Timur Kheyfets tkheyfets

## values.py
def function_name (dict):
    for _, v in dict.items():
        yield v

## omit.py
def function_name (dict, keys):
    result = {}
    for k, v in dict.items():
        if k not in keys:
            result[k]  = v
    return result

## group_by.py
def function_name (collection, k):
    result = {}
    for x in collection:
        prop = x[k]
        if prop not in result:
            result[prop] = []
        result[prop].append(x)
    return result


## reject.py
def function_name (iterable, f):
   for x in iterable:
       if not f(x): yield x

## reduce_right.py
def function_name (iterable, f, i = None):
    result = i
    for x in iterable[::-1]:
        result = f(result, x)
    return result


## invert.py
def function_name (dict):
    result = {}
    for k, v in dict.items():
        result[v] = k
    return result

## reduce.py
def function_name (iterable, f, i = None):
    result = i
    for x in iterable:
        result = f(result, x)
    return result


## keys.py
def function_name (dict):
    for k in dict:
        yield k

## memoize.py
def function_name (f):
    dict = {}
    def inner_function(x):
        if x not in dict:
            dict[x] = f(x)
        return dict[x]
    return inner_function

## last.py
def function_name (iterable):
    if len(iterable) > 0:
        return iterable[-1]
    else:
        return None