You are building a small reporting script for a Chicago sales team. The script accepts a formatting rule from a settings file, then applies it to each sales record. Before calling that rule, you need to know whether it is actually something Python can run. That is where the callable() function helps. I have used it in … Read more >>
When I build small reporting tools, I often need to create the same kind of object from different inputs. One report may come from a CSV file, another from a dictionary returned by an API, and another from values entered in the terminal. Creating separate setup code outside the class gets messy fast. The Python classmethod() function … Read more >>
When I build small automation scripts, I often create objects to hold temporary report data—such as a customer’s draft notes, an API token, or a calculated status. Once that information is no longer valid, I do not want it sitting on the object and getting reused accidentally. That is where the Python delattr() function helps. … Read more >>
When I build a small reporting script, I often need a fast way to organize related details. For example, an employee record may need a name, department, email, and monthly sales figure. Keeping those values in separate variables becomes messy quickly. That is where the Python dict() function helps. It creates a dictionary, which stores … Read more >>
When I build a small reporting script, I often receive an unfamiliar object from a library, API response, or custom class. I need to know what that object contains before I can use it safely. Rather than guessing method names or digging through code first, I use the Python dir() function. The dir() function gives … Read more >>
To check whether a Python dictionary contains a key, use in: "state" in customer returns True or False. It checks keys, not values, and it’s the fastest way to ask: Values, get(), several keys at once and nested JSON each have a catch, so I’ll walk through them with real output from Python 3.14.7. Check … Read more >>
As a Python developer working on a project for one of my clients, I recently encountered a situation where I needed to reverse the order of elements in a list. After researching and experimenting with different methods, I discovered several ways to achieve this task efficiently. In this tutorial, I will explain how to reverse … Read more >>
After spending years teaching Python at coding boot camps across California and working with data analysis teams at tech companies, I can tell you that counting occurrences in Python can be one of the fundamental skills that every programmer should know. In this comprehensive guide, I will walk you through seven different methods to count … Read more >>
As a Python developer, working on a project for an e-commerce analytics dashboard the sales where data comes as strings. I needed to convert Python string to double for further calculations like total revenue, average order value, etc. After researching various methods, I found several important methods to accomplish this task. I will share my … Read more >>
Recently in a Python webinar, someone asked me a question about removing multiple items from the list. After researching and experimenting with various methods I found several effective ways to accomplish this task. In this tutorial, I will explain how to remove multiple items from list in Python with suitable examples. Remove Multiple Items From … Read more >>
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