Python Tutorial for Beginners 5: Dictionaries - Working with Key-Value Pairs

In this Python Beginner Tutorial, we will begin learning about dictionaries. Dictionaries allow us to work with key-value pairs in Python. We will go over dictionary methods, how to add and remove values, and also how to loop through the key-value pairs. Let's get started.
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[@1cannon3]

0:07 - Terminology 0:14 - Key/Value pairs definition 0:37 - First example (Student using a dictionary) 0:45 - { }, Dict notation, curly braces, 0:50 - adding elements 1:32 - [ ] Square bracket access of the dict 2:04 - Dict items can be many things, they’re not bound to one “type” 2:14 - Keys can be any immutable data type 2:24 - Example of an Integer being the key 2:44 - Accessing a key that does not exist 3:00 - Alternative to “throwing an error” if a key does not exist 3:05 - Sometimes you will want to return None or a default value if key does not exist 3:09 - .get( ) access of the dict 3:30 - accessing a key that does not exist with the .get method as opposed to [ ] square bracket access 3:40 - Specifying a default value for keys that do not exist 4:01 - Adding a new entry to dictionary 4:30 - Changing/updating values via key access 5:02 - Changing/updating values via .update() method 5:21 - .update() takes in a dict as an argument 5:57 - Deleting a specific key and its value 6:01 - Option 1 for deleting a key and value: del keyword 6:26 - Option 2 for removing a key and value: .pop() method 6:30 - Remember the .pop() method not only removes the item put pops it off or returns it to you 6:35 - Therefore you can recover the popped item with a variable assignment 7:07 - How to loop through all the keys and values 7:13 - Finding out the number of keys in dict with len() function 7:30 - Print all keys with .keys() method 7:39 - Print all values with .values() method 7:47 - Print both keys and values with .items() method 8:07 - Looping is slightly different then lists because dicts are concerned with pairs (Key : Value) 8:33 - How to loop through keys AND values

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