Question

Python Help Please! This is a problem that I have been stuck on.I am only suppose to use the basic python coding principles, including for loops, if statements, elif statements, lists, counters, functions, nested statements, .read, .write, while, local variables or global variables, etc. Thank you! I am using python 3.4.1. ***( The bottom photo is a continuation of the first one)****

Problem statement For this program, you are to design and implement text search engine, similar to the one used in Google Ads. This text search engine is supposed to search for a phrase (called a query) in one or more .txt files Search engines usually have complicated search algorithms but in this project we will take a slightly simpler app user enters "pet supplies", then the search will be successful, if the text file contains phrases such as roach. We will look for a phrase entered by a user in the same exact word order, e.g. if the discount pet supplies" or "pet supplies wholesale, but not for searches like "pet bird supplies", ""supplies "Captain America" and pet, or "pet food and art supplies ies". While the order of the words is important, e.g America Captain" will give different results, the search text engine itself is not case sensitive, e.g "Captain America" and "captain America" are the same thing In addition, our search will be based on keywords only, which means that common words (also known as stop words) and punctuation symbols ( Stop words are common words that are considered uninformative from a query point of view, for example articles, determinants, pronouns. The list of stop words is provided to the program in the file called StopWords.csv (sample file is provided on Canvas). For example, if the user enters "black and white, maybe gray?", and "and" is considered a stop word, then the actual query is ! ?) will be removed from both the documents and the query black white maybe gray". Finally, the entire query/phrase has to appear on one line in the search file in order for the search to be successful, i.e. if a file contains "black white" on one line and "maybe gray" on another line, the match is not counted Input The user will provide the following input to your program search phrase the number of files they want to search, with possible selections including a letter Y to indicate all files in the directory (you are given a function in proj2.py file that returns a list of filenames in the current directory- use it in your code) if a different letter was entered, then a user must enter an integer to signify the specific number of files to process o if the specific number of files is selected, then the user has to enter their - filenames The program is to handle invalid input and proceed only, if a valid data type and value are entered -the search phrase, after removing stop words and replacing punctuations with blanks, has to have at least two letters and consist only of letters and whitespaces the number of files to search cannot be <= 0 and ca n not be more than the number of files in the directory the filename entered by the user must be the proper filename in the directory and must end in txt (filenames are case sensitive) ● - You may assume that the directory contains at least one .txt file Output The output is to show the search phrase, filenames, and the number of occurrences of search phrase in each file Sample run User input is shown in bold and italics Enter the phrase to search Thank you 123 Invalid entry try again Enter the phrase to search Thank you There are 2 txt files in this directory Type Y to search all the txt files in the current foldern How many files do you want to search in? 5 Invalid entry try again How many files dlo you wantto search in? 2 Enter the file name with extension: thank you. csv We can only search in .txt files which already exist Enter the file name with extension al. txt Enter the file name with extension: thank you. txt File al.txt has ooccurrences of the phrase Thank you File thank y u.txt has 5。ccurrences f the phrase Thank y u Do you want to search again? Say Y to continue searching: r Enter the phrase to search Thank and you There are 2 .txt files in this directory Type Y to search all the txt files in the current folder Y File al.txt has 0 occurrences of the phrase Thank you File thank you.txt has 5 occurrences of the phrase Thank you Do you want to search again? Say Y to continue searching: n