Problem Formulation: Replacing One Element Given List lst Element x Index i How to replace the element at index i in the list lst with the new element x? Solution Indexing You use simple indexing using the square bracket notation lst[i] = x to replace the element at index i in list lst with the … Read more
The next(iterator) function is one of Python’s built-in functions—so, you can use it without importing any library. It returns the next value from the iterator you pass as a required first argument. An optional second argument default returns the passed default value in case the iterator doesn’t provide a next value. Syntax: next(iterator, <default>) Arguments: … Read more
Summary: You can run multiple versions of Python on Windows using one of the following methods: Using entire path to execute the code. Creating A Shortcut or Symbolic Link to the executable files. Using Pylauncher: Use Shebang (#) in The Script Run Pylauncher Command Using Virtual Environments. ➠ Problem Formulation: You might have two versions … Read more
You can extract text from images with EasyOCR, a deep learning-based OCR tool in Python. EasyOCR performs very well on invoices, handwriting, car plates, and public signs. First released in 2007, PyTesseract [1] is the to-go library for extracting text from images. It uses classical computer vision methods to perform optical character recognition (OCR), then … Read more
Python’s IDLE code editor comes with every standard Python installation in Windows, Linux, and macOS. You can use it right out of the box after installing Python on your computer. Related Article: How to Install Python? IDLE has a useful syntax highlighting feature that highlights different Python language features to help you grasp source code … Read more
Python’s built-in iter() function returns an iterator for the given object. For example, iter([1, 2, 3]) creates an iterator for the list [1, 2, 3]. You can then iterate over all elements in the iterator, one element at a time, in a for or while loop such as: for x in iter([1, 2, 3]). Basic … Read more
Problem Formulation: How to check if all characters of a string are uppercase? Background: A string is a sequence of characters, and is amongst the most commonly used and popular data types in Python. Strings can be enclosed by either single or double quotes and are ‘immutable’, meaning they can’t be changed once created. There … Read more
Python’s built-in slice() function returns a new slice object you can use to slice over sequences such as lists, strings, or tuples. Read more about lists in our full tutorial about Python Slicing. Example 1: Slice with Stop Argument One of the best way to learn is by example! Here are some examples of how … Read more
Problem Formulation: What does the double colon string[::2] or sequence[3::4] mean in Python? >>> string[::2] You can observe a similar double colon :: for sequences: >>> lst = [1, 2, 3, 4, 5, 6, 7, 8, 9] >>> lst[::2] Answer: The double colon is a special case in Python’s extended slicing feature. The extended slicing … Read more
If you don’t protect your castle, they’ll come after you. From teaching thousands of freelancer students, we know that many freelance developers fear that unhappy clients come after their personal assets. Everyone makes mistake and these mistakes can become quite costly when submitting freelance work to a client. You may wonder: Can you protect against … Read more
Are you looking for the best way to become a professional Python developer? After reading this article, you will have a crystal clear plan for learning Python. You don’t need any programming skills for this plan to work. In short, you invest 70% of your learning time in practical projects and 30% in mastering the … Read more
Whether you are a beginner or a professional, dictionaries are an integral part of your programming journey, especially if you are coding in Python. Python dictionaries are all about key-value pairs which help you to perform your task. There are restrictions on dictionary keys, but values have none. Literally, anything can be a value. As … Read more