pipe.py

from functools import partial

class l(object):
   def __init__(self, func, *args, **kwargs):
       self.func = func
       self.args = args
       self.kwargs = kwargs

   def __ror__(self, lhs):
       return self.func(lhs, *args, **kwargs)

"""
Example usage:
    >>> import pipe
    >>> [1, 2, 3] |pipe.r(filter, lambda x: x % 2) |pipe.r(map, lambda x: x**2)
    [1, 9]
"""
class r(object):
   def __init__(self, func, *args, **kwargs):
       self.func = partial(func, *args, **kwargs)

   def __ror__(self, lhs):
       return self.func(lhs)