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Chapter 10 Functions Solutions

Question - 11 : -
What will be the output of the following code

class c (object):
….def_init_(self):
self.x = 1
C = C()
print C.X
print C.X
print C.X
print C.X

Answer - 11 : -

All the outputs will be 1, since the value of the objects attribute (X) is never changed.
1
1
1
1
X is now a part of the public members of the class C. Thus it can be accessed directly.

Question - 12 : -
What gets printed with the following code ?

d= lambda p: p * 2
t = lambda p: p * 3
x = 2
x = d(x)
x = t(x)
x = d(x)
print x

Answer - 12 : -

24

Question - 13 : -
What gets printed with the following code ?

x = 4.5
y = 2
print x//y

Answer - 13 : -

2.0

Question - 14 : -
What gets printed by the code snippet below?
import math
print math.floor(5.5)

Answer - 14 : -

5.0

Question - 15 : -
What gets printed by the code snippet below?
x = “foo ”
y = 2
print x + y

Answer - 15 : -

An exception is thrown.

Question - 16 : -
What does the following code do?
def a(b, c, d): pass

Answer - 16 : -

It defines a function, which does nothing.

Question - 17 : -
What do you mean by function?

Answer - 17 : -

A function is a block of organized, reusable code that is used to perform a single, related action.

Question - 18 : -
Do Python supports built-in functions?

Answer - 18 : -

Yes, Python gives you many built-in functions like print() etc.

Question - 19 : -
Can First statement of a function be optional?

Answer - 19 : -

Yes, The first statement of a function can be an optional statement.

Question - 20 : -
Why we use return [expression] in Python?

Answer - 20 : -

The statement return [expression] exits a function.

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