In Python, the two most important types of ranges are those defined by the built-in function range() and those defined by the built-in function xrange().
Use the range function to create a list of numbers from 1 to 10 using Python’s built-in range() function. You might think you have to use the xrange() function in order to get your results—but not so fast. range() is the built-in Python function for creating a list of numbers from one to another. xrange() creates a range of numbers from one to the next. In this example, let’s see how you can use range() instead of xrange().
![What Is The Difference Between Range() And Xrange() In Python? 2 What is the difference between range() and xrange() in Python?](https://www.codewithc.com/wp-content/uploads/2022/06/Python-Programming.jpg)
Here are some differences between range() and xrange(). This function will return a range between two numbers: range(x, y) The result is a list of integers between x and y. So if x is 3 and y is 6, it will return [3, 4, 5, 6]. If x is 0 and y is 10, it will return [0, 1, 2, 3, 4, 5, 6]. This function will return a generator object: xrange(x, y) It will iterate through all the numbers in the given range. You could iterate over all the items in a list or dictionary, for example: for i in xrange(1, 20): print i In Python 3, xrange() returns a generator object, whereas range() returns a list object: >>> xrange(1, 5) (1, 2, 3, 4) >>> range(1, 5) [1, 2, 3, 4] # If you use the xrange() in a for loop, you can’t use range(): >>> for i in xrange(1, 5): pass # SyntaxError: invalid syntax.
from future import print_function
import sys
r = range(1000)
x = xrange(1000)
for v in r: # 0..999
pass
for v in x: # 0..999
pass
print(sys.getsizeof(r)) # 8072
print(sys.getsizeof(x)) # 40