Return a JSON String Object from the json.dumps() Method The JSON (JavaScript Object Notation) format is widely used for transmitting structured data, especially between web applications. Fortunately, Python has several libraries for dealing with this data format, including the json module. The JSON format can nest data within “object literals” denoted by curly braces. Like … Read more
In this article, we’ll take a closer look at function calls in general, specifically internal function calls in Solidity. It’s part of our long-standing tradition to make this (and other) articles a faithful companion and a supplement of the official Solidity documentation. You can watch my explainer video on the topic here—I’ll talk about function … Read more
Problem Formulation 💬 Question: How do you write a function that returns a real Python error instead of an “error code” such as -1 or None in case something got wrong? For example, you may want to check the function input arguments for having the correct type or length (in the case of iterable arguments) … Read more
💬 Question: How can I return a Matplotlib axis, plot, or figure object in Python so I can set some defaults and plot a figure quickly based on those defaults? Basic Solution To return a Matplotlib object from a function, follow these steps: 👇 Create a function my_plot(x, y, …) with arguments to customize your … Read more
This quick tutorial will show you how to return a value from a nested function. I assume you have your reasons for doing so. However, a word of warning: ⚡ Attention: The main reason you want to create “nested functions”, i.e., inner and outer functions in Python, is to use them for closures and decorators. … Read more
Do you need to create a function that returns an integer value but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 🔥🔥🔥 A Python function can return any object. To return an integer, use the built-in int() function. Or create your own function with an arbitrary expression within the function body … Read more
💬 Question: How to return one or multiple arguments from a Python function? Basically, creating a function that reflects one or more arguments like a mirror: Let’s find out! 👇 Method 1: Return Single Argument A function can return a single argument by passing that argument variable after the return keyword. If the argument name … Read more
Do you need to create a function that returns a float 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 float value such as 3.14. To return a float, you can use the built-in float() function or create your own … Read more
💬 Question: What is the difference between return and break? When to use which? Let’s first look at a short answer before we dive into a simple example to understand the differences and similarities between return and break. Comparison Both return and break are keywords in Python. The keyword return ends a function and passes … Read more
💬 Question: How to return a global variable from a Python function. And how to return a local variable? First, have a look at the overview figure that shows how to return a local and global variable from a Python function using a simple example: Let’s dive into this example in more detail and answer … Read more
Do you need to create a function that returns a file 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 file object. To return a file, first open the file object within the function body, handle all possible errors if … 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