Diploma Python Programming - Module 04 - Alison 03

Kita akan membuat summary tentang "storing number" di Module ke 4, pelajaran Python programming ini. 

Image - Python programming (credit to Google)

Module 04: Storing Numbers - Online Course | Alison

Storing number

width = 20

height = 5

area = width * height

perimeter = 2*(width + height)

print(area)

print(perimeter)

Run Python File:

100

50

Formatting Number: Formatting Numbers - Online Course | Alison

Tak bisa digabung string + number

area = 0

width = 20

height = 10

# Triangle

area = width * height/2

print("The area ytiangle would be " + area)

Run Python File:

print("The area ytiangle would be " + area)

Note:

TypeError: can only concatenate str (not "float") to str

Now, we change to %d and %f...> d for decimal and f for float

area = 0

width = 20

height = 10

# Triangle

area = width * height/2

print("The area triangle would be %d" % area)

print("The area triangle would be %f" % area)

Run Python File:

The area triangle would be 100

The area triangle would be 100.000000

we change to %0.1f

area = 0

width = 20

height = 10

# Triangle

area = width * height/2

print("The area triangle would be %d" % area)

print("The area triangle would be %f" % area)

print("The area triangle would be %0.1f" % area)

Run Python File:

The area triangle would be 100

The area triangle would be 100.000000

The area triangle would be 100.0

Next Lesson, Inputting Numbers: Inputting Numbers - Online Course | Alison

Yang diprint string

salary = input("enter your salary: ")

bonus = input("enter your bonus: ")

paycheckamount = salary + bonus

print(paycheckamount)

Run Python File:

enter your salary: 500

enter your bonus: 75

50075 ...> wrong, should be 575

Now, we change string to be float or int

salary = input("enter your salary: ")

bonus = input("enter your bonus: ")

paycheckamount = float(salary) + float(bonus)

paycheckamount = int(salary) + int(bonus)

print(paycheckamount)

Run Python File:

enter your salary: 500

enter your bonus: 75

575

Challenge:

user enter loan cost + interest rate + number of years.

calculate monthly payment: 

M = L [i(1+i)n] / [(1+i)n-1]

M = Monthly payment

L = Loan amount

i = interest rate, i = 5% = 0.05

n = number of payment

loan = input("enter your loan amount: ")

numberpay = input("enter your number of payment: ")

interest = 0.05

MonthlyPay = loan[interest(1+interest)numberpay] / [(1+interest)numberpay-1]

Fix from copilot:

loan = float(input("Enter your loan amount: "))
number_of_payments = int(input("Enter the number of payments: "))
interest_rate = 0.05

monthly_interest_rate = interest_rate / 12
denominator = (1 + monthly_interest_rate) ** number_of_payments - 1

monthly_payment = loan * (monthly_interest_rate * (1 + monthly_interest_rate) ** number_of_payments) / denominator

print(f"Your monthly payment is: ${monthly_payment:.2f}")

Note : The formula for the monthly payment is based on the annuity formula.

VSCode

loan = float(input("Enter your loan amount: "))

number_of_payments = int(input("Enter the number of payments: "))

interest_rate = 0.05

monthly_interest_rate = interest_rate / 12

denominator = (1 + monthly_interest_rate) ** number_of_payments - 1

monthly_payment = loan * (monthly_interest_rate * (1 + monthly_interest_rate) ** number_of_payments) / denominator

print(f"Your monthly payment is: ${monthly_payment:.2f}")

Run Python File:

Enter your loan amount: 140000

Enter the number of payments: 175

Your monthly payment is: $1128.40

When working with variables remember you can store numbers as well as strings, the quotes around the text indicates a string if you want to assign a numeric value to the variable you simply enter the number.

You can perform math operation on variables containing numeric values, the operation symbols for maths in programming are slightly different but many are the same.

Common math operations:+ Addition- Subtraction* Multiplication/ Division** Exponent (is for cubing or the power of a value)% Modulo (is giving you the remainder of a division)

The math rules of order operations are the same in programming as it is in normal mathematics  

After completing this module, you will be able to:

Recognize the process of using dates in your program.

Identify the different methods to format dates in your program.

Recognize the use the same function to format time as you did for dates. 

Next Lesson: Module 05

Date and Time: Dates - Online Course | Alison

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Dave Gray

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