what is a dictionary?

A dictionary also known as a Mapping is a way to keep key-value pairs, the values can be any Python object. I add tests to see which of the Python basic data types I can use as keys .

I think this is the most important data structure because it can hold all the other data structures, same as with lists and tuples but with more. In programming I have had to work with JSON which I can read and write as dictionaries

questions about dictionaries

Here are questions you can answer after going through this chapter

what is a dictionary?
how can I empty a dictionary?
how can I copy a dictionary
how can I make a dictionary from an iterable?
how can I get a value that is in a dictionary?
how can I look at the key-value pairs in a dictionary as a list of tuples?
how can I look at only the keys in a dictionary?
how can I remove a key-value pair from a dictionary?
how can I remove the last key-value pair from a dictionary?
how can I add a key with a default value to a dictionary?
how can I update a dictionary?
how can I add the key-value pairs from one dictionary to another?
how can I look at only the values in a dictionary?
what causes KeyError?

the chapters

dictionaries
make a calculator 7

code from the chapter

Do you want to see all the CODE I typed in these chapter?

what is next?

dictionaries
how to make a calculator 7

rate pumping python

If this has been a 7 star experience for you, please CLICK HERE to leave a 5 star review of pumping python. It helps other people get into the book too

functions 3

dictionaries