constable 0.0.1

One decorator for lazy debugging. Inserts print statements directly into your AST.

constable

One decorator for lazy debugging. Inserts print statements directly into your AST.

View the Github repository and the official docs.

$ pip install constable

Tested for python 3.8 and above.

Key Features

• Capture function args and result

• Monitor variable state at each assignment op

• Measure execution time

• Any of the above can be turned on/off.

Usage :

Monitoring functions

import constable

@constable.trace()
def add(a=1, b=2):
    return a + b

add(1, 2)

Output :

executing: add(a = 1, b = 2)
execution time: add(a = 1, b = 2) -> 0.00014877 seconds

Tracing variable assignments

import constable

@constable.trace(['a', 'b'])
def do_something(a=5, b=6):
    a = a + b
    c = a
    a = "Experimenting with the AST"
    b = c + b
    a = c + b
    return a

do_something(1, 2)

Output :

executing: do_something(a = 1, b = 2)
debug: do_something: a = 3
debug: do_something: a = Experimenting with the AST
debug: do_something: b = 5
debug: do_something: a = 8
execution time: do_something(a = 1, b = 2) -> 0.00009584 seconds