Answers for "delete a element from list python"

delete element of a list from another list python

l1 = ["a", "b", "c", "d", "e", "f"]
l2 = ["b", "c", "e"]

l1 = [elt for elt in l1 if elt not in l2]
# l1 = ['a', 'd', 'f']

python remove value from list

# Below are examples of 'remove', 'del', and 'pop' 
#   methods of removing from a python list
""" 'remove' removes the first matching value, not a specific index: """
>>> a = [0, 2, 3, 2]
>>> a.remove(2)
>>> a
[0, 3, 2]

""" 'del' removes the item at a specific index: """
>>> a = [9, 8, 7, 6]
>>> del a[1]
>>> a
[9, 7, 6]

""" 'pop' removes the item at a specific index and returns it. """
>>> a = [4, 3, 5]
>>> a.pop(1)
3
>>> a
[4, 5]

""" Their error modes are different too: """
>>> a = [4, 5, 6]
>>> a.remove(7)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: list.remove(x): x not in list
>>> del a[7]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: list assignment index out of range
>>> a.pop(7)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: pop index out of range

python remove element from list

myList = ["hello", 8, "messy list", 3.14]  #Creates a list
myList.remove(3.14)                        #Removes first instance of 3.14 from myList
print(myList)                              #Prints myList
myList.remove(myList[1])                   #Removes first instance of the 2. item in myList
print(myList)                              #Prints myList


#Output will be the following (minus the hastags):
#["hello", 8, "messy list"]
#["hello", "messy list"]

delete element from list value

>>> a=[1,2,3]
>>> a.remove(2)
>>> a
[1, 3]
>>> a=[1,2,3]
>>> del a[1]
>>> a
[1, 3]
>>> a= [1,2,3]
>>> a.pop(1)
2
>>> a
[1, 3]
>>>

Python Remove List Items

thislist = ["apple", "banana", "cherry"]
thislist.remove("banana")
print(thislist)

delete something from list python

import random


#Let's say that we have a list of names.
listnames = ['Miguel', 'James', 'Kolten']
#Now, I choose a random one to remove.
removing = random.choice(listnames)
#And to delete, I do this:
listnames.remove(remove)