Match Pattern and Replace - Hands On

Python Work with Files (Article) Work with Files (Program)

1108

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1. Match Pattern and Replace

1. Write a function subst which replaces a pattern matching portion with another value.

2. Using subst, replace all the words ROAD with RD in the following:

addr = ['100 NORTH MAIN ROAD', '100 BROAD ROAD APT.', 'SAROJINI DEVI ROAD', 'BROAD AVENUE ROAD']

3. Use the Test against custom input box to output the result for debugging.

4. Use print(res) to display the output.

Expected Output:

['100 NORTH MAIN RD.', '100 BROAD RD. APT.', 'SAROJINI DEVI RD.', 'BROAD AVENUE RD.']

Given Input:

addr = ['100 NORTH MAIN ROAD',
  '100 BROAD ROAD APT.',
  'SAROJINI DEVI ROAD',
  'BROAD AVENUE ROAD']

Expected Output:

['100 NORTH MAIN RD.', '100 BROAD RD. APT.', 'SAROJINI DEVI RD.', 'BROAD AVENUE RD.']

Code Hint:

#!/bin/python3

import sys
import os
import io
import re


# Complete the function below.
def subst(pattern, replace_str, string):
    #susbstitute pattern and return it


def main():
    addr = ['100 NORTH MAIN ROAD',
            '100 BROAD ROAD APT.',
            'SAROJINI DEVI ROAD',
            'BROAD AVENUE ROAD']
            
    #Create pattern Implementation here 
    
    #Use subst function to replace 'ROAD' to 'RD.',Store as new_address

    return new_address

'''For testing the code, no input is required'''

if __name__ == "__main__":
    f = open(os.environ['OUTPUT_PATH'], 'w')

    res = main();
    f.write(str(res) + "\n")


    f.close()

Program:

#!/bin/python3


import sys

import os

import io

import re


# Complete the function below.

def subst(pattern, replace_str, string):

    return re.sub(pattern,replace_str,string)

    #susbstitute pattern and return it



def main():

    addr = ['100 NORTH MAIN ROAD',

            '100 BROAD ROAD APT.',

            'SAROJINI DEVI ROAD',

            'BROAD AVENUE ROAD']

            

    #Create pattern Implementation here 

    

    #Use subst function to replace 'ROAD' to 'RD.',Store as new_address

    new_address=[]

    for i in addr:

        new_address.append(subst(r' ROAD',' RD.',i))

    return new_address


'''For testing the code, no input is required'''

if __name__ == "__main__":
    f = open(os.environ['OUTPUT_PATH'], 'w')

    res = main();
    f.write(str(res) + "\n")


    f.close()

Output:

  Output: 
['100 NORTH MAIN RD.', '100 BROAD RD. APT.', 'SAROJINI DEVI RD.', 'BROAD AVENUE RD.']

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