🐍 Dictionary

list

Good to know

⭐️ Dictionaries store key–value pairs. Keys must be unique, values can repeat.

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Creating a Dictionary

monthConversions = {
    "Jan": "January",
    "Feb": "February",
    "Mar": "March",
    "Apr": "April",
    8: "August"      # keys can also be numbers
}

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Manipulating Dictionary

Accessing Values

⭐️ .get() is safer: it avoids errors when the key is missing.

monthConversions["Feb"]           # → 'February'
monthConversions.get("Feb")       # → 'February'
monthConversions.get("GG")        # → None
monthConversions.get("GG", "Not available")
# → 'Not available'

Useful Dictionary Methods

shortcuts = {
    "DE": "Germany",
    "CH": "Switzerland",
    "P": "Portugal"
}
 
shortcuts.keys()        # → all keys
shortcuts.values()      # → all values
shortcuts.items()       # → key/value pairs
 
shortcuts.update({"E": "Spain"})      # add new pair
shortcuts.update({"CH": "Schweiz"})   # overwrite existing value
 
shortcuts.pop("P")      # remove key 'P'
shortcuts.clear()        # empty the dictionary

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Looping Through a Dictionary

Find here how to loop through a dictionary: Looping Through a Dictionary

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**Using kwargs (Arguments Stored as a Dictionary)

kwargs collects named arguments into a dictionary.