Keys in dictionaries. A Python dictionary key can be nearly any Python object. I say “nearly” because the object in question must be hashable, meaning that it must have a hash value (the ...

In a key-value pair, each key, which can be anything including words, has an associated value. So, for example, the key "Father" could have a value of "Bob." Or, more relevantly, a key of "Hits ...

Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.