python append list to another list

# Basic syntax:
first_list.append(second_list) # Append adds the the second_list as an
#	element to the first_list
first_list.extend(second_list) # Extend combines the elements of the 
#	first_list and the second_list

# Note, both append and extend modify the first_list in place

# Example usage:
first_list = [1, 2, 3, 4, 5]
second_list = [6, 7, 8, 9]
first_list.append(second_list)
print(first_list)
--> [1, 2, 3, 4, 5, [6, 7, 8, 9]]

# Example usage:
first_list = [1, 2, 3, 4, 5]
second_list = [6, 7, 8, 9]
first_list.extent(second_list)
print(first_list)
--> [1, 2, 3, 4, 5, 6, 7, 8, 9]

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

my_list = ['geeks', 'for'] 
another_list = [6, 0, 4, 1] 
my_list.extend(another_list) 
print my_list 
#['geeks', 'for', 6, 0, 4, 1]

a = [1, 2, 3]
b = [4, 5, 6]
a += b
# another way: a.extend(b)

list1 = [1,2,3,4,5]
list1.append([6,7])
# ouput = 1,2,3,4,5,6,7