Python (BCS-DS-427B)

What is the correct syntax to declare a list in Python?

• list_name = {element1, element2, element3}
• list_name = [element1, element2, element3]
• list_name : [element1, element2, element3]
• list_name = (element1, element2, element3)

Which data type in Python is immutable?

• list
• set
• dictionary
• tuple

What does the __init__ method in a Python class do?

• a) Initializes class variables
  

• b) Serves as the destructor of the class
  

• c) Automatically initializes an instance of the class
  

• d) Defines a method inside the class

What will len([1, [2, 3], 4]) return?

• 3
• 4
• 2
• 5

What library is used for image processing in Python?

• Matplotlib
• Pillow

• Scikit-image
• OpenCV

What is the output of the following code?

x = (1, 2, 3)

y = x[1:]

print(y)

• (1, 2, 3)
• (3)
• (2, 3)
• (1, 2)

Which of the following is a valid NumPy function?

• list()
• tensor()
• set()
• array()

What is the output of np.zeros((2, 3))?

• [[0.0, 0.0, 0.0], [0.0, 0.0, 0.0]]
• [[2, 2, 2], [2, 2, 2]]
• [[0, 0, 0], [0, 0, 0]]
• [[1, 1, 1], [1, 1, 1]]

What does the shape attribute of a NumPy array return?

• A tuple representing the dimensions of the array.
• A list of the array's data types.
• An integer indicating the total number of elements.
• A string representing the type of the array.

Which method is used to create a Pandas DataFrame from a dictionary?

• pd.DataFrame()
• pd.dictToDataFrame()
• pd.DataFrameFromDict()
• pd.createDataFrame()