Python’s built-in set() function creates and returns a new set object. A set is an unordered collection of unique elements. Without an argument, set() returns an empty set. With the optional argument, set(iter) initializes the new set with the elements in the iterable. Read more about sets in our full tutorial about Python Sets. Usage … Read more
A Quick Introduction To Tuples Python consists of 4 built-in data types that are used to store collections of data. These data types are: List Set Dictionary Tuple A tuple allows you to store multiple items within a single variable. Hence, it is a collection that is ordered and unchangeable/immutable. Also, tuples are heterogeneous as … Read more
What’s the difference between Statsmodels and Scikit-learn? Both have ordinary least squares and logistic regression, so it seems like Python is giving us two ways to do the same thing. Statsmodels offers modeling from the perspective of statistics. Scikit-learn offers some of the same models from the perspective of machine learning. So we need to … Read more
Numpy is a popular Python library for data science focusing on arrays, vectors, and matrices. Problem Formulation: Given a one-dimensional NumPy array arr. How to access the i-th value in the array? How to access all values between the i-th value (included) and the j-th value (excluded) from the array? How to access all values … Read more
In this blog post you will learn how to implement a linked list in Python from scratch. We will understand the internals of linked lists, the computational complexity of using a linked list and some advantages and disadvantages of using a linked list over an array. Introduction Linked list is one of the most fundamental … Read more
The web is filled with shitty tutorials about Python’s formatting feature. At times, it can become really confusing—and it’s hard to see the forest for the trees. In this tutorial, I’ll try to gradually build a basic understanding of the built-in format() function, what it does, and how you can use it to become a … Read more
Hey Finxters! Today we are going to talk about one of the most popular clustering algorithms: K-Means. Ever wondered how to organize seemingly unstructured data, making sense of unordered objects, in an easy way? For example, you might need to: perform customer segmentation store files based on their text content compress images with your own … Read more
Python’s built-in float(value) function converts the argument value to a float number. For example, float(’42’) converts the string value ’42’ into the float number 42.0. Argument value A Python object to be converted into a float number. The value object must have an __float__() method that returns the associated float number—otherwise a ValueError will be … Read more
Python’s built-in int(value) function converts the argument value to an integer number. For example, int(’42’) converts the string value ’42’ into the integer number 42. The int() function on a float argument rounds down to the closest integer. Argument value A Python object to be converted into an integer number. The value object must have … Read more
Problem Formulation: How to send and receive UDP multicast messages in Python? Background: Multicast is a distributed systems concept for group communication over a network (one-to-many or many-to-many). The choice of the network “transport layer” which the Multicast uses determines its type—for example, IP Multicast is sending a multicast over the IP layer and UDP … Read more
Problem Formulation: How to send and receive UDP messages in Python? Background: The User Datagram Protocol (UDP) network layer allows you to send messages without providing deliverability guarantees. UDP is unreliable—massages may be lost or delivered out of order. But this makes UDP also fast, lightweight, and the protocol of choice for many streaming scenarios … Read more
Problem Formulation Given string s, and character c. How to remove all characters in s after the first occurrence of c? Example Given: – string s = ‘hello world’, and – empty space character c = ‘ ‘. Desired result: ‘hello’ Method 1: string.index() + slicing To remove everything after the first occurrence of character … Read more