Javascript's foreach in python

foreach.py

accumulate = lambda t: lambda f: lambda *a, **k: t(f(*a, **k))

@accumulate(list)
def foreach(iterable, func):
    for i, x in enumerate(iterable):
        yield func(x, i)

mylist = list(chr(n) for n in range(65, 75))
foreach(mylist, lambda x, i: print('{} => {}'.format(i, x)))

# 0 => A
# 1 => B
# 2 => C
# 3 => D
# 4 => E
# 5 => F
# 6 => G
# 7 => H
# 8 => I
# 9 => J


print(foreach(range(10), lambda n, _: n ** 2))

# [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]

Javascript benefits from ignoring unneeded arguments, so that if you don't care about indices you can just not accept one in your lambda.

Python benefits from not being javascript.

[print('{} => {}'.format(i, x)) for i, x in enumerate(mylist)]
print([n ** 2 for n in range(10)])