How to Use Python Range to Iterate Through Lists and Sequences

Python’s range function is a powerful tool that allows you to easily iterate through lists and sequences. By using range, you can create a sequence of numbers that can be used to access elements in a list or perform operations on a sequence.

To use range to iterate through a list, you first need to create a range object that represents the indexes of the list. You can do this by calling the range function with the length of the list as the argument. For example, if you have a list with 5 elements, you would create a range object like this:

“` python

my_list = [1, 2, 3, 4, 5]

for i in range(len(my_list)):

print(my_list[i])

“`

In this example, the range function creates a sequence of numbers from 0 to 4, which represent the indexes of the elements in my_list. The for loop then iterates through this sequence, accessing each element in the list and printing it out.

You can also use range to iterate through a sequence of numbers. For example, if you want to print out the numbers from 1 to 10, you can use range like this:

“` python

for i in range(1, 11):

print(i)

“`

In this example, the range function creates a sequence of numbers from 1 to 10, which are then printed out in the for loop.

You can also specify a step value when using range. For example, if you want to print out every other number from 1 to 10, you can use range like this:

“` python

for i in range(1, 11, 2):

print(i)

“`

In this example, the range function creates a sequence of numbers from 1 to 10 with a step value of 2, so only every other number is printed out.

Overall, Python’s range function is a versatile tool that can be used to easily iterate through lists and sequences. By understanding how to use range effectively, you can streamline your code and make it more efficient.