Python range is a built-in function that generates a sequence of numbers. It is commonly used in for loops to iterate over a sequence of numbers. Understanding how to use the range function effectively can greatly enhance your Python programming skills.
The range function in Python has three parameters: start, stop, and step. The start parameter specifies the starting point of the sequence, the stop parameter specifies the ending point of the sequence (non-inclusive), and the step parameter specifies the increment between each number in the sequence. If the step parameter is not specified, it defaults to 1.
For example, the following code snippet generates a sequence of numbers from 0 to 9:
“`
for i in range(10):
print(i)
“`
This code will output the numbers 0 to 9, as the range function starts at 0 by default and stops at 10 (non-inclusive).
You can also specify the starting point of the sequence by passing in a second parameter to the range function. For example, the following code snippet generates a sequence of numbers from 1 to 10:
“`
for i in range(1, 11):
print(i)
“`
In this code snippet, the range function starts at 1 and stops at 11 (non-inclusive).
Additionally, you can specify the increment between each number in the sequence by passing in a third parameter to the range function. For example, the following code snippet generates a sequence of even numbers from 2 to 10:
“`
for i in range(2, 11, 2):
print(i)
“`
In this code snippet, the range function starts at 2, stops at 11 (non-inclusive), and increments by 2 each time.
Understanding how to use the range function effectively can make your code more concise and readable. It is a powerful tool for iterating over sequences of numbers in Python. Experiment with different parameters and combinations to see how the range function can be used in your own projects.
