Meaning of range(5) in Python

The meaning of range(5) in Python

In Python, range(5) is a common function call used to generate a sequence of integers starting from 0 and ending at 5 (not including 5).

Syntax

range() The syntax of the function is as follows:

range(start, stop, step)

Parameter Description:

• start: The starting value of the sequence, the default is 0
• stop: The ending value of the sequence, the generated sequence does not include this value
• step: The step length of the sequence, the default is 1

Example

Example 1:

for i in range(5):
print(i)

The output is:

0
1
2
3
4

In the above code, range(5) generates a sequence of integers from 0 to 4, loops through each value and prints it out.

Example 2:

print(list(range(5)))

The output is:

[0, 1, 2, 3, 4]

In the above code, list(range(5)) converts the integer sequence into a list and prints it out.

Notes

• range() generates a lazy sequence instead of an actual list. If you need to generate a list, you can use list() to convert it into a list.
• In Python 2, the range() function returns a list, while in Python 3 it returns an iterable. If compatibility with Python 2 is required, use the xrange() function instead.

In short, range(5) in Python means generating a sequence of integers ranging from 0 to 5 (excluding 5), which can be used for looping or generating lists.