Joining Arrays in Python: Combining Multiple Arrays

In Python, array is a homogenous collection of Python's built in data types such as strings, integer or float objects. However, array itself is not a built-in type, instead we need to use the array class in Python's built-in array module.

First Method

To join two arrays, we can do it by appending each item from one array to other.

Here are two Python arrays −

Run a for loop on the array "b". Fetch each number from "b" and append it to array "a" with the following loop statement −

The array "a" now contains elements from "a" as well as "b".

Here is the complete code −

It will produce the following output −

array('i', [10, 5, 15, 4, 6, 20, 9, 2, 7, 8, 11, 3, 10])

Second Method

Using another method to join two arrays, first convert arrays to list objects −

The list objects can be concatenated with the '+' operator.

If "z" list is converted back to array, you get an array that represents the joined arrays −

Here is the complete code −

Third Method

We can also use the extend() method from the List class to append elements from one list to another.

First, convert the array to a list and then call the extend() method to merge the two lists −

It will produce the following output −

array('i', [10, 5, 15, 4, 6, 20, 9, 2, 7, 8, 11, 3, 10])



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