Case Study I - Perform Various I/O operations using Python edureka

 

PySpark Certification 

 Introduction to Python for Apache Spark Case Study1

What will be the output?

Code :

nums =set([1,1,2,3,3,3,4,4,7,8,9,1,3,2,56])

print(len(nums))

Output:

8

nums =set([1,1,2,3,3,3,4,4])

print(len(nums))

Output:

4

What will be the output?

Code

d ={"john":40, "peter":45}

print(list(d.keys()))

Output:

['john', 'peter']

 

3.A website requires a user to input username and password to register. Write a program to check the validity of password given by user. Following are the criteria for checking password:

1. At least 1 letter between [a-z]

2. At least 1 number between [0-9]1. At least 1 letter between [A-Z]

3. At least 1 character from [$#@]

4. Minimum length of transaction password: 6

5. Maximum length of transaction password: 12

Hint: In case of input data being supplied to the question, it should be assumed to be a console input

Code:

import re

p= input("Input your password  ")

x = True

while x:  

    if (len(p)<6 or len(p)>12):

        break

    elif not re.search("[a-z]",p):

        break

    elif not re.search("[0-9]",p):

        break

    elif not re.search("[A-Z]",p):

        break

    elif not re.search("[$#@]",p):

        break

    elif re.search("\s",p):

        break

    else:

        print("Valid Password")

        print(p)

        x=False

        break

if x:

    print("Not a Valid Password")

output:

input your password  B@tyjnj123

Valid Password

B@tyjnj123

 

Write a for loop that prints all elements of a list and their position in the list.

code :

a = [4,7,3,2,5,9]

 

Answer:

 

a = [4,7,3,2,5,9]

 

for i in a:

    print("Element: " + str(i) + " Index: "+ str(a.index(i)))

 

Output:

 

 

Element: 4 Index: 0

Element: 7 Index: 1

Element: 3 Index: 2

Element: 2 Index: 3

Element: 5 Index: 4

Element: 9 Index: 5