For a feature I build I needed a simple way to reverse the direction the for-statement iterates through a list. As it turns out, Python has a built-in function called reversed() that does exactly that.
When you use a Python script to automate things, you may not always want to stay in the directory you run your script from. Let us look how we can change the current working directory and save a lot of typing.
The usual way to pick a random item from a list is to generate a random number and pick the item at this position. That is how I would do it in C#. In Python we have much better ways to achieve that.
Sometimes you need some random numbers for your application. Python offers a nice built-in random number generator with a lot of functionality to solve this problem.
Python is not the fastest programming language, but sometimes your code may still run too fast. Let us look how we can tell Python to take a break.
We need pytest and other dependencies only while we develop our application, but not when we run them in production. Is there a way that allows us to track the dependencies but not install all of them all the time?
Yield is a funny little keyword that allows us to create functions that return one value at a time. Let us look how yield works and how we can use it to create a generator.
Decorators are an interesting concept in Python. We use them in Flask to configure routing, but they are not limited to this use case. Let us find out what we can do with them and how they work.
If you want to create a list from the values of another list, you most likely will write a for loop. That works and is how you would solve this exercise in any other language. However, there is a more pythonic way to do it called list comprehension.
I constantly run into the problem that I cannot remember what methods exist on an object. If you have the same problem in the interactive prompt, then the built-in function dir() can help you.