$14.$ Implement removeall

Read the specification of the function removeall in the module funcs. Implement this function according to its specification. Again, this function modifies the original list and does not return anything. Look at the test cases in tests.py if you are unsure.

Remember that you should never modify the loop$-$sequence in a for$-$loop. So your implementation should either loop over something else $($positions$)$ or use a while$-$loop. When you have implemented the function, test your answer with the test script. You should now pass all tests.

def removeall$($alist$,$n$)$:

$"""$

Removes all instances of n from alist

Examples:

If a $=[1,2,2,3,1],$ removeall$($a$,1)$ changes a to $[2,2,3]$

If a $=[1,2,2,3,1],$ removeall$($a$,2)$ changes a to $[1,3,1]$

If a $=[1,2,2,3,1],$ removeall$($a$,4)$ changes a to $[1,2,2,3,1]$

If a $=[1,1,1],$ removeall$($a$,1)$ changes a to $[]$

If a $=[],$ removeall$($a$,1)$ changes a to $[]$

Parameter alist: the list to modify

Precondition: alist is a list of numbers $($float or int$)$

Parameter n: the number to remove

Precondition: n is a number

$"""$