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9. All unary operators in an expression are evaluated from left to right. __________
10. If an error is encountered, Python interpreter skips that statement and starts executing the next
statement in sequence. __________
C. Fill in the blanks.
1. The function ____________ returns the type of an object.
2. In a Boolean expression, Python considers the numeric value 0 as ____________ and a numeric value other than 0
as ____________.
3. Elements of sets and dictionaries are enclosed in ____________ brackets.
4. An ____________ operator is typically used for checking the data type of an object.
5. The function ____________ transforms the ASCII character to its ASCII code.
D. Answer the following questions.
1. Identify the data type of each of the following:
"kilogram", 78.3, [90,45,23,76], ('a', 'b')
2. Consider the following string:
message = "You are late."
What will be the output of the statements given below:
message[2]
message[5]
3. What is the difference between the two statements given below:
t = [1, 3, 4, 5, 6, 3, 10]
t = {1, 3, 4, 5, 6, 3, 10}
4. The following set of statements results in an error. Why?
>>> days = ('sun','mon','wed')
>>> days[2] = 'tue'
5. Name two mutable and two immutable data types.
6. Which data type is used to store textual data?
7. What is the difference between a tuple and a dictionary?
8. Simmy wants to store days of the week in a sequence data type. Which data type will you recommend?
9. What type of operators that act on a pair of values?
10. Evaluate the following Python expressions, if a = 5, b = 2, and c = -2:
(i) a + b // a
(ii) c * 2 ** a
(iii) a > b or a + c // 2 <= 0
11. What is the difference between the following operators:
(i) * and **
(ii) = and ==
(iii) relational and logical
(iv) \ and \\
(v) identity and membership
12. What is meant by the term expression in Python programming?
13. Consider the program given below. Will it be executed successfully? Why/ Why not?
num = input("Enter a number")
num = num - 10
print("num = ", num)
96 Touchpad Informatics Practices-XI

