Python Programming Mock Test 7

10%

Question 1 of 10

1. What will be the output of the following Python code?

import functools
l=[1,2,3,4]
print(functools.reduce(lambda x,y:x*y,l))

No output

Error

Question 1 of 10

Question 2 of 10

2. Which is the most appropriate definition for recursion?

An in-built method that is automatically called

A function execution instance that calls another execution instance of the same function

A function that calls itself

A class method that calls another class method

Question 2 of 10

Question 3 of 10

3. Which of the following is false about “import modulename” form of import?

The namespace of imported module becomes available to importing module

The identifiers in module are accessed as: modulename.identifier

The namespace of imported module becomes part of importing module

This form of import prevents name clash

Question 3 of 10

Question 4 of 10

4. What is returned by math.isfinite(float('inf'))?

False

None

error

True

Question 4 of 10

Question 5 of 10

5. What will be the output of the following Python code?

x = abcd
print(list(map(list, x)))

[['a'], ['b'], ['c'], ['d']]

['abcd']

none of the mentioned

['a', 'b', 'c', 'd']

Question 5 of 10

Question 6 of 10

6. What does the function math.frexp(x) return?

a tuple containing the mantissa of x

a tuple containing the mantissa and the exponent of x

a list containing the exponent of x

a list containing the mantissa and the exponent of x

Question 6 of 10

Question 7 of 10

7. Which type of copy is shown in the following python code?

l1=[[10, 20], [30, 40], [50, 60]]
ls=list(l1)
ls
[[10, 20], [30, 40], [50, 60]]

Shallow copy

All of the mentioned

memberwise

Deep copy

Question 7 of 10

Question 8 of 10

8. What happens if a local variable exists with the same name as the global variable you want to access?

Undefined behavior

Error

The global variable is shadowed

The local variable is shadowed

Question 8 of 10

Question 9 of 10

9. Observe the following Python code?

def a(n):
    if n == 0:
        return 0
    else:
        return n*a(n - 1)
def b(n, tot):
    if n == 0:
        return tot
    else:
        return b(n-2, tot-2)

a() is tail recursive but b() isn’t

Both a() and b() are tail recursive

Both a() and b() aren’t tail recursive

b() is tail recursive but a() isn’t

Question 9 of 10

Question 10 of 10

10. Which of the following isn’t true about main modules?

Main modules may import any number of modules

Other main modules can import main modules

When a python file is directly executed, it is considered main module of a program

Special name given to main modules is: __main__

Question 10 of 10