Dictionaries are collections of key-value pairs. Each key in a dictionary is unique and maps to a value. Dictionaries are created using curly braces {} or the dict() function.
# Creating a dictionary of names and ages
my_dict = {"Alice": 25, "Bob": 30, "Charlie": 35}
# Creating a dictionary of stock prices
stock_prices = {"AAPL": 135.39, "GOOG": 2066.76, "MSFT": 231.60, "AMZN": 3113.59}
In this dictionary, each key is a stock ticker symbol (e.g. “AAPL” for Apple) and each value is the current stock price for that company. You could access the stock price for a particular company like this:
print(stock_prices["AAPL"])
This would output “135.39”, which is the current stock price for Apple. You could also add new stock prices to the dictionary like this:
stock_prices["TSLA"] = 597.95
And you could remove a stock price like this:
del stock_prices["MSFT"]
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