Lists of even integers

This problem has you write a function to process a List $[$List $[$int$]]($a list of lists of integers$),$ and accumulate a List $[$List $[$int$].$ The starter code provides an accumulator for the result and a loop over the sublists, and you need to write the code that checks whether sublist contains only even ints. Note how the helper function is used!

$```$

$|$from typing import List

def only$\_$evens$($lst: List$[$List$[$int$]])->$ List$[$List$[$int$]]$:

$"""$Return a list of sublists of lst $($including empty sublists$)$ that contain

only even integers, in the order in which they occur in lst$.$

$>>>$ only$\_$evens$([[1,2,4],[4,0,6],[],[22,4,3],[2]])$

$[[4,0,6],[],[2]]$

$""!"$

even$\_$lists $=[]$

for sublist in lst:

# write your code here

return even$\_$lists

def has$\_$only$\_$evens$($lst: List$[$int$])->$ bool:

$"""$Return whether lst has only even numbers. Return True on empty list.

$>>>$ has$\_$only$\_$evens$([])$

True

$>>>$ has$\_$only$\_$evens$([2,4,-6])$

True

$>>>$ has$\_$only$\_$evens$([2,4,3,-6])$

False

$""!"$

# write your code here

$```$