Python Basics

ICP-1

Complete the following:

Name: Vineeth Mohan Edukulla

Email: vekfd@umkc.edu

Basics of Python

Lesson and Assignment Objectives

1. Python installation and understanding the python basic concepts

2. Write python program to input the string as a list of characters from console, delete at least 2 characters, reverse the resultant string and print it. – Take two numbers from user and perform at least 4 arithmetic operations on them

3. Write a program that accepts a sentence and replace each occurrence of ‘python’ with ‘pythons’ without using regex.

4. Use the if statement conditions to write a program to print the letter grade based on an input class score. Use the grading scheme we are using in this class.

   A ≥ 94.0%
   A-≥ 90.0%
   B+≥ 87.0%
   B≥ 84.0%
   B-≥ 80.0%
   C+≥ 77.0%
   C≥ 74.0%
   C-≥ 70.0%
   D+≥ 67.0%
   D≥ 64.0%
   D-≥ 60.0%
   F< 60.0%

Softwares Required :

1. Python 3
2. Github Desktop
3. pycharm

Implementation:

1. Installed the python 3.
2. Installed pycharm and created a new project with default interpreter.
3. Developed the code for the problems and pushed the code file video and screenshots to the github using github desktop.

Tasks Performed

Task 1: Installation

Installed the python software from https://www.python.org/downloads/

Installed pycharm and created new project to write and run the code.

Task 2a:

Write python program to input the string as a list of characters from console, delete at least 2 characters, reverse the resultant string and print it.

we have removed the first two characters using the below code:

inputstring = inputstring[2:] 

Next reversed the remaining characters using slicing:

inputstring = inputstring[::-1]
# time complexity = O(1) and space complexity is O(n) where n is the length of the string

Below is the output of the code.

Task 2b:

Take two numbers from user and perform at least 4 arithmetic operations on them

We have taken the input from the command line and performed Addition, Substraction, Multiplication, Division.

addition = num1 + num2
multiplication = num1 * num2
division = num1 / num2
substraction = num1 - num2
print("sum {0}".format(addition))
print("multiplication {0}".format(multiplication))
print("division {0}".format(division))
print("substraction {0}".format(substraction))
# time complexity = O(1) and space complexity is O(1)

Below is the output of the code:

Task 3:

Write a program that accepts a sentence and replace each occurrence of ‘python’ with ‘pythons’ without using regex.

Python provides replace() method to replace a specific string in the sentence with a new string. replace() method is case sensitive.

inputstring = input("Enter the sentence: \n")
inputstring: str = inputstring.replace('python', 'pythons')
print(inputstring)
# time complexity = O(n) and space complexity is O(n) where n is the length of the string

Below is the output of the code.

Task 4:

Use the if statement conditions to write a program to print the letter grade based on an input class score. Use the grading scheme we are using in this class.

score = int(input("enter the score: \n"))
if score < 0 or score > 100:
    print('invalid score, please enter valid score from 0 to 100 only')
elif score >= 94:
    print('A')
elif score >= 90:
    print('A-')
elif score >= 87:
    print('B+')
elif score >= 84:
    print('B')
elif score >= 80:
    print('B-')
elif score >= 77:
    print('C+')
elif score >= 74:
    print('C')
elif score >= 70:
    print('C-')
elif score >= 67:
    print('D+')
elif score >= 64:
    print('D')
elif score >= 60:
    print('D-')
else:
    print('F')  # time complexity = O(1) and space complexity is O(1)

Below is the output for the code

Code Explanation Video:
https://app.box.com/s/qwjidx8tral96yes12500n9l44ir0la0

OR

https://github.com/UMKC-APL-PythonDeepLearing/icp-1-vekfd/blob/master/Video%20Explanation/ICP1.mp4?raw=true