How to Fix “ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()”

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

How to Access an Object Attribute Given the Attribute Name as a String?

You may know the following problem: You have an object’s attribute name as a string—say, you’ve read it from a file—and you want to access the attribute with the given name. But you cannot use the syntax object.”attribute” because the dot notation only allows for name-access like this: object.attribute. How do you resolve this problem? … Read more

How to resolve “TypeError: can only concatenate str (not β€œint”) to str” in Python?

Many beginner programmers have a problem with the so-called TypeError, they wonder what they are doing wrong. Here’s an example: Exercise: Run the script and reproduce the error! Study this article to learn how to fix it! This article will answer every question that beginners may ask about this topic. About The TypeError Before showing … Read more