Updating and Deleting Elements – list¶
Here is how we can update elements in the list as well as delete elements from the list in Python.* We can assign an element to the list using index to update.
- There are multiple functions to delete elements from list.
remove– delete the first occurrence of the element from the list.pop– delete the element from the list using index.clear– deletes all the elements from the list.
In [1]:
l = [1, 2, 3, 4]
In [2]:
l[1] = 11
In [3]:
l
Out[3]:
[1, 11, 3, 4]
In [4]:
l = [1, 2, 3, 4, 4, 6]
In [5]:
l.remove?
Signature: l.remove(value, /) Docstring: Remove first occurrence of value. Raises ValueError if the value is not present. Type: builtin_function_or_method
In [6]:
l.remove(4)
In [7]:
l
Out[7]:
[1, 2, 3, 4, 6]
In [8]:
l.pop?
Signature: l.pop(index=-1, /) Docstring: Remove and return item at index (default last). Raises IndexError if list is empty or index is out of range. Type: builtin_function_or_method
In [9]:
l.pop()
Out[9]:
6
In [10]:
l
Out[10]:
[1, 2, 3, 4]
In [11]:
l.pop(2)
Out[11]:
3
In [12]:
l
Out[12]:
[1, 2, 4]
In [13]:
l.clear()
In [14]:
l
Out[14]:
[]