Python

Python is a general-purpose imperative and object-oriented language first appearing in 1991.

Hello World

#!/usr/bin/env python3

if __name__ == "__main__":
  print("Hello World!")

Coding Guide

Language Version

Python 3.x

Execution Model

• Interpreted, runs directly from source
• Code executes at the top level
• Main execution block: if __name__ == "__main__":

Key Characteristics

• Indentation-sensitive (4 spaces standard)
• Dynamic typing
• Case-sensitive

Fragment Authoring

Write valid Python statements or expressions. Your fragment becomes the script body, so code runs at the top level of the script.

Available Packages

Standard Python library is available. No additional packages are pre-installed.

Common Patterns

• Print: print("message")
• Main guard: if __name__ == "__main__":
• Functions: def function_name():
• List comprehensions: [x*2 for x in range(10)]
• String formatting: f"Value: {value}"

Examples

# Simple output
print("Hello, World!")

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

print(greet("Alice"))

# List processing
numbers = [1, 2, 3, 4, 5]
squared = [x**2 for x in numbers]
print(f"Sum of squares: {sum(squared)}")

Fraglet Scripts

Echo Args

#!/usr/bin/env -S fragletc --vein=python
import sys
print("Args:", " ".join(sys.argv[1:]))

Extension Infer

print("Inferred from .py extension!")

File Input

#!/usr/bin/env -S fragletc --vein=python
for i in range(3):
    print(f"Count: {i}")

Hello

#!/usr/bin/env -S fragletc --vein=python
print("Hello, Python!")

Multiline

#!/usr/bin/env -S fragletc --vein=python
def greet(name):
    return f"Hello, {name}!"
print(greet("Fraglet"))

Stdin Upper

#!/usr/bin/env -S fragletc --vein=python
import sys
for line in sys.stdin:
    print(line.strip().upper())

Test

#!/usr/bin/env -S fragletc --vein=python

if __name__ == "__main__":
  print("Hello World!")

Connections

Container Info