Practical Data Science using Python - Python Dictionaries 1
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Information Technology (IT), Architecture
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary reason keys in a Python dictionary must be unique?
To enable faster computation
To allow duplicate values
To prevent confusion when accessing elements
To ensure values are mutable
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a valid way to create a dictionary in Python?
Using angle brackets
Using parentheses
Using square brackets
Using curly braces
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you create a dictionary from a list of tuples?
By using the list() function
By using the dict() function
By using the set() function
By using the tuple() function
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct way to access a value in a nested dictionary?
Using the index of the value
Using only the nested key
Using only the outer key
Using both the outer and nested keys
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to add a new key-value pair to an existing dictionary?
add()
update()
insert()
append()
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when you use the del statement on a dictionary key?
The specified key-value pair is removed
The dictionary is cleared
The key is set to None
The entire dictionary is deleted
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you handle a KeyError when accessing a dictionary?
By using a print statement
By using a for loop
By using a while loop
By using a try-except block
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