The string.join(iterable) method concatenates all the string elements in the iterable (such as a list, string, or tuple) and returns the result as a new string. The string on which you call it is the delimiter string—and it separates the individual elements. For example, ‘-‘.join([‘hello’, ‘world’]) returns the joined string ‘hello-world’. In this ultimate guide, … Read more
In Python, there are always multiple ways to accomplish the same thing—but with subtle differences in the side effects. A great coder will always choose the most effective way for the problem at hand. This tutorial shows you six different ways to add elements to a list in Python. In a nutshell, the different ways … Read more
Freelancing is the new way to organize the world’s talents. The appearance of big freelancing platforms made it possible to exchange talent efficiently—across borders, currencies, and niches. You can watch the following video as you go through the article: Freelance Developer Course Link This article is for you if: You’re a freelance developer and you’re … Read more
In this article, we will completely ignore the coding technicalities and syntax for a change. We’ll focus on time and work management, which represents a significant portion of a skillset of well-rounded and successful companies and individuals. Disclaimer: A clear distinction between project and product management might be blurred in some organizations, and could be … Read more
To check your version in your Python script—for example, to make sure that a user of your Python app uses the correct version—you can use the following commands. To achieve this, simply import the sys module and print the sys.version attribute to your Python shell: Try them in our interactive browser-based Python shell: Exercise: execute … Read more
To check your Python version, run python –version in your command line (Windows), shell (Mac), or terminal (Linux/Ubuntu). To check your Python version in your script, run import sys to get the module and use sys.version to find detailed version information in your code. Let’s get a quick overview of the different ways to check … Read more
If you’re like me, you try things first in your code and fix the bugs as they come. One frequent bug in Python is the IndexError: list index out of range. So, what does this error message mean? The error “list index out of range” arises if you access invalid indices in your Python list. … Read more
Python’s math module provides you with some of the most popular mathematical functions you may want to use. In this article, I’ll take you through the most common ones. You can also watch the following tutorial video in which I’ll guide you through the article: The math module is part of the Python standard library, … Read more
Definition np.cumsum(x): The function computes the cumulative sum of a NumPy array. For an array x with elements [a b c d] the cumulative sum is [a a+b a+b+c a+b+c+d]. Formally, each array element with index i is the sum of all elements with index j<i. numpy.cumsum(a, axis=None, dtype=None, out=None) Arguments: a — Array-like data … Read more
Python is the fastest-growing major programming language in the world. Want to participate as a Python coder and install Python on your Windows machine? Here are the seven steps to install Python on Windows: Visit website “Python Releases for Windows”: https://www.python.org/downloads/windows/ Click link “Download Windows x86-64 executable installer” under “Stable Releases” header. A popup opens. … Read more
The Python built-in list data type is powerful. However, the NumPy array has many advantages over Python lists. What are they? Advantages NumPy Advantages Python Lists Multi-dimensional Slicing Library-Independent Broadcasting Functionality Intuitive Processing Speed Less Complicated Memory Footprint Heterogeneous List Data Allowed Many Convenience Methods Arbitrary Data Shape (Non-Square Matrix) Let’s dive into the most … Read more
Do you want to convert a Python set to a list? Use the list(…) constructor and pass the set object as an argument. For example, to convert a set of strings friends into a list, use the code expression list(friends). Here’s an example code snippet that converts the set to a list using the list(…) … Read more