# Combine Two Lists into 2D Array in Python (3 Examples)

Hi! This tutorial will show you how to merge 2 lists into a 2D array in the Python programming language.

Here is an overview:

Letâ€™s get right into the Python code!

## Create Example Lists

We will create 2 example Python lists of integers that will be consolidated into a 2D array in this tutorial.

So, in your preferred Python IDE, run the lines of code below to create the example Python lists:

```list1 = [1, 2, 3]

print(list1)

# [1, 2, 3]

print(type(list1))

# <class 'list'>

list2 = [4, 5, 6]

print(list2)

# [4, 5, 6]

print(type(list2))

# <class 'list'>```

With the Python lists created, we will now examine two ways to join both lists together as a 2D array.

## Example 1: Merge 2 Lists into a 2D Array Using list() & zip() Functions

In this first example, we will use the built-in list() function and zip() function to join the two lists into a 2D array:

```array_2d = list(zip(list1, list2))

print(array_2d)

# [(1, 4), (2, 5), (3, 6)]

print(type(array_2d))

# <class 'list'>```

Here, the `zip()` function is used to pair corresponding elements from both lists.

The resulting pairs are then converted into a list using the `list()` function. Then, the contents of `array_2d` are printed to the console using the print() function.

Although the output is not exactly a 2D array, it is considered such by some sources.

## Example 2: Merge 2 Lists into a 2D Array Using List Comprehension

In this next example, we will use list comprehension to combine both lists into a 2D array:

```array_2d = [[list1[i], list2[i]] for i in range(len(list1))]

print(array_2d)

# [[1, 4], [2, 5], [3, 6]]

print(type(array_2d))

# <class 'list'>```

In the above example, we used list comprehension to iterate through the elements in each list, and stored those elements inside sublists.

This action, thus, returned a 2D array of 3 rows and 2 columns, i.e. a 3 x 2 array.

## Example 3: Merge 2 Lists into a 2D Array Using for Loop & zip() Function

In this last example, we will use a for loop and the built-in `zip()` function to consolidate both lists into a 2D array:

```array_2d = []

for i in zip(list1,list2):

array_2d.append(list(i))

print(array_2d)

# [[1, 4], [2, 5], [3, 6]]

print(type(array_2d))

# <class 'list'>```

The `zip()` function takes two or more iterables (e.g., lists, tuples, or strings) and aggregates them into a single iterable of tuples.

We then used the for loop to loop through the returned list of tuples, and parsed the loop variable to the `list()` function, which then returned a 2D array of 3 rows and 2 columns.

## Video, Further Resources & Summary

Do you need more explanations on how to merge 2 lists into a 2D array in Python? Then you should have a look at the following YouTube video of the Statistics Globe YouTube channel.

In the video, we explain in some more detail how to merge 2 lists into a 2D array in Python.

Furthermore, I encourage you to check out other interesting Python list tutorials on Statistics Globe, starting with these:

This post has shown, using three examples, how to merge 2 lists into a 2D array in Python. Your use case will determine which method to adopt.

This page was created in collaboration with Ifeanyi Idiaye. You might check out Ifeanyiâ€™s personal author page to read more about his academic background and the other articles he has written for the Statistics Globe website.

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