Shubham SayonProblem Formulation Have you come across the usage of range(len()) while trying to iterate across all the items of a given iterable? Now, this brings up a couple of questions – (i) Why do we use range(len())? (ii) How do we use range(len())? 📝Solution Generally, range(len()) allows you to iterate across a given iterable/sequence to … Read more
In this article, you will learn how to send a POST request using the urllib library in Python. Once you have gone through the procedure to send POST requests via urllib, we will also have a look at how to send POST requests using the requests library which is used to handle GET and POST … Read more
Problem Formulation: Consider that you are trying to read the contents of a text file. How will you read the text from the file and store it in a Python list? Scenario 1 To gain better clarity over the problem, let’s have a look at a similar question asked on StackOverflow: Before we dive into … Read more
Problem Formulation You have been given a number. How will you check if the number lies between two numbers? When you check if a number lies between two other numbers it returns a boolean that determines if the number is greater than or equal to the minimum number and also less than or equal to … Read more
Summary: Use negative step in the range() function to reverse the given sequnce as: range(start, stop, -step). Another workaround is to apply the reversed() function to the given range to reverse it as: reversed(range(start, stop)). Problem: Given a range/sequence of numbers, how will you reverse the range? Example: Given:# Given rangefor i in range(1, 6): … Read more
Summary: You can combine images represented in the form of Numpy arrays using the concatenate function of the Numpy library as np.concatenate((numpydata_1, numpydata_2), axis=1). This combines the images horizontally. Use syntax: np.concatenate((numpydata_1, numpydata_2), axis=0) to combine the images vertically. Problem Formulation Consider you have two images represented as Numpy arrays of pixels. How will you … Read more
Summary: You can use one of these methods to delete multiple keys from a dictionary Python –(1) Iterate across the list of keys to be deleted and use the syntax del dict[‘key’](2) Iterate across the list of keys to be deleted and call the dictionary.pop(key)method.(3) Eliminate unrequired keys and reconstruct the original dictionary using a dictionary … Read more
Problem Formulation Given two arrays of the same length but different orders. How will you shuffle the two arrays in unison? Shuffling two arrays in unison means reordering the elements of both arrays in the same pattern. Let’s understand this with the help of an example. Example: Given:arr_1 = [[1, 1], [2, 2], [3, 3]]arr_2 … Read more
Problem Formulation You appear at an interview, and the interviewer intends to test your skills in writing concise one-line solutions. So he decides to present you with a long and complex-looking piece of code that is seemingly intimidating and asks you to come up with one-line solutions for the given code. Given: Challenges: Guess the … Read more
In this tutorial we will unearth the solutions to three commonly asked questions that users come across while dealing with huge sets of data. Problem Formulation Given: Consider the following csv file (Note: You need to use it as a Pandas DataFrame). Here’s the list of the questions that we will be focusing upon in … Read more
Summary: To initialize multiple variables to the same value in Python you can use one of the following approaches: Use chained equalities as: var_1 = var_2 = value Use dict.fromkeys This article will guide you through the ways of assigning multiple variables with the same value in Python. Without further delay, let us dive into … Read more
To find the number of digits in an integer you can use one of the following methods: (1) Use Iteration (2) Use str()+len() functions (3) Use int(math.log10(x)) +1 (4) Use Recursion Problem Formulation Given: An integer value. Question: Find the number of digits in the integer/number given. Test Cases: Input: num = 123 Output: 3 … Read more