Working with files in Python is pretty easy. But there’s a common mistake that can sneak into your code. Not closing the file ...

Clicking the up arrow key will show previously typed commands. To clear the output on Console, use Ctrl-L. To clear all global variables and restart the Python interpreter (in general, it is Python 1) ...

lru_cache basics To memoize a function in Python, we can use a utility supplied in Python’s standard library—the functools.lru_cache decorator. lru_cache isn’t hard to use.

The dictionary functions in a similar fashion to the Python list, in that it is a collection of data. In this case, however, dictionaries hold key-value pairs instead of single values.