dictionary

Author: hashfx

DSA-Python/DataStructures/dictionary.py

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+''' 
+DICTIONARY
+    Dictionaries are used to store key-value pairs which are mutable, or changeable, and ordered.
+'''
+
+#empty dictionary
+dict = {} 
+print("This is an empty Dictionary ", dict, end="\n\n")
+
+#dictionary with elements
+dict = {
+    1: 'Python', 'Two': 'Java', 3: 'Swift',
+    } 
+print("Elements of dictionary are \n", dict, end="\n\n")
+
+
+''' Adding Elements '''
+
+print("**********Adding Elements**********")
+
+#changing element
+dict[3] = 'C++' 
+print(f"Changed 3rd element \n {dict}", end="\n\n")
+
+#adding key-value pair
+dict['Fourth'] = 'Swift' 
+print("Added element \n", dict, end="\n\n")
+
+
+''' Accessing Elements '''
+
+print("**********Accessing Elements**********")
+
+#access elements using keys
+print("First element is ", dict[1], end="\n\n") 
+print("Fourth Element is ", dict.get('Fourth'), end="\n\n")
+
+#get keys
+print(f"Keys of the dictionary are \n{dict.keys()}", end="\n\n") 
+
+#get values
+print(f"Values of the dictionary are \n{dict.values()}", end="\n\n") 
+
+#get key-value pairs
+print(f"Dictionary is \n{dict.items()}", end="\n\n") 
+
+
+''' Deleting Elements '''
+
+print("**********Deleting Elements**********")
+
+#pop element
+a = dict.pop('Fourth') 
+print(f"Deleted {a} \nNew dictionary {dict}", end="\n\n")
+
+#pop the key-value pair
+b = dict.popitem() 
+print(f"Popped {b} \nNew dictionary {dict}", end="\n\n")
+
+#empty dictionary
+dict.clear() 
+print(f"Cleared dictionary {dict}", end="\n\n")
+