lined 0.0.5

Building simple pipelines, simply.

lined

Building simple pipelines, simply.

A really simple example:

>>> p = Pipeline(sum, str)
>>> p([2, 3])
'5'

A still quite simple example:

>>> def first(a, b=1):
...     return a * b
>>>
>>> def last(c) -> float:
...     return c + 10
>>>
>>> f = Pipeline(first, last)
>>>
>>> assert f(2) == 12
>>> assert f(2, 10) == 30

Let's check out the signature of f:

>>> from inspect import signature
>>>
>>> assert str(signature(f)) == '(a, b=1) -> float'
>>> assert signature(f).parameters == signature(first).parameters
>>> assert signature(f).return_annotation == signature(last).return_annotation == float

Border case: One function only

>>> same_as_first = Pipeline(first)
>>> assert same_as_first(42) == first(42)