Computer Science Revision 1

Find the invalid identifier from the following

• None

• address

• Name

• pass

Consider a declaration L = (1, 'Python', '3.14'). Which of the following represents the data type of L?

• list

• tuple

• dictionary

• string

Given a Tuple tup1= (10, 20, 30, 40, 50, 60, 70, 80, 90). What will be the output of print (tup1 [3:7:2])?

• (40,50,60,70,80)

• (40,50,60,70)

• [40,60]

• (40,60)

Which of the following option is not correct?

• if we try to read a text file that does not exist, an error occurs.

• if we try to read a text file that does not exist, the file gets created.

• if we try to write on a text file that does not exist, no error occurs.

• if we try to write on a text file that does not exist, the file gets Created.

Which of the following options can be used to read the first line of a text file Myfile.txt?

• myfile = open('Myfile.txt'); myfile.read()

• myfile = open('Myfile.txt','r'); myfile.read(n)

• myfile = open('Myfile.txt'); myfile.readline()

• myfile = open('Myfile.txt'); myfile.readlines()

Assume that the position of the file pointer is at the beginning of 3rd line in a text file. Which of the following option can be used to read all the remaining lines?

• myfile.read()

• myfile.read(n)

• myfile.readline()

• myfile.readlines()

A text file student.txt is stored in the storage device. Identify the correct option out of the following options to open the file in read mode.

• myfile = open('student.txt','rb')

• myfile = open('student.txt','w')

• myfile = open('student.txt','r')

• myfile = open('student.txt')

The return type of the input() function is

• string

• integer

• list

• tuple

Which of the following operator cannot be used with string data type?

• +

• in

• *

• /

Consider a tuple tup1 = (10, 15, 25, and 30). Identify the statement that will result in an error.

• print(tup1[2])

• tup1[2] = 20

• print(min(tup1))

• print(len(tup1))