31.Dictionaries

d = { 'Name': 'Thanos',
        'Dialogue': "I'm inevitable",
        'Power': 'destruction',
        'Killed': 'Many',
        'Number' : 4
    }
    
print(type(d))
#Output: <class 'dict'>

print(d['Dialogue'])
#Output: I'm inevitable

print(d['Number'])
#Output: 4

d[len(d)+1] = 'Ironman'
print(d)
#Output: {'Name': 'Thanos', 'Dialogue': "I'm inevitable", 'Power': 'destruction', 'Killed': 'Many', 'Number': 4, 6: 'Ironman'}

d[6] = 'Batman'
print(d[6])
#Output: Batman

#Dictionary methods

print(len(d))       #Length of the dictionary
#Output: 6

print(any({':','2:'}))
#Output: True

d1 = { 2: "Batman",
        3: "Superman",
        1: "Wonderwomen"
    }
    
print(sorted(d1))
#Output: [1, 2, 3]

print(sorted(d1.items()))
#Output: [(1, 'Wonderwomen'), (2, 'Batman'), (3, 'Superman')]

print(d1.items())       #Returns key-value pair as a tuple
#Output: dict_items([(2, 'Batman'), (3, 'Superman'), (1, 'Wonderwomen')])

print(d1.keys())        #Returns list of all keys in a dictionary
#Output: dict_keys([2, 3, 1])

print(d1.values())      #Returns list of all values in a dictionary
#Output: dict_values(['Batman', 'Superman', 'Wonderwomen'])

print(d1.get(3))        #Returns value of specific key
#Output: Superman

d1.update({3: 'Aquaman'})               #Updates the value of existing key or adds a new key-value pair if key doesn't exists
print(d1.get(3))
#Output: Aquaman

print(d1.setdefault(2, "Dr.Strange"))   #Gives the value of specified key
#Output: Batman

d1.setdefault(4, "Falsh")               #If key doesn't exists, insert the key with specified value
print(d1)
#Output: {2: 'Batman', 3: 'Aquaman', 1: 'Wonderwomen', 4: 'Falsh'}

print(d1.popitem())                     #Removes last key-value pair
#Output: (4, 'Falsh')

c = d1.pop(1)                           #Removes the item specified by the key
print(c)
#Output: Wonderwomen

print(d1)
#Output: {2: 'Batman', 3: 'Aquaman'}