Question

Write a python function score_formatter() that takes one parameter, which is a formatted string that contains information about the score received by a student in a particular subject. The function analyzes the string and returns a reformatted string for the score. You will need to use the function re.sub that is discussed in the lecture notes. If the string does not match the pattern, the function returns the string "error".

The input string is always given in the format specified below. When there is a space in the output, there is exactly one space; when there’s an identifier like (1) or (2), those are the parts that can be replaced (which means you should use regular expression syntax to identify them in the pattern).

Format:

STUDENT got SCORE in SUBJECT on    DATE
  (1)   got  (2)  in   (3)   on (4) (5) (6)

• STUDENT (1): This part represents the name of the student. It will always be a string that starts with a letter.

• SCORE (2): This part represents the score of the student. It will always be a non-negative decimal number.

• SUBJECT (3): This part represents the subject. It will always be a string that starts with a letter.

• DATE (4) (5) (6): These three parts all belong to the date. (4) represents the spelled-out month (e.g., June); (5) represents the two-digit day; and (6) represents the four-digit year. These three parts are separated by spaces.

For this part you can safely assume that valid months are entered, so simply use \w+ to match a month name.

What the Function Returns

As mentioned above, your program should take the input string and reformat it in a specific way. The return string has the format indicated below (where bold parts are the parts that are non-static and which you’ll need regular expressions to extract). Your function should return a string containing information about Subject, Score, Date, and Student each on a separate line. When this string is printed out, it should look something like this:

Subject: The name of the subject
Score: The score obtained by the studentDate: Day-Month-Year
Student: The student’s name

Note: Please follow the format and do not include excessive elements or spaces, since we will be expecting the string to be formatted exactly as specified.

Example #1:
Function argument: "Yupeng got 100 in CSE101 on August 11 2019"Returnvalue:"Subject: CSE101\nScore: 100\nDate: 11-August-2019\nStudent: Yupeng"Example #2:
Function argument: "Ravi got 90 in CSE101 on July 12 2018"
Return value: "Subject: CSE101\nScore: 90\nDate: 12-July-2018\nStudent: Ravi"Example #3:
Function argument: "Virat got 99 in Biology on July 02 2018"
Return value: "Subject: Biology\nScore: 99\nDate: 02-July-2018\nStudent: Virat"Example #4:
Function argument: "alena got .5 in physics on July 22 2019"
Return value: "error"
Example #5:
Function argument: "Sam got 75.5 in physics on July 22 2019"

Return value: "error"

Answer 1

import re

def score_formatter(string):
    pattern = '(\w+) got (\d{1,3}) in (\w+) on (\w+) (\d{2}) (\d{4})'
    match = re.search(pattern,string)
    if match:
        student = match.group(1)
        score = match.group(2)
        subject = match.group(3)
        month = match.group(4)
        day = match.group(5)
        year = match.group(6)
        return "Subject: "+subject+"\n"+"Score:"+score+"\nDate: "\
               +day+"-"+month+"-"+year+"\nStudent: "+student
    else:
        return "error"