Python Dictionary Test

1. What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}

40 and 45

d = (40:"john", 45:"peter")

"john" and "peter"

"john", 40, 45, and "peter"

2. What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}
print(list(d.keys()))

["john", "peter"]

("john", "peter")

("john":40, "peter":45)

["john":40, "peter":45]

3. Suppose d = {"john":40, "peter":45}, to delete the entry for "john" what command do we use?

d.delete("john":40)

del d("john":40)

del d["john"]

d.delete("john")

4. What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}
"john" in d

Error

False

None

True

5. What will be the output of the following Python code snippet?

d1 = {"john":40, "peter":45}
d2 = {"john":466, "peter":45}
d1 == d2

None

Error

False

True

6. Which of the following statements create a dictionary?

d = {}

d = {40:"john", 45:"peter"}

All of the mentioned

d = {"john":40, "peter":45}

7. Suppose d = {"john":40, "peter":45}, what happens when we try to retrieve a value using the expression d["susan"]?

Since "susan" is not a value in the set, Python raises a KeyError exception

It is executed fine and no exception is raised, and it returns None

Since "susan" is not a key in the set, Python raises a KeyError exception

Since "susan" is not a key in the set, Python raises a syntax error

8. What will be the output of the following Python code snippet?

d = {"john":40, "peter":45}
d["john"]

"peter"

"john"

9. Suppose d = {"john":40, "peter":45}. To obtain the number of entries in dictionary which command do we use?

d.size()

len(d)

size(d)

d.len()

10. What will be the output of the following Python code snippet?

d1 = {"john":40, "peter":45}
d2 = {"john":466, "peter":45}
d1 > d2

None

Error

True

False