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Which data type is used to store a collection of items, where each item is indexed by a key? Which data type in Python is used to store a collection of items, where each item is indexed by a key? Which of the following statements about Python strings is true? What will be the output of the following code snippet?<br>x = {"a": 1, "b": 2}<br>y = {"b": 3, "c": 4}<br>z = {**x, **y}<br>print(z) What is the output of the following code snippet?<br>x = 3.14<br>print(type(x)) Which data type in Python is used to store a sequence of characters? What is the output of the following code snippet?<br>x = [1, 2, 3]<br>y = x.copy()<br>x.append(4)<br>print(y) Which data type in Python is immutable? Which data type in Python is mutable? Which data type is used to store a collection of items, where each item is indexed by a numerical index?

QUESTIONS

Which data type is used to store a collection of items, where each item is indexed by a key?

Right Answer:

Dictionaries in Python are used to store collections of items where each item is indexed by a key.

Which data type in Python is used to store a collection of items, where each item is indexed by a key?

Right Answer:

Dictionaries in Python are used to store collections of items where each item is indexed by a key.

Which of the following statements about Python strings is true?

Right Answer:

Strings in Python can be concatenated using the “+” operator to combine multiple strings into one.

What will be the output of the following code snippet?
x = {"a": 1, "b": 2}
y = {"b": 3, "c": 4}
z = {**x, **y}
print(z)

Right Answer:

The ** operator is used for dictionary unpacking, combining the key-value pairs of two dictionaries. If there are duplicate keys, the value from the second dictionary overrides the value from the first dictionary. Therefore, the output will be {“a”: 1, “b”: 3, “c”: 4}.

What is the output of the following code snippet?
x = 3.14
print(type(x))

Right Answer:

The code snippet prints the data type of the variable “x”, which is a floating-point number. The correct type name in Python is “float”.

Which data type in Python is used to store a sequence of characters?

Right Answer:

Strings are used to store sequences of characters in Python.

What is the output of the following code snippet?
x = [1, 2, 3]
y = x.copy()
x.append(4)
print(y)

Right Answer:

The copy() method creates a shallow copy of the list, so changes made to the original list “x” will not affect the copied list “y”. Therefore, the output will be [1, 2, 3].

Which data type in Python is immutable?

Right Answer:

Tuples in Python are immutable, meaning their elements cannot be changed after they are created.

Which data type in Python is mutable?

Right Answer:

Lists in Python are mutable, meaning their elements can be changed after they are created.

Which data type is used to store a collection of items, where each item is indexed by a numerical index?

Right Answer:

Lists in Python are used to store collections of items where each item is indexed by a numerical index.

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