Automation Guru: February 2023

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

  list = ['a', 'b', 'c', 'd', 'e']
   print (list[::2])
   print (list[::-1])

Ans:-

['a', 'c', 'e']

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

2. Write a program to sort a list of filenames based on the extension.

files = ["test.py", "program.c", "sample.pl", "hello.cpp"]
#Expected output ['program.c', 'hello.cpp', 'sample.pl', 'test.py']

Ans:-

output: ['program.c', 'hello.cpp', 'sample.pl', 'test.py']

3. Complete the Body of the get_negative function

   def get_negatives(array):
pass

   mylist=[0,-1,2,3,-4,5,6,-7,8]
   print(get_negatives(mylist))

   mylist2=[0,1,2]
   print(get_negatives(mylist2))

   mylist3=[-1,-9,-4]
   print(get_negatives(mylist3))

   mylist4=[]
   print(get_negatives(mylist4))

Ans:-

1. Method1

            def get_negatives(array):
           lst = []
           for x in array:
           if x<0:
       lst.append(x)
           return lst

2. Method2

def get_negative(array):

return [x for x in array if x<0]

4. what would be the output of following ?

print([x for x in range(20) if x%3 == 0])

Ans:-

[0, 3, 6, 9, 12, 15, 18]

5. What would be the output of the following code?

class Parent():
def __init__(self):
print(10)
def SayHi(self):
print("Hi")

class Child(Parent):
def __init__(self):
super().__init__()
print(20)
def SayHello(self):
self.SayHi()
print("Hello")

p = Parent()
p.SayHi()
c = Child()
c.SayHello()

Ans:-

10
Hi
10
20
Hi
Hello

Copy the code and execute- analyze the flow of this code. This question is important in terms of your basic understanding of the OOP concept called inheritance.