Page 210 -

hashes and databases

Your Programming Toolbox

You’ve got Chapter 5 under your belt.
Let’s look back at what you’ve learned
in this chapter: CHAPTER 5

Programming T ools

* hash - a data structure that
associates a name with a value

* s[‘age'] - retrieve the value
associated with the ‘age' name in a

hash called ‘s'
* returning a data structure from a

function Python T ools
* database system - a technology, * {} - an empty hash
like SQLite3, that can store large
quantities of data in a very efficient

way * s[‘wind'] = “off shore" - sets that value
associated with “wind” in the “s” hash to the
value “off shore”

* s.keys() - provide a list of keys for the
hash called ‘s'

* s.items() - provide a list of keys AND values
for the hash called ‘s'

* line.split(“,") - split the string contained
within the ‘line' variable at every occurrence of
a comma

* sorted() - a built-in function that can sort
most data structures

you are here 4 175