Problem Formulation Suppose you have a PDF file, but it’s too large and you’d like to compress it (perhaps you want to reduce its size to allow for faster transfer over the internet, or perhaps to save storage space). Even more challenging, suppose you have multiple PDF files you’d like to compress. Multiple online options … Read more
Before we learn about the money, let’s get this question out of the way: What Is PyTorch? Let’s have a look at the definition from the official PyTorch website: “An open source machine learning framework that accelerates the path from research prototyping to production deployment. More specifically, PyTorch is an optimized tensor library for deep … Read more
Problem Formulation Given a list of size n and two indices i,j < n. Swap the element at index i with the element at index j, so that the element list[i] is now at position j and the original element list[j] is now at position i. Examples: Swapping indices 0 and 2 in list [1, … Read more
Summary: df2 = pd.DataFrame(index=df1.index) can be used to to create an empty DataFrame. It will not have any columns but just an index which is the same as in the already given DataFrame, i.e., df1. Introduction Problem Statement: How to create an empty data frame with an index from another data frame? Example: Let’s consider … Read more
Most of the function names in Python can be intuitively connected to the meaning of the function. The NumPy reshape() function is not an exception. The reshape() function brings an array into another shape while keeping all the original data. I’ll demonstrate a couple of simple examples in the following video guide: To summarize how … Read more
This is part of our Flask series: Build Website with Flask – Part 1 Build Website with Flask – Part 2 Build Website with Flask – Part 3 Build Website with Flask – Part 4 Build Website with Flask – Part 5 Build Website with Flask – Part 6 Build Website with Flask – Part … Read more
You want to plot a series of data with unique styles. You need to pick various line styles from a list but not sure how to get started. This tutorial will help you out. Yes, there is a list of line styles in matplotlib. To get the list, import the lines from the matplotlib library. … Read more
This is part of our Flask series: Build Website with Flask – Part 1 Build Website with Flask – Part 2 Build Website with Flask – Part 3 Build Website with Flask – Part 4 Build Website with Flask – Part 5 Build Website with Flask – Part 6 Build Website with Flask – Part … Read more
Here’s an error I recently encountered when working with NumPy arrays: If you run the following code, you’ll experience a special ValueError: The output will be this error message: How can you fix this error? I’ll give you a short and a long answer to this question. Let’s start with the short one: Solution: Use … Read more
Problem Formulation Convert a string list to an integer list using the map() function. Example: Input: [‘1’, ‘2’, ‘3’] Output: [1, 2, 3] Input: [’42’] Output: [42] Input: [‘-1’, ‘-2’, ‘-3’] Output: [-1, -2, -3] Solution Using Map To convert a list of strings to a list of integers, you can “map to int” by … Read more
According to the Python version 3.10.3 official doc, the os module provides built-in miscellaneous operating system interfaces. We can achieve many operating system dependent functionalities through it. One of the functionalities is to generate the file names in a directory tree through os.walk(). If it sounds great to you, please continue reading, and you will … Read more
As you are reading this guide, I assume you have a keen interest in exploring the buzzword of modern-day technology called web3. Think about the Facebook app launch in 2004 and its evolution today. Or you may notice the emergence of online stores like Amazon or Alibaba out of nowhere. Web3 is expected to be … Read more