Python_Dictionaries.py

# 1) Set the emails variable to be an empty dictionary
emails ={}

assert emails == {}, f"Expected `emails` to be {{}} but got: {repr(emails)}"

# 2) Add 'ashley', 'craig', and 'elizabeth' to the emails dictionary without reassigning the variable.

emails['ashley'] = 'ashley@example.com'
emails['craig'] = 'craig@example.com'
emails['elizabeth'] = 'elizabeth@example.com'
 
assert emails == {
    "ashley": "ashley@example.com",
    "craig": "craig@example.com",
    "elizabeth": "elizabeth@example.com",
}, f"Expected `emails` to be {{'ashley': 'ashley@example.com', 'craig': 'craig@example.com', 'elizabeth': 'elizabeth@example.com'}} but got: {repr(emails)}"

# 3) Remove 'craig' from the emails dictionary without reassigning the variable.
del emails['craig']

assert emails == {
    "ashley": "ashley@example.com",
    "elizabeth": "elizabeth@example.com",
}, f"Expected `emails` to be {{'ashley': 'ashley@example.com', 'elizabeth': 'elizabeth@example.com'}} but got: {repr(emails)}"

# 4) Add 'dalton' to the emails dictionary without reassigning the variable.
emails['dalton'] = 'dalton@example.com'

assert emails == {
    "ashley": "ashley@example.com",
    "elizabeth": "elizabeth@example.com",
    "dalton": "dalton@example.com",
}, f"Expected `emails` to be {{'ashley': 'ashley@example.com', 'elizabeth': 'elizabeth@example.com', 'dalton': 'dalton@example.com'}} but got: {repr(emails)}"

# 5) Return a list of keys from the emails dictionary as `users`
users = list(emails.keys())

assert users == [
    "ashley",
    "elizabeth",
    "dalton",
], f"Expected `users` to be ['ashley', 'elizabeth', 'dalton'] but got: {repr(users)}"

# 6) Return a list of values from the emails dictionary as `email_list`
email_list = list(emails.values())

assert email_list == [
    "ashley@example.com",
    "elizabeth@example.com",
    "dalton@example.com",
], f"Expected `email_list` to be ['ashely@example.com', 'elizabeth@example.com', 'dalton@example.com'] but got: {repr(email_list)}"

# 7) Return a list of tuples called `pairs` representing the key/value pairs in `emails`.
pairs = list(emails.items())

assert pairs == [
    ("ashley", "ashley@example.com"),
    ("elizabeth", "elizabeth@example.com"),
    ("dalton", "dalton@example.com"),
], f"Expected `pairs` to be [('ashley', 'ashley@example.com'), ('elizabeth', 'elizabeth@example.com'), ('dalton', 'dalton@example.com')] but got: {repr(pairs)}"