ChrisOverview 🌞 Do you encounter this stupid error? TypeError: ‘builtin_function_or_method’ object is not subscriptable You’re not alone—thousands of coders like you experience this error in thousands of projects every month. This short tutorial will show you exactly why this error occurs, how to fix it, and how to never make the same mistake again. So, … Read more
Understanding the pprint() Function in Python You may know the pprint module and its pprint() function to pretty print a string, dictionary, set, or list. If not, feel free to watch the following video and read the associated tutorial on the Finxter blog: 👉 Recommended Tutorial: Python pprint – A Simple Guide to Pretty Printing … Read more
On this page, I’ll collect selected reader feedback for my newest book 📕 “The Art of Clean Code” (Amazon, NoStarch). I’ll only share the feedback from readers who explicitly agreed to publish it here. 👉 Want to Get Featured Here? Feel free to send in your feedback by replying to any of my emails. “Cannot … Read more
Do you encounter the following error message? TypeError: ‘dict_values’ object is not subscriptable You’re not alone! This short tutorial will show you why this error occurs, how to fix it, and how to never make the same mistake again. So, let’s get started! Solution Python raises the “TypeError: ‘dict_values’ object is not subscriptable” if you … Read more
Do you encounter the following error message? TypeError: ‘dict_keys’ object is not subscriptable You’re not alone! This short tutorial will show you why this error occurs, how to fix it, and how to never make the same mistake again. So, let’s get started! Solution Python raises the “TypeError: ‘dict_keys’ object is not subscriptable” if you … Read more
Problem Formulation Say, you have a function create_df() that creates a DataFrame from some data that may be read from a CSV file, the web, or from another variable in the code (e.g., a nested list)—doesn’t matter. You want to return the DataFrame to the caller of the function at runtime. ⚡ However, the code … Read more
Do you need to create a function that returns a NumPy array but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 🚀 A Python function can return any object such as a NumPy Array. To return an array, first create the array object within the function body, assign it to a … Read more
Question 💬 Question: Can you use lists as values of a dictionary in Python? This short article will answer your question. So, let’s get started right away with the answer: Answer You can use Python lists as dictionary values. In fact, you can use arbitrary Python objects as dictionary values and all hashable objects as … Read more
Method 1: Return a New Empty List Using Square Brackets You can return an empty new list from a Python function using the square bracket notation [] after the return keyword using the expression return []. Here’s an example: The example also shows that the two created empty lists using two function calls point to … Read more
Do you need to create a function that returns a Boolean (True or False) but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 🔥🔥🔥 A Python function can return any object such as a Boolean value (True or False). To return a Boolean, you can have an arbitrary simple or complex … Read more
Do you need to create a function that returns a string but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 🚀 A Python function can return any object such as a string. To return a string, create the string object within the function body, assign it to a variable my_string, and … Read more
Problem Formulation and Solution Overview If you print dictionary keys using print(dict.keys()), Python returns a dict_keys object, i.e., a view of the dictionary keys. The representation prints the keys enclosed in a weird dict_keys(…) wrapper text, e.g., dict_keys([1, 2, 3]). Here’s an example: There are multiple ways to change the string representation of the keys, … Read more