Are you having difficulties with the problem NameError: name ‘xrange’ is not defined in Python? Don’t worry! In this article, we will help you understand the cause of it and give you some solutions to fix it. Let’s get started!

What is the main cause of this error? 

Apparently, Python 3 doesn’t have the built-in xrange() method from Python 2. To generate a range of numbers in Python 3, we can use the range() function. If you attempt to use xrange() in a Python 3 program, the “NameError: name ‘xrange’ is not defined” will be brought up.

For instance, we will get the error “NameError: name ‘xrange’ is not defined” as shown below after we run the commands.

3.8.8 (default, Apr 13 2021, 12:59:45)
[Clang 10.0.0 ]
Enter the number to calculate squares up to: 10
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-2-b0efe34caea9> in <module>
     7 end_point = int(input("Enter the number to calculate squares up to: "))
     8
----> 9 for i in xrange(2, end_point):
    10     print(f'{i} squared = {i**2}')
    11
NameError: name 'xrange' is not defined

However, there are two possible solutions for this error. We will closely examine these methods below and find the best solution. 

How to resolve “NameError: name ‘xrange’ is not defined” in Python? 

Method 1: Utilize range() rather than xrange() method

import sys
# Check Python version
print(sys.version)
end_point = int(input("Enter the number to calculate squares up to: "))
# Replace xrange with range
for i in range(2, end_point):
   print(f'{i} squared = {i**2}')

In this case, both xrange() and range() will return the same outcome. Let’s put our code to the test to see whether it works.

3.8.8 (default, Apr 13 2021, 12:59:45)
[Clang 10.0.0 ]
Enter the number to calculate squares up to: 10
2 squared = 4
3 squared = 9
4 squared = 16
5 squared = 25
6 squared = 36
7 squared = 49
8 squared = 64
9 squared = 81

Our project has successfully demonstrated the actual result.

Method 2: Downgrade the Python version 

The new Python version can be quickly downgraded by using the commands listed below. However, this does not apply to all situations; you should take a close look to determine which is best for you.. 

conda install python=2.9.

Overall, you should not utilize python 3 in this case since python cannot support the xrange(). We suppose that the Python 3 library and the application technique might contain errors or security holes. In Python 3, the range() option is highly suggested.

Conclusion

We hope you have found the best way to resolve the error NameError: name ‘xrange’ is not defined in Python on our page. We also hope that provides insight into the error you encountered and, ideally, a few more options for avoiding it. If you experience any further issues with this error, please leave a comment, and we will respond as soon as possible! Thank you for reading!

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