Python Online Test

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

class Demo:
    def check(self):
        return " Demo's check "  
    def display(self):
        print(self.check())
class Demo_Derived(Demo):
    def check(self):
        return " Derived's check "
Demo().display()
Demo_Derived().display()

2. What does single-level inheritance mean?

3. The function used to alter the thickness of the pen to ‘x’ units:

4. What will be the output of the following Python code snippet?

print('\t'.isspace())

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

a={"a":1,"b":2,"c":3}
b=dict(zip(a.values(),a.keys()))
print(b)

6. _______________________ exceptions are raised as a result of an error in opening a particular file.

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

def f(x):
    def f1(*args, **kwargs):
        print("*"* 5)
        x(*args, **kwargs)
        print("*"* 5)
    return f1
def a(x):
    def f1(*args, **kwargs):
        print("%"* 5)
        x(*args, **kwargs)
        print("%"* 5)
    return f1
@f
@a
def p(m):
    print(m)
p("hello")

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

list1 = [1, 3]
list2 = list1
list1[0] = 4
print(list2)

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

e="butter"
def f(a): print(a)+e
f("bitter")

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

print('{a}{b}{a}'.format(a='hello', b='world'))

11. In Python, which core data type is used to store values in the form of key–value pairs?

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

print(list("a#b#c#d".split('#')))

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

def display(b, n):
    while n > 0:
        print(b,end="")
        n=n-1
display('z',3)

14. What will be the output of the following Python code snippet?

print('cd'.partition('cd'))

15. The expression 2**2**3 is evaluates as: (2**2)**3.

16. Which function is used to close a file in python?

17. 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]]

18. What will be the output of the following Python code snippet?

print('ab\ncd\nef'.splitlines())

19. To retrieve the character at index 3 from string s="Hello" what command do we execute (multiple answers allowed)?

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

a=[1,2,3,4]
b=[sum(a[0:x+1]) for x in range(0,len(a))]
print(b)

21. What will be the output of the following Python code if a=10 and b =20?

a=10
b=20
a=a^b
b=a^b
a=a^b
print(a,b)

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

a=(1,2,(4,5))
b=(1,2,(3,4))
print(a<b)

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

s={1, 2, 3}
s.update(4)
print(s)

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

x = [12.1, 34.0]
print(len(' '.join(list(map(str, x)))))

25. What is the default value of encoding in encode()?

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

def c(f):
    def inner(*args, **kargs):
        inner.co += 1
        return f(*args, **kargs)
    inner.co = 0
    return inner
@c
def fnc():
    pass
if __name__ == '__main__':
    fnc()
    fnc()
    fnc()
    print(fnc.co)

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

l1=[1,2,3]
l2=[4,5,6]
print([x*y for x in l1 for y in l2])

28. Which function is used to write all the characters?

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

a=(1,2)
b=(3,4)
c=a+b
print(c)

30. What will be the output of the following Python function, assuming that the random library has already been included?

import random
print(random.shuffle[1,2,24])

31. State whether true or false.

import time
s = time.time()
t = time.time()
print(s == t)

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

def f(x):
    yield x+1
    print("test")
    yield x+2
g=f(9)

33. 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)

34. Which of the following is not the correct syntax for creating a set?

35. How are required arguments specified in the function heading?

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

import turtle
t=turtle.Pen()
t.backward(100)
t.penup()
t.right(45)
t.isdown()

37. What will be the output of the following Python code snippet?

print('%(qty)d more %(food)s' %{'qty':1, 'food': 'spam'})

38. Which of the following functions creates a Python object?

39. Is the following Python code valid?

a={3,4,{7,5}}
print(a[2][0])

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

x = "abcdef"
i = "a"
while i in x:
    x = x[:-1]
    print(i, end = " ")

41. Which of the following will result in an error?

42. What is returned by math.isfinite(float('nan'))?

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

fo = open("foo.txt", "wb")
print("Name of the file: ", fo.name)
fo.flush()
fo.close()

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

if (9 < 0) and (0 < -9):
    print("hello")
elif (9 > 0) or False:
    print("good")
else:
    print("bad")

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

import random
print(random.randrange(1,100,10))

46. What will be the output of the following Python function?

print(sum([1,2,3]))
print(sum(2,4,6))

47. Which of the following isn’t true about dictionary keys?

48. What does built-in function help do in context of classes?

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

example = "snow world"
print(example[3] = 's')

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