CODEWITHSUNDEEP
python
wahlysadventures
wahlysadventures

Reputation: 139

Removing an integer from a list (both input from user)

I want to write a function that will remove a certain integer from a list. Both of the values are input. For example, removeValues([1, 2, 3], 3) would return the list [1, 2]:

def removeValues(aList, n):
    newList = []
    if n in aList:
        aList.remove(n)

        newList.append(aList)
    else:
        return False

I am not sure if .remove is the right way to go.

Upvotes: 0

Views: 458

Answers (3)

zayora
zayora

Reputation: 418

A function that will remove all occurrences of a specific value from a list could be written like so:

>>> def removeAll(list, value):
...     while value in list:
...         list.remove(value)
...
>>> a = [1,2,3,3,4]
>>> removeAll(a, 3)
>>> print( a )
[1,2,4]

Upvotes: 0

Chad S.
Chad S.

Reputation: 6633

Use a list comprehension

def removeValues(aList, n):
    return [ i for i in aList if i != n ]

Upvotes: 2

saikumarm
saikumarm

Reputation: 1575

list(filter(lambda x : x != 3, [1,2,3]))

Use filter, Filter takes a function reference and list of elements. the function is written to accept a list element and return true or false based on the desired predicate like x != 3. for every element the function checks the predicate and only if the condition return True the element is included in the output list.

As said in the comments, a simple remove on the list will do the job.

Upvotes: 0

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