Python next() Function

Introduction

The next() function in Python will print out the next item of the loop. It will run until the last element of the variable.

It will return items one by one and you can add a default return value if it reaches the last element.

And we will show you how to use the next() function in Python as you go through it below. Hope you understand.

Example

list = iter(["cat", "dog", "tiger"])

x = next(list)

print(x)

x = next(list)

print(x)

x = next(list)

print(x)

Output:

cat

dog

tiger

Definition

This function prints out the next item of the iterator.

You can add a default return value if it reaches the last element.

This function helps to separate elements clearly.

The syntax

next(iterable, default)

Parameter Values:

iterable: object (Required)

default: default value you add (Optional)

More examples

Example 1: add the default value

list = iter(["cat", "dog", "tiger"])

x = next(list)

print(x)

x = next(list)

print(x)

x = next(list)

print(x)

x = next(list, "pig")

print(x)

Output:

cat

dog

tiger

pig

Example 2: Error case

list = iter(["steak", "pizza"])

x = next(list)

print(x)

x = next(list)

print(x)

x = next(list)

print(x)

Output:

steak

pizza

—————————————————————————

StopIteration Traceback (most recent call last)

Untitled-1 in

4 x = next(list)

5 print(x)

—-> 6 x = next(list)

7 print(x)

StopIteration:

Because the iterator has 2 values ​​but you use the next() function 3 times.

Conclusion

Hope you understood the tutorial on how to use the next() function in Python.

Thanks for reading!