sfpl-classroom-005.py

#!/usr/bin/env python
# San Francisco Public Library - Learn, Design and Build Software!
#
# Sample program created by Louis Rawlins ([email protected])
# Copyright 2016, Bonfire School, covered under GPLv3
#

# Show gopher as a historical example.
# These were faster systems, Merlin, etc
# Time and fashion changes how we look for things
# Some good, some bad -- I wouldn't want to take cover photos away, 
# but I do miss the speed of searching

# Concepts to cover:
# - Variables (assignment, comparison)
# - Types (string, integer)
# - Print (string, integer)
# - Input (type conversion)
# - Lists (storage, retreival, array notation)
# - Conditionals (if, else, while, for)
# - Functions (definition, calling)

# STUB - Lists of strings
books_with_titles = [
    'Where the Wild Things Are',
    'Over in the Meadow',
    'Goodnight Moon',
    'Little Bear',
    'The Giving Tree'
]

# EXTRA - Lists of lists
# - How could you use this information?
# - What might be challenging, compared to books_with_titles?
# books_with_dates_and_authors = [
#     ('Where the Wild Things Are', 'Maurice Sendak', 1963),
#     ('Over in the Meadow', 'Ezra Jack Keats', 1971),
#     ('Goodnight Moon', 'Margaret Wise Brown', 1947),
#     ('Little Bear', 'Else Holmelund Minarek', 1957),
#     ('The Giving Tree', 'Shel Silverstein', 1964)
# ]

# STUB - Function Definition
def greeting():
    # We use the print function to display our interface to the user.
    # - What does '\n' mean and why is it useful?
    # - How could we improve this menu?
    print('\n--------------------------------------------------------------------------------')
    print('San Francisco Public Library - Children\'s Book Catalog')
    print('--------------------------------------------------------------------------------\n')
    print('What would you like to do?\n')
    print('  1. List all books')
    print('  2. Search books by title')
    print('  3. Exit')

# STUB - Function Calls
greeting()

# STUB - Conditional Statements
while True:
    user_choice = input('\nPlease select (? for help): ')

    # STUB - Conditional Statements: if, elif and else
    if user_choice == '1':
        # How could we improve the readability of this book list?
        print('\n--------------------------------------------------------------------------------')
        print('All books')
        print('--------------------------------------------------------------------------------')
        for item in books_with_titles:
            print('  - ' + item)

    elif user_choice == '2':
        print('\n--------------------------------------------------------------------------------')
        print('Search books by title')
        print('--------------------------------------------------------------------------------')
        search_term = input('Enter title to search: ')
        matching_books = []

        print('\n--------------------------------------------------------------------------------')
        print('Search results for "' + search_term + '"')
        print('--------------------------------------------------------------------------------')
        for item in books_with_titles:
            # Search is case sensitive.
            # - What happens when you search for "the" or "The"?
            # - How could you change this to find both?
            if search_term in str(item):
                title_position = books_with_titles.index(item)
                matching_books.append(books_with_titles[title_position])

        if matching_books == []:
            print('No Results\n')
        else:
            for item in matching_books:
                print('  - ' + item)

    elif user_choice == '3':
        break
    else:
        greeting()

###