parser.py

# Library for easier file input
import fileinput

# Open searchRequests.txt for appending
outputFile = open('searchRequests.txt', 'r+',encoding='utf-8', errors='ignore')

# Loop through the files, and run process() on each line of each file f
with fileinput.input(files=('April1OutputUTF.txt', 'April2OutputUTF.txt', \
                            'April3OutputUTF.txt', 'April4OutputUTF.txt', \
                            'April5OutputUTF.txt', 'April6OutputUTF.txt', \
                            'April7OutputUTF.txt', 'April8OutputUTF.txt', \
                            'June1OutputUTF.txt', 'June2OutputUTF.txt', \
                            'June3OutputUTF.txt', 'June4OutputUTF.txt', \
                            'March1OutputUTF.txt', 'March2OutputUTF.txt', \
                            'March3OutputUTF.txt', 'March4OutputUTF.txt', \
                            'March5OutputUTF.txt', 'March6OutputUTF.txt', \
                            'March7OutputUTF.txt', 'March7OutputUTF.txt', \
                            'May1OutputUTF.txt', 'May2OutputUTF.txt', \
                            'May3OutputUTF.txt', 'May4OutputUTF.txt' )) as f:
    # For each line in the current file 'f'
    for line in f:
        try:
            # If that lines contains a GET request to SearchResults.aspx...
            if line.find("GET /SearchResults.aspx") != -1:
                # Add it to the output file
                outputFile.write(line)
        except:
            print("Encountered an error")