Sequential wrappers for python functions. A library that allows you to define the order of function execution independent of the functions themselves.

Sequential provides three different convenience decorators:

• before executes its argument before the decorated function
• after executes its argument after the decorated function
• during executes its argument in a separate thread while the decorated function runs (waiting for both to finish)

Each of these takes the same arguments as the decorated function.

before and after can be used in a chain with the decorated function, passing the result of one into the result of the next:

def add_c(word=''):
    return word + 'c'

def add_b(word=''):
    return word + 'b'

@before(add_c, chain=True)
@after(add_b, chain=True)
def add_a(word=''):
    return word + 'a'

print(add_a()) # 'cab'

Otherwise, the functions are simply run in order and the result of the decorated function is returned.