Python Test 4

Question 2: Which of the following statements are valid in Python?

• >>> x, y, z = 10, 20, 30
• >>> x, y, z = 10, 'Hello', True
• >>> x = 10, y = 'Hello', z = True
• >>> x, y, z = (10, 'Hello', True)

Question 3: What will be the output of the following program?

x = "X" 
y = "X"
print(x is y)

• False
• True
• 0
• 1
• SyntaxError

Question 4: 'str' in 'string' returns _________.

• True
• False
• 0
• SyntaxError

Question 5: Given x='HelloWorld'which expression out of the following will return 'World'?

• x[4:9]
• x[5:10]
• x[7:9]
• x[5,10]

Question 6: What will be the output of the following code?

nums=list({1:'one',2:'two'})
print(nums)

• Syntax Error
• [1, 2]
• ['one', 'two']
• Runtime error

Question 7: Which of the following is true?

• List object can contain tuple as one of the items
• Tuple can contain a list as one of the items
• Both a and b are true
• Both a and b are false

Question 8: If lst=[[1,2],[3,4]], which of the following will return true?

• 3 in lst
• [3,4] not in lst
• 3 in lst[1]
• None of the above

Question 9: What will be the output of the following code?

lst = [1, 2, 3, 4, 5]
print(lst[0:1])

• [1, 2, 3, 4, 5]
• []
• [1]
• SyntaxError

Question 10: Which of following will result in error?

• tuple('1,2')
• tuple((1,2))
• tuple([1,2])
• tuple(1,2)

Question 11: The items() method of dictionary returns:

• list of tuples
• tuple of lists
• tuple of tuples
• list of lists

Question 12: years={1995:'Java', 1972:'C', 1994:'Python'} is a dictionary with key-value pairs of the year of invention and name of a language. The expression list(years)will return:

• list of years
• list of languages
• list of tuples each having year and language
• none of these

Question 13: What will be the output of the following code?

s1={1,2,3,4,5}
s2={4,5,6,7,8}
print(s1-s2)

• {1,2,3}
• {8,6,7}
• Syntax error
• Runtime error

Question 14: How to convert a tuple to a set object?

• Using the set() method
• Using the tuple() method
• Using the type() method
• Using the set.convert() method

Question 15: What will be the output of the following code?

s={1,2,3 }
s[0]=10
print(s)

• {10,2,3}
• {1,2,10}
• {1,2,3}
• TypeError