Govt. Exams
Entrance Exams
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Topics in Python Programming
What will be the output?
my_list = [1, 2, 3, 4, 5]
print(my_list[1:3])
my_list = [1, 2, 3, 4, 5]
print(my_list[1:3])
Correct Answer:
B. [2, 3]
EXPLANATION
List slicing [1:3] returns elements from index 1 (inclusive) to index 3 (exclusive), which are elements at positions 1 and 2.
Which method removes and returns the last element from a list?
Correct Answer:
B. pop()
EXPLANATION
pop() removes and returns the last element (or element at specified index). remove() only removes value, doesn't return it.
What will be the type of x after executing: x = [1, 2.5, 'hello']?
Correct Answer:
A. list
EXPLANATION
Square brackets [] create a list object. Lists in Python can contain elements of different data types (heterogeneous).
Which of the following is NOT a valid Python data type?
Correct Answer:
B. string
EXPLANATION
In Python, the string data type is represented as 'str', not 'string'. 'string' is not a built-in data type.
What will be the output of the following code?
my_list = [1, 2, 3]
my_list.append(4)
print(len(my_list))
my_list = [1, 2, 3]
my_list.append(4)
print(len(my_list))
Correct Answer:
A. 4
EXPLANATION
append() adds one element to the list. Initial length is 3, after append(4) it becomes 4.
