In Python, the range() function is a versatile tool for generating numerical sequences efficiently. Let’s explore its functionality, applications, and usage through practical examples.
Understanding range() Function
The range() function in Python is used to generate a sequence of numbers. Its syntax is as follows:
range(start, stop, step)
start: Optional parameter specifying the starting value of the sequence (default is 0).stop: Parameter indicating the ending value of the sequence (exclusive).step: Optional parameter representing the step size (default is 1).
Example 1: Generating a Sequence
for i in range(5):
print(i, end=' ')
Output 1:
0 1 2 3 4
Example 2: Specifying Start and Stop
for i in range(2, 10):
print(i, end=' ')
Output 2:
2 3 4 5 6 7 8 9
Example 3: Using Step Size
for i in range(1, 10, 2):
print(i, end=' ')
Output 3:
1 3 5 7 9
Example 4: Creating a List
numbers = list(range(5))
print(numbers)
Output 4:
[0, 1, 2, 3, 4]
Points to Remember
- The
range()function generates numerical sequences efficiently. - It is commonly used in for loops to iterate over a sequence of numbers.
range()supports specifying start, stop, and step parameters to customize the sequence.- Use
list(range())to generate a list based on the range.
