Building Simple Projects in Python

5 min readMay 16, 2024

In my quest to deepen my grasp of Python fundamentals, I embarked on a journey of creation, delving into the world of simple projects.

Project 1: A Simple Calculator

I chose a calculator as my first project because it’s straightforward and covers basic Python concepts like functions, user input, and conditional statements.

Step by Step

First, declare variables

 # Program Kalkulator Sederhana
 print("Kalkulator Sederhana")
 angka_pertama = int(input("Input angka pertama : "))
 angka_kedua = int(input("Input angka kedua : "))

 a = angka_pertama
 b = angka_kedua

Then write the function and output display

 def penjumlahan(a, b):
     return a + b

 def pengurangan(a, b):
     return a - b

 def perkalian(a, b):
     return a * b

 def pembagian(a, b):
     if a != 0 and b != 0:
         return round(a / b, 4)
     else:
         return "Bilangan tidak bisa dibagi 0"

 print("")
 print(f"Hasil Penjumlahan : {penjumlahan(a, b)}")
 print(f"Hasil Pengurangan : {pengurangan(a, b)}")
 print(f"Hasil Perkalian : {perkalian(a, b)}")
 print(f"Hasil Pembagian : {pembagian(a, b)}")

After that run the program in your terminal or IDE.

Project 2: Biodata

A simple program that emphasizes user input and then displays it again to the user.

Step by Step

First, declare variables for input data

 nama = input("Masukkan nama Anda : ")
 pekerjaan = input("Masukkan pekerjaan Anda : ")
 hobi = input("Masukkan hobi Anda : ")

Then write the output display

 print("\nBerikut detail informasi Anda")
 print("Nama :", nama)
 print("Pekerjaan :", pekerjaan)
 print("Hobi :", hobi)

After that run the program in your terminal or IDE.

Project 3: Graduation Status

If the minimum grade is met, then it will be passed

Step by Step

First, declare variable

 print("Cek Kelulusan")
 nilai = int(input("Masukkan nilai Anda : "))

Then make some condition, here are the rules:

If the score is over 80, the message “Selamat Anda Lulus!” will appear, which means you passed
If the score is below 80, you failed

    if nilai > 80:
        print("\nSelamat Anda Lulus!")
    else:
        print("\nMaaf Anda Belum Lulus. Silahkan Coba Lagi di Lain Kesempatan")

After that Run the program in your terminal or IDE.

Project 4: Flat Shapes Calculator

This program calculates the area and perimeter of flat shapes based on the user’s choice of flat shapes.

Step by Step

First, create function, here I created 3 functions to calculate the area and perimeter of a square, rectangle, and isosceles triangle.

 def LuasPersegi():
     print("\nHitung Luas dan Keliling Persegi")
     a = int(input("Input Nilai Sisi : "))
     luas_persegi = a * a
     keliling_persegi = a * 4
     print("\nLuas Persegi :", luas_persegi)
     print("Keliling Persegi :", keliling_persegi)

 def LuasPersegiPanjang():
     print("\nHitung")
     a = int(input("Input Panjang : "))
     b = int(input("Input Lebar : "))
     luas_persegi_panjang = a * b
     keliling_persegi_panjang = (2 * a) + (2 * b)
     print("\nLuas Persegi Panjang :", luas_persegi_panjang)
     print("Keliling Persegi Panjang :", keliling_persegi_panjang)

 def LuasSegitiga():
     a = int(input("\nInput Alas : "))
     t = int(input("Input Tinggi : "))
     k = int(input("Input Panjang Kaki : "))
     luas_segitiga = 1/2 * a * t
     keliling_segitiga = a + (k * 2)
     print("\nLuas Segitiga :", luas_segitiga)
     print("Keliling Segitiga :", keliling_segitiga)

Then create user input. The running flat calculation will be according to the user’s choice:

If the user enters 1, then the square calculation will begin
If the user enters 2, then the rectangle calculation will begin
If the user enters 3, then the isosceles triangle calculation will begin.
If the user enters a number other than 1/2/3, the program will display the message “Input Invalid” and stop.

    print("Hitung Luas dan Keliling Bangun Datar")
    print("1. Persegi")
    print("2. Persegi Panjang")
    print("3. Segitiga Sama Sisi")
    pilihan = int(input("Pilih Bangun Datar 1/2/3:"))

    if pilihan == 1:
        LuasPersegi()
    elif pilihan == 2:
        LuasPersegiPanjang()
    elif pilihan == 3:
        LuasSegitiga()
    else:
        print("\nInput Invalid")

After that run the program in your terminal or IDE.
User enters 1, then the square calculation will begin:

User enters 2, then the rectangle calculation will begin:

User enters 3, then the isosceles triangle calculation will begin:

User enters a number other than 1/2/3, the program will display the message “Input Invalid” and stop.

Project 5: Calculate Total Payment

The last program calculates the total payment after the 25% discount.

Step by Step

First, create variables to store the price of each item.

 nasi = 5000
 sate_ayam = 15000
 soto_kambing = 2000
 es_jeruk = 3000

Then, calculate and display the total pay before and after discount

 total_tagihan = nasi + sate_ayam + soto_kambing + es_jeruk
 diskon = 25/100
 total_bayar = total_tagihan * diskon

 print("Total Pembelian Sebelum Diskon :", total_tagihan)
 print("Total Tagihan Setelah Diskon :", total_bayar)

After that run the program in your terminal or IDE.