The range() Function in Python: Example.What Is the range() Function in Python and What Does It Do?.Want to nail your next tech interview? Sign up for our FREE Webinar. The highest ever offer received by an IK alum is a whopping $1.267 Million!Īt IK, you get the unique opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies. Our alums consistently land offers from FAANG+ companies. Having trained over 10,000 software engineers, we know what it takes to crack the toughest tech interviews. If you are preparing for a tech interview, check out our technical interview checklist, interview questions page, and salary negotiation e-book to get interview-ready! Also, read Python String join() Method, Python Exit commands, and Type and Isinstance In Python for more content on Python coding interview preparation. In this article, we’ll learn about Python's range() function and how to use it. We've written a series of articles to help you learn and brush up on the most useful Python functions. An integral part of Python are its built-in functions. It is no wonder that it is one of the most popular programming languages. However, in Python 3, xrange() is replaced by range(), rendering the latter more versatile across both versions.Python supports object-oriented programming and has a concise, readable, and easy-to-learn syntax. While range() constructs a list of integers in memory, xrange() generates an iterator, conserving memory, making it advantageous for large ranges. Python offers both the range() and xrange() functions for generating sequences of integers. As a result, any usage of xrange() in Python 3 will trigger a "NameError: name 'xrange' is not defined" error. However, in Python 3, the range() function is a direct equivalent to the xrange() method, rendering the latter obsolete. In Python 2, iterable objects are often generated using the xrange() function, frequently employed within "for loops," demonstrating similarities to generators. The error message "'xrange' is not defined" signifies an attempt to execute Python 2 code within a Python 3 environment. Of course, you could always use the 2to3 tool that Python provides in order to convert your code, but that introduces more complexity. The range() function now does what xrange() does in Python 2.x, so to keep your code portable, you might want to stick to using range() instead. In Python 3.x, the xrange() function does not exist anymore. Only particular range is displayed on demand and hence called lazy evaluation. xrange() – This function returns the generator object that can be used to display numbers only by looping.range() – This returns a list of numbers created using range() function.Particularly when dealing with expansive ranges, the use of xrange() is often recommended for enhanced performance during iteration. Functioning as an opaque sequence, it offers identical values as a corresponding list without the need to store them all concurrently. The merit of the xrange() type resides in its consistent memory consumption, as an xrange() object maintains a uniform memory footprint regardless of the range's magnitude. Additionally, xrange() exhibits limitations in scenarios requiring a true list structure, such as the absence of support for slices or list methods, further restricting its usability. However, it's imperative to note that range() may incur higher memory consumption. Conversely, the xrange() type necessitates the recreation of integer objects for each iteration, thereby resulting in comparatively slower performance. The range() type boasts a performance advantage when iterating over the same sequence repeatedly, owing to its utilization of genuine integer objects. If you want to write code that will run on both Python 2 and Python 3, you can't use xrange(). In python 3, range() does what xrange() used to do and xrange() does not exist.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |