    radius = float(user_radius)
    pi = 3.1415
    area = pi * radius ** 2
    print("The area of the cicle is", area)