Python Online Compiler

Write, run, and share Python code online with OneCompile's powerful compiler. Perfect for learning, testing, and prototyping.

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Python Overview

Python is a high-level, interpreted programming language known for its simplicity and versatility. It is widely used in various domains, including web development, data analysis, artificial intelligence, scientific computing, and more. Python's clean syntax and readability make it an excellent choice for beginners and experienced programmers alike. Learn more about Python

Key Features of Python:

  • Easy to Learn: Python's syntax is clear and intuitive, making it easy for newcomers to pick up. Discover more
  • Extensive Libraries: Python has a vast collection of libraries and frameworks that help streamline development. Explore libraries
  • Community Support: A large and active community provides extensive support and resources. Join the community
  • Cross-Platform: Python can run on various platforms, including Windows, macOS, and Linux. Get Python
  • Versatile: Python can be used for web development, data science, machine learning, automation, and more. Learn about its uses

Basic Syntax

Python uses indentation to define blocks of code, which helps maintain a clean structure. Here's a simple example:

if True:
    print("This is a block of code.")

Python Examples:

Here are some basic examples of Python code:

1. Hello World

print("Hello, World!")

2. Simple Calculator

# This function adds two numbers
def add(a, b):
    return a + b

# Example usage
result = add(5, 3)
print("The sum is:", result)

3. Factorial Calculation

# Function to calculate factorial
def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n-1)

# Example usage
print(factorial(5))  # Output: 120

Data Types in Python

Python supports various data types, including:

  • Integers: Whole numbers (e.g., 1, 2, 3) Learn more
  • Floats: Decimal numbers (e.g., 1.5, 2.7) Learn more
  • Strings: Text data (e.g., "Hello, World!") Learn more
  • Booleans: True or False values Learn more
  • Lists: Ordered collections of items (e.g., [1, 2, 3]) Learn more
  • Dictionaries: Key-value pairs (e.g., {'name': 'Alice', 'age': 25}) Learn more

Control Flow

Python uses control flow statements such as if, for, and while to control the execution of code:

for i in range(5):
    print(i)

Functions in Python

Functions are defined using the def keyword:

def greet(name):
    return f"Hello, {name}!"

print(greet("Alice"))  # Output: Hello, Alice!

Common Libraries

Some popular libraries include:

Using the Code Editor

To use the online Python compiler:

  1. Select Python from the language dropdown.
  2. Write or paste your Python code in the code editor section.
  3. Enter any input your code requires in the Input section.
  4. Click the Run button to execute your code.
  5. The output will appear in the Output section.

Best Practices

Here are some best practices for writing Python code:

  • Use meaningful variable names.
  • Keep your code DRY (Don't Repeat Yourself).
  • Comment your code to explain complex logic.
  • Follow the PEP 8 style guide for Python code. Learn more
  • Write tests for your code to ensure it works as expected. Learn more about testing

Learning Resources

Here are some great resources to learn Python: