Python Dictionary Quiz

1. What does the dict.popitem() method do?

2. Which method removes a specified key and its associated value from a dictionary, returning the value, and raising a KeyError if the key is not found?

3. When you use dict1.copy() to create dict2 = dict1.copy(), what kind of copy is created?

4. Select the correct ways to get the value of marks key.

student = {
  "name": "Emma",
  "class": 9,
  "marks": 75
}

5. Dictionary keys must be immutable

6. What will be the output of the following Python code?

mapping = dict(zip(['one', 'two'], [1, 2]))
print(mapping)

7. What is the primary use case for the dict.setdefault(key, default_value) method?

8. Is Below statement True?

Items are accessed by their position in a dictionary and All keys in a dictionary must be of the same type.

9. Select the correct way to access the value of a history subject

sampleDict = { 
   "class":{ 
      "student":{ 
         "name":"Mike",
         "marks":{ 
            "physics":70,
            "history":80
         }
      }
   }
}

10. Please the correct way to empty following dictionary

student = { 
  "name": "Emma", 
  "class": 9, 
  "marks": 75 
}

11. What will be the output of the following Python code?

my_dict = {"a": 1, "b": 2}
value = my_dict.pop("b")
print(value)
print(my_dict)

12. What happens if you try to add a new key-value pair to a dictionary where the key already exists?

13. Which operator or method is typically used to merge two dictionaries in Python (from Python 3.9 onwards)?

14. In Python, Dictionaries are immutable

15. Which of the following is NOT a valid way to create a Python dictionary?

16. What do dict.keys(), dict.values(), and dict.items() return in Python 3?

17. Select correct ways to create an empty dictionary

18. What will be the output of the following Python code?

my_dict = {"a": 1, "b": 2}
my_dict["c"] = 3
print(my_dict["a"])

19. What will be the output of the following Python code?

grades = {"Math": 90, "Science": 85, "English": 92}
for subject in grades:
    print(subject)

20. What will be the output of the following Python code?

config = {"theme": "dark", "font_size": 12}
config.setdefault("language", "en")
config.setdefault("theme", "light") # Already exists
print(config)

21. Select all correct ways to copy a dictionary in Python

22. What will be the output of the following Python code?

data = {"name": "Alice", "age": 30}
print("name" in data)
print("city" in data)

23. What will be the output of the following Python code?

d1 = {"a": 1, "b": 2}
d2 = {"b": 3, "c": 4}
d1.update(d2)
print(d1["b"])

24. What will be the output of the following Python code?

profile = {"name": "John", "age": 25, "city": "New York"}
keys = list(profile.keys())
keys.sort()
print(keys[0])

25. In Python 3.7 and later, what is the behavior regarding dictionary key order?