Python dictionaries are easy 📙

#python #tutorial #course

dictionary =  a collection of {key:value} pairs
ordered and changeable. No duplicates

capitals = {"USA": "Washington D.C.",
                   "India": "New Delhi",
                   "China": "Beijing",
                   "Russia": "Moscow"}

print(dir(capitals))
print(help(capitals))
print(capitals.get("Japan"))

if capitals.get("Russia"):
print("That capital exists")
else:
print("That capital doesn't exist")

capitals.update({"Germany": "Berlin"})
capitals.update({"USA": "Detroit"})
capitals.pop("China")
capitals.popitem()
capitals.clear()

keys = capitals.keys()
for key in capitals.keys():
print(key)

values = capitals.values()
for value in capitals.values():
print(value)

items = capitals.items()
for key, value in capitals.items():
print(f"{key}: {value}")