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Bind functions to run only once inside a desired scope.

Project description

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Bind functions to only run once inside a desired scope.

Documentation

The Rig class exposes two methods: bind and free. Bind takes one argument: A name for a scope to bind the function.

Functions wrapped with bind will be called only once until the scope it is inside is freed.

Functions wrapped with free will free all the bound functions in a specific scope after the function’s execution.

Example:

import shibari


rig = shibari.Rig('ebi')


@rig.bind('ebi')
def timestamp():
    return str(time.time())


@rig.free('ebi')
def finish():
    pass


>>> t = timestamp()
>>> t2 = timestamp()
>>> assert t == t2

>>> finish()

>>> t3 = timestamp()
>>> t4 == timestamp()
>>> assert t != t3
>>> assert t3 == t4

Functions that take arguments can be bound, but will always return the same result until they are freed.

Example:

import shibari


rig = shibari.Rig('ebi')


@rig.bind('ebi')
def timestamp(a, b):
    return f'{a}_{str(time.time())}_{b}'


>>> t = timestamp('goodbye', 'world')
>>> t2 = timestamp('hello', 'space')
>>> assert t == t2

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