Informatics Practices
Assertion (A): Items in dictionaries are unordered.
Reasoning (R): You may not get back the data in the same order in which you had entered the data initially in the dictionary.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Explanation
In Python, items in dictionaries are unordered. Dictionaries do not maintain the order of elements as they are inserted. When retrieving data from a dictionary, the order of elements returned may not match the order in which they were inserted.
Related Questions
Assertion (A): Keys of the dictionaries must be unique.
Reasoning (R): The keys of a dictionary can be accessed using values.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): clear() method removes all elements from the dictionary.
Reasoning (R): len() function cannot be used to find the length of a dictionary.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Consider the code given below:
d={1: 'Amit', 2: 'Sumit', 5:'Kavita'} d.pop(1) print(d)The output will be:
Amit #item is returned after deletion {2: 'Sumit', 5: 'Kavita'}Reasoning (R): pop() method not only deletes the item from the dictionary but also returns the deleted value.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
What is a key-value pair in dictionary?