Python- Multiple Choice (MCQ) Real Exam Prep Questions And Correct Answers Success Guaranteed.

Which of the following statements create a dictionary? (Multiple Correct Answers Possible) a) d = {} b) d = {"john":40, "peter":45} c) d = {40:"john", 45:"peter"} d) d = (40:"john", 45:"50") - correct answer b, c & d. Which one of these is floor division? a) / b) // c) % d) None of the mentioned - correct answer b) // What is the maximum possible length of an identifier? a) 31 characters b) 63 characters c) 79 characters d) None of the above - correct answer D Why are local variable names beginning with an underscore discouraged? a) they are used to indicate a private variables of a class b) they confuse the interpreter c) they are used to indicate global variables d) they slow down execution - correct answer a Which of the following is an invalid statement? a) abc = 1,000,000 b) a b c = c) a,b,c = 1000, 2000, 3000 d) a_b_c = 1,000,000 - correct answer b) What is the output of the following? try: if '1' != 1: raise "someError" else: print("someError has not occured") except "someError": print ("someError has occured") a) someError has occured b) someError has not occured c) invalid code d) none of the above - correct answer C A new exception class must inherit from a BaseException. There is no such inheritance here. Suppose list1 is [2, 33, 222, 14, 25], What is list1[-1] ? a) Error b) None c) 25 d) 2 - correct answer c) 25 The index -1 corresponds to the last index in the list. To open a file c: for writing, we use a) outfile = open("c:", "r") b) outfile = open("c:", "w") c) outfile = open(file = "c:", "r") d) outfile = open(file = "c:", "o") - correct answer b) The location contains double slashes ( ) and w is used to indicate that file is being written to. What is the output of the following? f = None for i in range (5): with open("", "w") as f: if i > 2: break print d a) True b) False c) None d) Error - correct answer