Example 1: python concatenate lists
a = [1, 2, 3]
b = [4, 5]
# method 1:
c = a + b # forms a new list with all elements
print(c) # [1, 2, 3, 4, 5]
# method 2:
a.extend(b) # adds the elements of b into list a
print(a) # [1, 2, 3, 4, 5]
Example 2: python how to add one 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 for append:
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 for extend:
first_list = [1, 2, 3, 4, 5]
second_list = [6, 7, 8, 9]
first_list.extend(second_list)
print(first_list)
--> [1, 2, 3, 4, 5, 6, 7, 8, 9]
Example 3: add two list in python
list1 = ["a", "b" , "c"]
list2 = [1, 2, 3]
list1.extend(list2)
print(list1)
Example 4: how to join two lists in python
#define lists
my_list = ["a", "b"]
other_list = [1, 2]
#extend my_list by adding all the values from other_list into my list
my_list.extend(other_list)
# output: ['a', 'b', 1, 2]