Lesson 42 - file related functions

What will be the output-

f=open('abc','w')

l=['kolkata\n','delhi\n','chennai\n','mumbai\n']

f.write(l)

f.close()

print("written all the elements of list")

• written all the elements of list

• wrong arguments in write function error

• file not available error

• Opening wrong file mode error

What is the output of the following program :

print "Hello World"[::-1]

• dlroW olleH

• Hello Worl

• d

• Error

What is the output of the following code :

print 9//2

• 4

• 4.5

• 4.0

• error

Which of these is not a core data type?

• class

• list

• dictionary

• set

What data type is the object below ? L = [1, 23, ‘hello’, 1]

• List

• Dictionary

• tuple

• Array

What will be the output of the following code :

print type(type(int))

• type 'int'

• type 'type'

• error

• 0

What is the output of the following program :

y = 8

z = lambda x : x * y

print z(6)

• 48

• 14

• 64

• none

Suppose list1 is [3, 4, 5, 20, 5, 25, 1, 3], what is list1 after list1.pop(1)?

• [3, 5, 20, 5, 25, 1, 3]

• [1, 3, 4, 5, 20, 5, 25]

• [1, 3, 3, 4, 5, 5, 20, 25]

• [3, 4, 5, 20, 5, 25, 1, 3]

What is the output of the expression : 3*1**3

• 27

• 3

• 9

• 1

Which of the following is invalid?

• _a = 1

• __a = 1

• __str__ = 1

• none