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Dictionaries

Learning Goals

Preparation for class:

Look over the slide show and take a look at 100 seconds of HTML. Also see Assignnment 06 page. There is a slideshow and code there.

Dictionaries

Some experiments with chatGPT on your assignments:​

Regular expression looking for items with periods.​

#Import the regular expression module. 

import re

films = ['hellraiser', 'it', 'nightmare on elm street', 'c.h.u.d.',
         'alien', 'nosferatu', 'halloween', 'jaws', 'e.t.', 'poltergeist']

intro_line = 'here is a list of fun movies to watch this Halloween season:'

# Print the intro line capitalized
print(intro_line.capitalize())

# Regex pattern to match titles with periods so that they will be capitalized.
pattern = r'\.' # the . must be escaped.

for movie in films:
    if re.search(pattern, movie):
        print(movie.upper())
    else:
        print(movie.title())

Looking for a letter...​

import re

animals = ['monkey', 'dog', 'raccoon', 'cat']

pattern = r'o'

for animal in animals:
    if re.search(pattern, animal):
        print(f'{animal.upper()} contains the pattern {pattern}')
    else:
        print(f'The pattern "{pattern}" is not in item {(animals.index(animal))}.')

Dictionary Phone numbers and count and percentage.​

import re

# Dictionary of random names and phone numbers
contacts = {
    'Smith, John': '919-555-1234',
    'Doe, Jane': '919-555-5678',
    'Johnson, Emily': '919-555-8765',
    'Brown, Michael': '919-555-4321',
    'Wilson, Sarah': '919-555-9999',
    'Taylor, David': '202-555-0123',
    'Anderson, Linda': '303-555-9876',
    'Thomas, Chris': '404-555-3456',
    'Jackson, Karen': '512-555-2345',
    'White, Daniel': '718-555-6543',
    'Harris, Patricia': '213-555-7890',
    'Martin, Robert': '415-555-1122',
    'Thompson, Michelle': '214-555-9988',
    'Garcia, James': '305-555-6655',
    'Martinez, Laura': '602-555-4433',
}

pattern = r'919'
count_919 = 0
count_non_919 = 0

for name, phone in contacts.items():
    if re.search(pattern, phone):
        print(f'{name} with phone {phone} contains the pattern {pattern}')
        count_919 += 1
    else:
        print(f'The pattern "{pattern}" is not in the phone number for {name}.')
        count_non_919 += 1

# Calculate the total and percentage
total_contacts = len(contacts)
percentage_919 = (count_919 / total_contacts) * 100 if total_contacts > 0 else 0

print(f'\nTotal count of non-919 phone numbers: {count_non_919}')
print(f'Total count of 919 phone numbers: {count_919}')
print(f'Percentage of 919 phone numbers: {percentage_919:.2f}%')