Dictionary and string

Which of the following statements create a dictionary?

• d = {}

• d = {“john”:40, “peter”:45}

• d = {40:”john”, 45:”peter”}

• All of the mentioned

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

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

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

d1 == d2

• True

• False

• None

• Error

What is the output of the following piece of code?

a={1:"A",2:"B",3:"C"}

print(a.get(1,4))

• 1

• 4

• A

• invalid

What will be the output of above Python code?

d1={"abc":5,"def":6,"ghi":7}

print(d1[0])

• abc

• 5

• {"abc":5}

• Error

What will be the result of above Python code?

dict={"Joey":1,"Rachel":2}

dict.update({"Phoebe":2})

print(dict)

• {"Joey":1,"Rachel":2,"Phoebe":2}

• {"Joey":1,"Rachel":2}

• {"Joey":1,"Phoebe":2}

• Error

Which of the following is False regarding dictionary in Python?

dict={"Joey":1,"Rachel":2}

dict.update({"Phoebe":2})

print(dict)

• Values of a dictionary can be string,integers or combination of both.

• Keys of a dictionary can be string,integers or combination of both

• The value of a dictionary can be accessed with the help of indices.

• None of the above

Which of the following will delete key_value pair for key="tiger" in dictionary?

dic={"lion":"wild","tiger":"wild","cat":"domestic","dog":"domestic"}

• del dic["tiger"]

• dic["tiger"].delete()

• delete(dic.["tiger"])

• del(dic.["tiger"])

Which of the following will give error?

Suppose dict1={"a":1,"b":2,"c":3}

• print(len(dict1))

• print(dict1.get("b"))

• dict1["a"]=5

• None of these.

Which of the following Python codes will give same output if

(i) dict.pop("book")

(ii) del dict["book"]

(iii) dict.update({"diary":1,"novel":5})

dict={"diary":1,"book":3,"novel":5}

• i, ii, iii

• i, ii

• i, iii

• ii, ii

What will be the following Python code?

dict1={"a":10,"b":2,"c":3}

str1=""

for i in dict1:

str1=str1+str(dict1[i])+" "

str2=str1[:-1]

print(str2[::-1])

• 3, 2

• 3, 2, 10

• 3, 2, 01

• Error