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Creating an application in Python can range from a simple script to a fully interactive program connected to a database. Below is a step-by-step approach to building your first Python app.
Basic Script
Step 1 ā Write Your First Program Open a text editor (VSCode, PyCharm, or Notepad) and create a file app.py:
print("Welcome to My First Python App!")Gekopieerd.āKopiërenSave the file and run it in the terminal:
python app.pyGekopieerd.āKopiërenThis confirms your Python environment is working.
Interactive Application
Step 2 ā Add User Interaction Enhance your app to take input and process it:
num = int(input("Enter a number: "))if num % 2 == 0:print("It's an Even number!")else:print("It's an Odd number!")Gekopieerd.āKopiërenRun it again and test with different inputs. This introduces input handling and conditional logic.
Database Integration
Step 3 ā Connect to PostgreSQL Many real-world apps require data storage. Install the PostgreSQL driver:
pip install psycopg2Gekopieerd.āKopiërenCreate a database and table in PostgreSQL:
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