removing list with single element python code example

Example 1: how to delete list python

# delete by index
a = ['a', 'b', 'c', 'd']
a.pop(0)
print(a)
['b', 'c', 'd']

Example 2: python list .remove

a = [10, 20, 30, 20]
a.remove(20)
# a = [10, 30, 20]
# removed first instance of argument