First commit

Author: Apress

4118.pdf

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+# Print out a date, given year, month, and day as numbers
+
+months = [
+    'January',
+    'February',
+    'March',
+    'April',
+    'May',
+    'June',
+    'July',
+    'August',
+    'September',
+    'October',
+    'November',
+    'December'
+]
+
+# A list with one ending for each number from 1 to 31
+endings = ['st', 'nd', 'rd'] + 17 * ['th'] \
+        + ['st', 'nd', 'rd'] +  7 * ['th'] \
+        + ['st']
+
+year    = raw_input('Year: ')
+month   = raw_input('Month (1-12): ')
+day     = raw_input('Day (1-31): ')
+
+month_number = int(month)
+day_number = int(day)
+
+# Remember to subtract 1 from month and day to get a correct index
+month_name = months[month_number-1]
+ordinal = day + endings[day_number-1]
+
+print month_name + ' ' + ordinal + ', ' + year

4119.pdf

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+# Split up a URL of the form http://www.something.com
+
+url = raw_input('Please enter the URL: ')
+domain = url[11:-4]
+
+print "Domain name: " + domain

978-1-59059-982-2/Chapter02/listing2-1.py

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+# Prints a sentence in a centered "box" of correct width
+
+# Note that the integer division operator (//) only works in Python
+# 2.2 and newer. In earlier versions, simply use plain division (/)
+
+
+sentence = raw_input("Sentence: ")
+
+screen_width = 80
+text_width   = len(sentence)
+box_width    = text_width + 6
+left_margin  = (screen_width - box_width) // 2
+
+print
+print ' ' * left_margin + '+'   + '-' * (box_width-2)  +   '+'
+print ' ' * left_margin + '|  ' + ' ' * text_width     + '  |'
+print ' ' * left_margin + '|  ' +       sentence       + '  |'
+print ' ' * left_margin + '|  ' + ' ' * text_width     + '  |'
+print ' ' * left_margin + '+'   + '-' * (box_width-2)  +   '+'
+print

978-1-59059-982-2/Chapter02/listing2-2.py

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+# Check a user name and PIN code
+
+database = [
+    ['albert',  '1234'],
+    ['dilbert', '4242'],
+    ['smith',   '7524'],
+    ['jones',   '9843']
+]
+
+username = raw_input('User name: ')
+pin = raw_input('PIN code: ')
+
+if [username, pin] in database: print 'Access granted'

978-1-59059-982-2/Chapter02/listing2-3.py

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+# Print a formatted price list with a given width
+
+width = input('Please enter width: ')
+
+price_width = 10
+item_width = width - price_width
+
+header_format = '%-*s%*s'
+format       = '%-*s%*.2f'
+
+print '=' * width
+
+print header_format % (item_width, 'Item', price_width, 'Price')
+
+print '-' * width
+
+print format % (item_width, 'Apples', price_width, 0.4)
+print format % (item_width, 'Pears', price_width, 0.5)
+print format % (item_width, 'Cantaloupes', price_width, 1.92)
+print format % (item_width, 'Dried Apricots (16 oz.)', price_width, 8)
+print format % (item_width, 'Prunes (4 lbs.)', price_width, 12)
+
+print '=' * width

978-1-59059-982-2/Chapter02/listing2-4.py

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+# A simple database
+
+# A dictionary with person names as keys. Each person is represented as
+# another dictionary with the keys 'phone' and 'addr' referring to their phone
+# number and address, respectively.
+
+people = {
+
+    'Alice': {
+        'phone': '2341',
+        'addr': 'Foo drive 23'
+    },
+
+    'Beth': {
+        'phone': '9102',
+        'addr': 'Bar street 42'
+    },
+
+    'Cecil': {
+        'phone': '3158',
+        'addr': 'Baz avenue 90'
+    }
+
+}
+
+# Descriptive labels for the phone number and address. These will be used
+# when printing the output.
+labels = {
+    'phone': 'phone number',
+    'addr': 'address'
+}
+
+name = raw_input('Name: ')
+
+# Are we looking for a phone number or an address?
+request = raw_input('Phone number (p) or address (a)? ')
+
+# Use the correct key:
+if request == 'p': key = 'phone'
+if request == 'a': key = 'addr'
+
+# Only try to print information if the name is a valid key in
+# our dictionary:
+if name in people: print "%s's %s is %s." % \
+    (name, labels[key], people[name][key])

978-1-59059-982-2/Chapter03/listing3-1.py

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+# A simple database using get()
+
+# Insert database (people) from Listing 4-1 here.
+
+labels = {
+    'phone': 'phone number',
+    'addr': 'address'
+}
+
+name = raw_input('Name: ')
+
+# Are we looking for a phone number or an address?
+request = raw_input('Phone number (p) or address (a)? ')
+
+# Use the correct key:
+key = request # In case the request is neither 'p' nor 'a'
+if request == 'p': key = 'phone'
+if request == 'a': key = 'addr'
+
+# Use get to provide default values:
+person = people.get(name, {})
+label = labels.get(key, key)
+result = person.get(key, 'not available')
+
+print "%s's %s is %s." % (name, label, result)

978-1-59059-982-2/Chapter04/listing4-1.py

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+# hello.py
+print "Hello, world!"