nfo

Basic Usage

Demonstrates the core nfo decorators: @log_call and @catch.

What it shows

• @log_call — automatically logs function args, return value, duration, and exceptions
• @catch — like @log_call but suppresses exceptions, returns a default value instead

Run

pip install nfo
python examples/basic-usage/main.py

Output

=== @log_call ===
add(3, 7) = 10

greet('nfo') = Hello, nfo!

=== @catch (suppresses exceptions) ===
risky_divide(10, 0) = None  (no crash!)

risky_divide(10, 3) = 3.3333333333333335

Key code

from nfo import log_call, catch

@log_call
def add(a: int, b: int) -> int:
    return a + b

@catch
def risky_divide(a: float, b: float) -> float:
    return a / b  # returns None on ZeroDivisionError

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