kare
Minimal implementation of Function Currying for python.
Usage
You can curry any callable by applying the curry function to it:
from kare import curry
def my_sum(x: int, y: int, z: int) -> int:
return x + y + z
curried_sum = curry(my_sum)Curried functions take a single argument and return either a new function that takes a single argument or the result of applying all the arguments passed so far to the original function:
sum_two = curried_sum(2)
sum_five = sum_two(3)
sum_five(1) # == 6, equivalent to my_sum(2, 3, 1)If you chain multiple calls together for a more succint notation:
sum_five = curried_sum(2)(3)The curry function also works as a decorator:
@curry
def my_curried_sum(x: int, y: int, z: int) -> int:
return x + y + z
add_six = my_curried_sum(2)(4)Currently we only support functions with positional and specified number of arguments. The following:
@curry # This wil raise an exception
def variadic_positional_function(*args):
...
@curry # This wil raise an exception
def variadic_positional_function(*, x: int, y: int):
...
@curry # This wil raise an exception
def variadic_positional_function(x: int, y: int, **kwargs):
...If you need to do partial application on keyword arguments you can use functools' partial as usual.
