In Python 3.10, the for loop syntax has been extended to include a new keyword step. The step keyword allows you to specify the increment or decrement value for the loop variable. Here is an example:
# Loop from 0 to 10 in steps of 2
for i in range(0, 11, 2):
print(i)
In this example, the range() function returns a sequence of numbers starting from 0, ending at 10 (excluding 11), and incrementing by 2. The loop variable i takes on each value in this sequence, which is then printed to the console.
You can also use step with negative values to create a decrementing sequence. Here's an example:
# Loop from 10 to 0 in steps of -2
for i in range(10, -1, -2):
print(i)
In this example, the range() function starts at 10 and decrements by 2 until reaching -1 (excluding -2). The loop variable i takes on each value in this sequence, which is printed to the console.
It's important to note that the end parameter of the range() function is always exclusive, so the range in the examples above stops **before** reaching the specified value.