oncecall

oncecall

A tiny Python decorator that ensures a function is executed only once per process.
Subsequent calls return the cached result without re-running the function.

Features

• Simple and lightweight
• Thread-safe
• No external dependencies
• Uses only Python standard library

Installation

pip install oncecall

Usage

from oncecall.once import once

@once
def initialize():
    print("Running initialization")
    return 123

initialize()
# Output:
# Running initialization

initialize()
# Output:
# (nothing printed)

The function body is executed only once. All later calls return the same result.

Typical Use Cases

• One-time initialization logic
• Preventing duplicate side effects
• Expensive setup operations
• Guarding code that should only run once

Notes

• The execution is limited to the current Python process.
• The cached result is stored in memory.
• Function arguments are ignored; the function always runs only once.

Code Protection

This package uses code obfuscation to protect proprietary logic.

License

MIT License