add new element in a list code example

Example 1: add something to list python

#append to list
lst = [1, 2, 3]
something = 4
lst.append(something)
#lst is now [1, 2, 3, 4]

Example 2: append a list to another list as element

a = ['Jon', 'janni', 'Jannardhan']
b = ['28', '29', '30']
a.append(b)
print(a)
a.pop()
a.extend(b)
print(a)