Complete Python Scripting for Automation - Dictionaries

The video tutorial covers Python dictionaries, explaining their structure, how to define and access them, and various operations like clear, copy, update, pop, and set default. It also discusses the order of dictionaries in different Python versions, highlighting changes from unordered to ordered collections in version 3.7.

What is the correct way to define a dictionary in Python?

• Using square brackets

• Using angle brackets

• Using curly braces

• Using parentheses

How can you access a value in a dictionary?

• By using the length

• By using the value

• By using the key

• By using the index

What happens if you try to access a key that doesn't exist in a dictionary using the get method?

• It returns None

• It returns the first key

• It returns an empty string

• It raises a KeyError

Which method is used to remove all items from a dictionary?

• clear()

• remove()

• delete()

• erase()

What does the pop method do in a dictionary?

• Removes a random key-value pair

• Removes the first key-value pair

• Removes a key-value pair by key

• Removes all key-value pairs

How does the copy method affect a dictionary?

• It creates a reference to the original dictionary

• It creates a shallow copy of the dictionary

• It creates an empty dictionary

• It creates a deep copy of the dictionary

What is the purpose of the fromkeys method?

• To sort keys in a dictionary

• To update keys in a dictionary

• To remove keys from a dictionary

• To create a dictionary with specified keys and default values

What does the setdefault method do if the key is already present in the dictionary?

• It updates the value of the key

• It removes the key

• It raises an error

• It leaves the value unchanged

How did the nature of dictionaries change in Python 3.7?

• They became unordered

• They became case-sensitive

• They became ordered

• They became immutable

In Python 3.7 and later, how is the order of items in a dictionary determined?

• By the hash value of the keys

• By the length of the keys

• By the alphabetical order of the keys

• By the order of insertion