Creating an Application: The Basics

What is Python?

Python is a high-level, interpreted programming language known for its readability and versatility. It supports multiple programming paradigms, including procedural, object-oriented, and functional programming. Python is widely used for web development, data science, artificial intelligence, automation, and more.

Basic Syntax

• Python uses indentation to define blocks of code (no curly braces or semicolons).
• Comments start with the # symbol.

Variables and Data Types

• Variables are containers for storing data. They don't need explicit declarations.
• Common data types include integers, floats, strings, lists, tuples, and dictionaries.

t1 = 6.0
t2 = 4.0

Functions

• Functions are reusable blocks of code defined using the def keyword.
• Parameters are passed inside parentheses.

def getAverage(x1, x2):
    x = (x1 + x2) / 2
    return x

Conditional Statements

• if, elif, and else are used for decision-making.
• Python relies on indentation to denote code blocks.

def getTextGrade(ngrade):
    text = ""
    if ngrade >= 7.5:
        text = "Very good"
    elif 5 <= ngrade < 7.5:
        text = "Good"
    else:
        text = "Fail"
    return text

Round Numbers

• The round() function is used to round numerical values.

average = round(average, 2)

Printing

• The print() function is used to display output.

print("Final grade: " + str(average) + " (" + text_average + ")")

These fundamentals cover the basics needed to understand and write a Python application. Further exploration of Python will enhance your ability to create more complex and powerful applications.