Python 3 | Functions

Functions | Coding_Challenges_1.py

"""
Create a function named lots_of_math(). This function should have four parameters named a, b, c, and d. The function should print 3 lines and return 1 value.

First, the sum of a and b.

Second, d subtracted from c.

Third, the first number printed, multiplied by the second number printed.

Finally, it should return the third number printed mod a.
"""

# Write your lots_of_math function here:
def lots_of_math(a, b, c, d): 
  first = a+b
  second = d-c
  third = first*second
  fourth = third%a
  print(first)
  print(second)
  print(third)
  return fourth


print(lots_of_math(1, 2, 3, 4))
# print: 3, -1, -3, 0
print(lots_of_math(1, 1, 1, 1))
# print: 2, 0, 0, 0

Functions | Coding_Challenges_10.py

"""
Write a function named average() that has two parameters named num1 and num2.

The function should return the average of these two numbers.
"""

# Write your average function here:
def average(num1, num2):
  return (num1 + num2) /2


print(average(1, 100))
# The average of 1 and 100 is 50.5
print(average(1, -1))
# The average of 1 and -1 is 0

Functions | Coding_Challenges_2.py

"""
Write a function named remainder() that has two parameters named num1 and num2.

The function should return the remainder of twice num1 divided by half of num2.
"""

# Write your remainder function here:
def remainder(num1, num2):
  return (2*num1)%(num2/2)


print(remainder(15, 14))
# print: 2
print(remainder(9, 6))
# print: 0

Functions | Coding_Challenges_3.py

"""
Some say that every one year of a human’s life is equivalent to seven years of a dog’s life. Write a function named dog_years() that has two parameters named name and age.

The function should compute the age in dog years and return the following string:

"{name}, you are {age} years old in dog years"
Test this function with your name and your age!
"""

# Write your dog_years function here:
def dog_years(name, age):
  return name+", you are "+str(age*7)+" years old in dog years"


print(dog_years("Lola", 16))
# print: "Lola, you are 112 years old in dog years"
print(dog_years("Baby", 0))
# print: "Baby, you are 0 years old in dog years"

Functions | Coding_Challenges_4.py

"""
Write a function named first_three_multiples() that has one parameter named num.

This function should print the first three multiples of num. Then, it should return the third multiple.

For example, first_three_multiples(7) should print 7, 14, and 21 on three different lines, and return 21.
"""

# Write your first_three_multiples function here:
def first_three_multiples(num):
  print(num*1)
  print(num*2)
  print(num*3)
  return num*3


first_three_multiples(10)
# print: 10, 20, 30, and return 30
first_three_multiples(0)
# print: 0, 0, 0, and return 0

Functions | Coding_Challenges_5.py

"""
Create a function called win_percentage() that takes two parameters named wins and losses.

This function should return out the total percentage of games won by a team based on these two numbers.
"""

# Write your win_percentage function here:
def win_percentage(wins, losses):
  return wins/ (wins + losses) * 100


print(win_percentage(5, 5))
# print: 50
print(win_percentage(10, 0))
# print: 100

Functions | Coding_Challenges_6.py

"""
Create a function called tip() that has two parameters named total and percentage.

This function should return the amount you should tip given a total and the percentage you want to tip.
"""

# Write your tip function here:
def tip(total, percentage):
    return total * (percentage/100)

  
print(tip(10, 25))
# print: 2.5
print(tip(0, 100))
# print: 0.0

Functions | Coding_Challenges_7.py

"""
Write a function named square_root() that has one parameter named num.

Use exponents (**) to return the square root of num.
"""

# Write your square_root function here:
def square_root(num):
  return num ** (0.5)


print(square_root(16))
# print: 4.0
print(square_root(100))
# print: 10.0

Functions | Coding_Challenges_8.py

"""
Write a function named introduction() that has two parameters named first_name and last_name.

The function should return the last_name, followed by a comma, a space, first_name another space, and finally last_name.
"""

# Write your introduction function here:
def introduction(first_name, last_name):
  return last_name + ", " + first_name + " " + last_name


print(introduction("James", "Bond"))
# print: Bond, James Bond
print(introduction("Maya", "Angelou"))
# print: Angelou, Maya Angelou

Functions | Coding_Challenges_9.py

"""
Write a function named tenth_power() that has one parameter named num.

The function should return num raised to the 10th power.
"""

# Write your tenth_power function here:
def tenth_power(num):
  return num**10


print(tenth_power(1))
# 1 to the 10th power is 1
# print: 1
print(tenth_power(0))
# 0 to the 10th power is 0
# print: 0
print(tenth_power(2))
# 2 to the 10th power is 1024
# print: 1024