Python dictionaries manipulation copy() | keys() | values() | update() & nested dictionaries

How do we define dictionary?, How do I check values for any key?, How do I add values to the dictionary?, How to get values?, How do I check for a key?, How to add, remove and change items in dictionary?, How do we copy dictionary?, What is nested dictionary?, How do I clear/empty my dictionary? Py file - https://drive.google.com/file/d/1XGas... Jupyter file - https://drive.google.com/file/d/1XGas... Video links for all the mentioned ones Python data types video link -    • Python List Iteration / Comprehension - Fo...   Python List Manipulation video link -    • Python List Manipulation - Insert | Append...   Python List Iteration / Comprehension -    • Python List Iteration / Comprehension - Fo...   Python Operators -    • Python Operators - Arithmetic | Comparison...   Python Strings -    • Python String Manipulation- Slicing | uppe...