Python next() function

Python next() function

The next() function in Python retrieves the next item from the iterator. 

Syntax

next(iterator[, default])

Parameter

iterable: It is a required parameter which represents an iterable object.

default: This parameter represents a default value to return if the iterable has reached to its end.

Return

This function returns the next item in an iterator.

Example 1

# Python program explaining
# the next() function
week_list = iter(["Monday", "Tuesday", "Wednesday","Thursday","Friday"])
val = next(week_list)
print(val)
val = next(week_list)
print(val)
val = next(week_list)
print(val)
val = next(week_list)
print(val)

Output

Monday
Tuesday
Wednesday
Thursday

Example 2

# Python program explaining
# the next() function
list_val = [11,12, 13, 14, 15]
# converting list to an iterator
list_val = iter(list_val)
print ("The contents of the list are:")
# using default
while (1) :
    next_val = next(list_val,'end')
    if next_val == 'end':
        print ('No more data is present!')
        break
    else :
        print (next_val)

Output

The contents of the list are:
11
12
13
14
15
No more data is present!