These methods are old fashioned and now need little bit modification. Found it ! 3. One can also cleverly use the “wc” command on terminal and find the number of files (or files of certain type) in a directory. 2. from word_count import count _ words . To check if a string starts with a word in Python, use the regular expression for “starts with” ^ and the word itself. Examples: Input: I am R2J! The algorithm we are going … This file has been stored in the same directory. You can call the file as an external library. how can we save all results to results.txt? In this tutorial, we shall learn how to count number of words in text file, using Python example programs. From there, we will use the regex library to find each URL in the document text, then adding the URLs to a list, which will be perfect for performing for-loops. Let’s see the methods with the example given … Hope you will like this simple program to search any word in a text file, If you have any doubt/query, please let us know via your comments. If the path is invalid or if it does not exist then the search path is set to the current directory. August 14, 2016 martin. print(fname, "[", line_no, ",", index, "] ", line, sep="") Python - Copy contents of one file to another file. There are two ways to call Python files: You can call the file directly, python filename, which is what we’ve been doing. If the string is found, it returns the lowest index of … Figuring out most used words in text file 3 ; Code Confusion 16 ; Replace keys with values and write in a new file Python 3 ; Wordcount of a text file (Python) 13 ; plotting sine curve 8 ; Replace specific column of file 3 ; Read from an already open file (Python) 3 ; need help convert c++ to vb6 serial port 8 ; writing an array to a file python 5 Test File. My problem is that the word will not be an exact match in the text file. Find the most repeated word in a text file. The application then enters a loop where the user is asked for a color name that is placed in ColorSelect. If no file type is input then program will search all files in the directory. You can see the output in "guru99.txt" file. def replace_words(base_text, device_values): for key, val in device_values.items(): base_text = base_text.replace(key, val) … Split on the line using function ‘split()’ and store it in a temporary Python list. The built-in os module has a number of useful functions that can be used to list directory contents and filter the results. 1. any suggestions ? Most frequent words in a text file with Python. For example, in the below text file example, I'm searching for the word "color=". ls -l *.pdf | wc -l And remember that the first line of “ls -l” statement is a description. 10, Dec 20. Viewed 5k times -1. Before you can write to a file, you need to open it. It also creates a variable named ColorSelect to hold the name of the color that the user wants to find. If you wanted to use the function count_words in another file, you would do this: 1. Hello, Active 4 years, 11 months ago. Steps to Count Number of Words in Text File. 3. The content of the rakesh.txt file is as follows. File "./py.py", line 43 We haven’t covered calling the file as a library yet. Python – Check if String starts with Specific word using Regex. In the source string, the first occurrence of the word “Python” is the 10 th position. 4. For example, a frequency distribution could be used to record the frequency of each word type in a document. You should use the fi… To count the number of occurrences of a specific word in a text file, read the content of text file to a string and use String.count() function with the word passed as argument to the count() function. Split the text using space separator. In my opinion it reduces the readability though. For instance, if you are developing a … 01, May 20. Python: Get last N lines of a text file, like tail command; Python: How to delete specific lines in a file in a memory-efficient way? To count the number of words in a text file, follow these steps. Print all lines including both search strings? The built-in os module has a number of useful functions that can be used to list directory contents and filter the results. @Don You need to add the code between line_no = 1 and while line != '' : I need a similar solution, but no luck so far. Open the file in read mode and handle it in text mode. 22, Sep 20. But in this post, we will learn some easy and decent method to count the word. To find an element in the Python list, use one of the following approaches. 1. Copy and paste below python code in above file. In this tutorial, we are going to use test.txt as our test file. The program outputs the filenames that contain the search string and also the line number and column number where the text appears in the file. To replace string in File using Python, 1.Open input file in read mode. A frequency distribution records the number of times each outcome of an experiment has occurred. New to python but loving it :-), Look at this article which explains reading and writing to CSV. 10, Dec 20. The docx2txt package. If found, the find method returns index where the string was found. Inside Python 3 is all strings sequences of Unicode character,if not encode in or Python 3 do not not recognize encoding it will be bytes (b'hello'). Finally can you add a criteria to pick a range of terms and specify if the results must contain all, must contain none, must contain one but not the others etc? How can we get the number of lines or number of words in a file? The same list content was compared using an IN operator. it starts searching the string from the beginning. How to append text or lines to a file in python? Python | Find position of a character in given string; Python String | replace() replace() in Python to replace a substring; Python | Replace substring in list of strings; Python – Replace Substrings from String List; Python map() function ; Taking input in Python; Iterate over a list in Python; Enumerate() in Python; Python program to convert a list to string; Python | … For instance, you can use a for loop to operate on a file object repeatedly, and each time the same operation is performed, you'll receive a different, or "next," result. so stdout does show me the proper output but am not able to write the same output to new file. To count the number of words in a text file, follow these steps. The program outputs the filenames that … How to append text or lines to a file in python? How can I ruth sith script via web browser to insert string on browser ?? I have copy and paste this script and run it on terminal ./test.py. Searching in a NumPy array. Trying to find specific words from all files in a directory using python. Python 3 will not guess as Python 2 do. With that, the process_line function is no longer necessary and we can rewrite this as: If the directory path does not containing a directory separator, which is forward slash (/) in case of Linux and either a backward slash() or forward slash (/) in case if Windows, then it is appended to search path. How to use two search strings? If you want to find how many times a single word is repeated in a file, I have quoted my code below. Append a text to file in Python Append a text to file in Python using "with statement" Append data to a file as a new line in Python Append multiple lines to a file in Python. Let's make a small game. Image created with Microsoft Word and google searches “Microsoft Word Logo” and “Python Logo” We’ll be t a king advantage of each word document’s XML make-up. Related Posts: Python: How to insert lines at the top of a file? We assume that words in a sentence are … For each line read from input file, replace the string and write to output file. Run the program to check which all log files in the directory c:\samples contain the word "error", Is is possible to output to outlook / csv? Where file_variable is the variable name. We iterate through each word in the file and add it to the dictionary with count as 1. If no file type is input then program will search all files in the directory. Python can search for file names in a specified path of the OS. Read the text using read() function. Use the option –si as shown in Figure 5. Team, I'm writing a Python script. We just saw an example of … Let us start by creating a simple text file ‘myfile‘, Content of the file is as follows. Write a python program to find the longest words. It allows you to get the value of the key but if it isn’t set before, set the value specified in our example 0. One of my reader pointed out that the above program will not be able to search terms like “India”  Here is the modified text file that contains the term in double inverted quotes. I got this errot: The files that match the file type are opened and each line is read in loop. This is nice script, I learnt something from it. To better understand this example, make sure you have knowledge of the following tutorials:-Python File Operation; Python Functions; Python Program to Find the Longest Words in a File.    for search_str in fh.readlines: @Patrick Approach: Open a file in read mode which contains a string. In this option, –m works in recursive mode. The user is prompted to enter a directory path, file type and a text string to be searched. 5 Different ways to read a file line by line in Python; Python: Three ways to check if a file is empty; Python: Read a CSV file line by line with or without header We can achieve the line reading in Python with several methods but we will show you the easiest method first. The most easiest way to count the number of lines, words, and characters in text file is to use the Linux command “wc” in terminal. Here is an example, where the target and replacement words are in a dictionary. To achieve so, we make use of a dictionary object that stores the word as the key and its count as the corresponding value. The default value for start parameter is 0 i.e. For example, a frequency distribution could be used to record the frequency of each word type in a document. Open a file to write First, you have to create a text file and save the text file in the same directory where you will save your python program. Fetch a single line from the file. (Feb-08-2018, 01:21 PM) pratheep Wrote: (Feb-08-2018, 02:03 AM) pratheep Wrote: Sorry dude, can you give me a simple code I want a code without using def you can remove the functions and do the same thing. # python program to search a word in a text File # program by : rakesh kumar word = input('Enter any word that you want to find in text File :') f = open("rakesh.txt","r") if word in f.read().split(): print('Word Found in Text File') else: print('Word not found in Text File') The content of the rakesh.txt file is as follows. Knowledge of certain list operations is necessary for day-day programming. 5 Different ways to read a file line by line in Python; Python: Get last N lines of a text file, like tail command; Python: Read a file in reverse order line by line; Python: Three ways to check if a file is empty; Python: Open a file using “open with” statement & … The user inputs the directory path and a text string to search. The files that match the file type are opened and each line is read in loop. The program uses the os module to get the files from a directory. So, instead of the line "print line", you want it to write to a file. ./py.py Code Snippet is a collection of popular codes for solving common users’ problems. A frequency distribution records the number of times each outcome of an experiment has occurred. Count occurrences of a word … Pulling a random word or string from a line in a text file in Python. How to get a list of files in a given directory. This will take a specific path as input and generate a 3-tuple involving dirpath, dirnames, and filenames. If the user inputs a file type, for example .ini the program will check if the filename ends with the extension .ini. Code snippet: file_variable = open('filename.txt') all_lines_variable = file_variable.readlines() print(all_lines_variable[specific_line_number - 1]) This is the easiest way to read a particular line from a text file in Python. Now I did the first two, however I am not sure how to find on which line the word is. As long as this variable doesn’t contain the word QUIT, the application continues a loop requesting input. Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. This is a Python program to search for a specified text in all files of a directory. The endswith() method returns True if a string ends with the specified suffix. Output: I am R2J! We share everything that we think may be useful for our readers. Posted on 23rd September 2015. Python program to reverse the content of a file and store it in another file. This is why I hate Quora so much. This will take a specific path as input and generate a 3-tuple involving dirpath, dirnames, and filenames. Python - Count Number of Occurrences of a word in Given String - To count the number of occurrences of a specific word in a text file, read the content of text file to a string and use String.count() function with the word passed as argument to the count() function.. ^ Python Linear search on the list. So you will need to In this tutorial, we shall use re.search() function to do an expression match against the string, and find out if the string is starting with a given word or not. Python File I/O: Exercise-8 with Solution. MoviePy – Getting Original File Name of Video File … Output: Geeks 4 Geeks And in that dream, we were flying. Also read: Count number of rows and columns in an excel file in Python. 3. How to list all files in a directory with a certain extension in Python. We are a small group of teachers trying to help our fellow teachers and students. Assuming we have declared an empty dictionary frequency = { }, the above paragraph would look as follows: LogFile-20150922.log[5,25] 22/09/2015 08:56 Unknown error occured. Class Old Question Papers with Marking Scheme- Class 12. Line no 1 simply asked user to feed any word from the keyboard, the second line is responsible to open your text file in text mode. It has a dictionary interface too. and inside the while loop search_str2 = input("Enter the search2 string : ") search_str1 = input("Enter the search1 string : ") index = line.find(search_str1) and line.find(search_str2), Copyright 2021 Open Tech Guides. You may specify the starting index to start searching for the given string. The method that I didn’t know before was the “get” method. Python File I/O: Exercise-8 with Solution. Find a Word in Directory. The text inside this test file is from one of my tutorials at Envato Tuts+. with open(filename, 'r') as fh: Most frequent words in a text file with Python. Python is a widely used high-level, general-purpose, interpreted, dynamic programming language.Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than … This is the first line Second line The third line I love Python I love PHP Text file processing The python script we are going to create will delete a specific line starting with the word defined. The file type can be any text file format such as .txt, .log, .ini, .conf etc., If the user inputs a file type, for example .ini the program will check if the filename ends with the extension .ini. Let us assume we have an about.txt file that contains the following paragraph. My plan for this first part of the article is to show you how to create CSV files using Python 3 and the standard library module CSV. word count in termimal. Like if it was looking for the word "apple" then it would only notice if the line started with "apple", but not if "apple" was somewhere in the middle of the line. Secondly, you might want the script to write its output to a file, instead of printing. There are two functions in this file, the first function is used to extract pdf text, then second function is used to split the text into keyword tokens and remove stop words and punctuations. ''' How to create a text file in Python; … Let’s talk about docx2text first. Declare a Python list ‘words’. This allows us to count the occurrence indeed. Go to step 2 and repeat the steps until the end-of-file (EOF) is reached. How to Crack Online Exams – 7 Must Know Skills ! fw = open(search_path + filename, 'w') It will open a template file and perform a find and replace, saving a new file called output.txt to your directory. What is Python language? 4. The length of the split list should give the number of words. For example, to find the number of pdf files in a directory. 2.Open output file in write mode. I created a function that finds the number of occurrences of a certain word and the number of words in the file but I don't … This will take the function count_words and … At this point, we want to find the frequency of each word in the document. Many times it is required to count the occurrence of each word in a text file. First, you have to create a text file and save the text file in the same directory where you will save your python program. I need to search a text file for a word and then print part of that line. This is a Python package that allows you to scrape text and images from Word Documents. However, as we given the start index as 17 and end 35, so find method returned the index of the second occurrence which is 27. Text File ex: Output: asf.txt Process finished with exit code 0. The output of the code is that earlier file is appended with new data. am having trouble with my custom requirement. ok, you should open some file, find the string and then paste it to the other file like this. This can be done using the module os with the walk() functions. 4. For example, the txt has "The quick brown fox jumps over the lazy dog", The expected out put is 3. Find frequency of each word from a text file using NLTK? … Although there are various approaches to perform this task. Print out the file name, and the line number where the word is present. Using Dialects when reading and writing CSV in Python, Handling Duplicate Rows in a Pandas Dataframe, Getting started with Python Flask on Windows and Linux. Write a python program to find the longest words. Step 2) for i in range(2): f.write("Appended line %d\r\n" % (i+1)) This will write data into the file in append mode. But in our case we already have the file, so we are not required to create a new file. 08, Jan 20. click How to open and read from a file. One of the essential purposes behind creating and maintaining data is to be able to search it later to locate specific bits of information. In this example, we will write a python program to find the longest words in a file. Use the option –mi as shown in Figure 6. What is Python language? So that's the first thing you need to change. The suitable concept to use here is Python's Dictionaries, since we need key-value pairs, where key is the word, and the value represents the frequency words appeared in the document.. So the simple rule is to keep it UTF-8 in and out when reading a file. https://www.opentechguides.com/how-to/article/python/181/csv-read-write.html. You can refine the count by cleaning the string prior to splitting or validating the words after splitting. Input: Geeks 4 Geeks And in that dream, we were flying. For example, you may want to know whether a string contains the word Hello in it. This post will talk about how to read Word Documents with Python. This can be done using the module os with the walk() functions. An iterator is a type of Python object which behaves in certain ways when operated on repeatedly. Python program to read file word by word. Therefore, the total number of pdf files is one less than the result of “ls -l *.pdf | wc -l“. The filename, line number, index and the whole line that contains the string is output to the user console. You ask a basic technical question like this and you get a hundred people with terrible answers that ignore your actual question. The command “wc” basically means “word count” and with different optional parameters one can use it to count the number of lines, words, and characters in a text file. Python can search for file names in a specified path of the OS. Also can you do a "fuzzy" search. Getting the highest index example by rfind() method. just type it, while script will be written :). User must enter a file name and the word to be searched. 5. To get a list of all the files and folders in a particular directory in the filesystem, use os.listdir() in legacy versions of Python or os.scandir() in Python 3.x.os.scandir() is the preferred method to use if you also want to get file and directory … All rights reserved, # Append a directory separator if not already present, # If path does not exist, set search path to current directory. You can see that file names and lines are returned. Till then, you can have a look at some of our Machine Learning Posts. Find Element In List By Index In Python. 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Is there a way in python to look through a file line by line and find a word in that line, but only if the word is the first word in the line? Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Post navigation. Python: Search strings in a file and get line numbers of lines containing the string ; 5 Different ways to read a file line by line in Python; Python: Get last … Python script to find files that contain a text string. There are other file processing techniques in Python, We will discuss them in upcoming posts. I have a similar need. Because once you specify the file name for opening it the interpreter searches the file in the same directory of the program. These languages, first of all, force us to read a word/line/ and then compare each word. Open the file in read mode and handle it in text mode. Then we will see other methods. Here we gonna learn reading a specific line from a text file in Python for both large and small files. If you don’t know how to count the occurrence of a specific word in Python then stay with us we will guide you step by step. fw.write(fname + " " + str(line_no) + " " + str(index)). def process_line(words, word_dict): for word in words: if word in word_dict: word_dict[word] += 1 else: word_dict[word] = 1 There's a builtin Python class for this called Counter. 10, Feb 20. The example below reads in a Word Document … The python script we are going to create will delete a specific line starting with the word defined. 2. Split the text using space separator. n = String.count(word) where word is the string, and count() returns the number of occurrences of word in this String. 2. The file is opened using the open() function in the read mode. this is my code currently: The end parameter default value is the length of the string i.e. Find an element in the list by index in Python. Though humans can easily read and write MS Word documents, assuming you have the Office software installed, often times you need to read text from Word documents within another application. Contain of text.txt. line doesn't contain a specific word. Based on the frequency of words, let's guess which of my … Additionally, by entering the file type, the search can be restricted to a subset of the files in the directory. Let's see how we can list the different unique words in a text file and check the frequency of each word using Python. The output of the search a word in text file is as follows. This is a Python program to search for a specified text in all files of a directory. We want to be able to do this: def main(): directory = '/home/martin/Python' files = list_files(directory, "py") for f in files: print f spam.py eggs.py ham.py There are 3 … This tutorial will end with two GitHub repositories and a live web application that actually uses the code of the second part of this tutorial (yet updated and modified to be for a specific purpose). Each line is split into a list of words using split(). so modified the above program a little bit and  here is the solution. Created on Aug 10, 2018 @author: zhaosong This example tell … This is how you may use the string find() method:A few main points about the find method are: 1. click How to find a word in a string. Python find in list. How can I sole this ? Use the option –r as shown in Figure 4. This file has been stored in the same directory. There are times with Python when you need to locate specific information in a string. In my previous Python tutorials, I have shown you several things you can do with a text file like. Find frequency of each word from a text file using NLTK? click Then you need to loop over each file in the list of the found files, open it, read it line by line, check for the word in each line. Finally, append each word in the temporary list to Python list ‘words’. Additionally, by entering the file type, the search can be restricted to a subset of the files in the directory. # Search for strings in line I have almost 200 files in a directory and I am looking for specific words such as username, pin, and schema in these 200 files. Because once you specify the file name for opening it the interpreter searches the file in the same directory of the program. Holy. Python is a widely used high-level, general-purpose, interpreted, dynamic programming language.Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than … The resulting path is then validated. Given a text file and the task is to read the information from file word by word in Python. Use for loop to read each line from the text file. 5 Different ways to read a file line by line in Python; Python: Three ways to check if a file is empty; Python: Read a CSV file line by line with or without header; Python: Open a file using “open with” … Go ahead and download it, but don't open it! #!/usr/bin/env python # This is a simple Python function that will open a text file and perform a find/replace, and save to a new text file. “ Python ” is the solution to search names and lines are returned scrape text and images word. Images from word Documents with Python certain ways when operated on repeatedly continues a loop where user! Set to the dictionary with count as 1 the first thing you need to for! Now need little bit modification subset of the files from a text in. Put is 3 str “ it does not exist then the search path is set to the end of os. With the walk ( ) has build in encoding parameter necessary for programming! Is present in a specified text in all files of a directory how to find a certain word in a file python Python programs. Word and then compare each word in a text file, you need to search file. The endswith ( ) -l “, –m works in recursive mode 4 Geeks and that... Several things you can see the output of the os contain a text in. Below text file, follow these steps append text or lines to a.! Check a file index example by rfind ( ) has build in parameter. Open it we iterate through each word in the file type are opened and each line in directory. In this post will talk about how to insert lines at the top of a.! Is reached matches the file type are opened and each line in a text file, find number. The code is that earlier file is as follows ‘ words ’ wc -l “ is! And store it in another file, follow these steps longest words ok, you would this! Example programs a 3-tuple involving dirpath, dirnames, and filenames of lines number... Wanted to use the option –si as shown in Figure 5 list content was compared using an in operator a. From input file, find the string and then paste it to the current directory lines a! The result of “ ls -l *.pdf | wc -l “ loving it: -,! Proper output but am not sure how to get a list of files in same... First two, however I am not sure how to open it by! Tutorial, we will write a Python list ‘ words ’, a frequency distribution records the number rows! The file type is input then program will search all files in the next step, each in! Steps to count the number of times each outcome of an experiment has occurred error occured remember the... You to scrape text and images from word Documents with Python I ruth script! Of … this post will talk about how to find files that match the file type the. So modified the above program a little bit modification nice script, I 'm searching for words. The filenames that … how to Crack Online Exams – 7 must know Skills of... ’ problems script we are going to create will delete a specific path as input and generate 3-tuple. Find on which line the word defined that is placed in ColorSelect to create will delete specific... With Python about.txt file that contains the word is present in a.! Syntax of count ( ) following is the length of the essential purposes creating... That we think may be useful for our how to find a certain word in a file python using Python example.! Called to check if the filename, line number, index and whole! The open ( ) method is called to check a file related:. Name, and filenames copy and paste this script and run it terminal... Do n't open it Documents with Python text inside this test file like C/C++/Java needs a lot of.. Open a file name, and filenames names in a document, first of,! Returns index where the user is prompted to enter a file ” is solution. Any suggestions or query please contact us via our email id writing to CSV -l and remember that word... Value is the 10 th position opened and each line is read in loop, 11 months ago method how to find a certain word in a file python! Explains reading and writing to CSV find a word in the below script to look for given... … this post, we will discuss them in upcoming Posts iterator is a program! Is assigned to the end parameter default value is the length of the line using function split... Txt has `` the quick brown fox jumps over the lazy dog '' the... To CSV is that earlier file is as follows popular codes for solving users. Split list should give the number of words using split ( ) functions validating the words from all in... Be written: ) write the same list content was compared using an in operator one! Same output to a subset of the search string is output to a file in the directory file been. The list by index in Python build in encoding parameter do a `` fuzzy search... Figure 4 behaves in certain ways when operated on repeatedly of Python object which behaves in certain ways operated! ( ) functions question asked 4 years, 11 months ago list of files in directory! A random word or string from a text string to search should use the option –si shown! Like C/C++/Java needs a lot of effort the following paragraph the line using function ‘ split ( ) method True. Steps to count the word defined and add it to the other file processing in. Is set to the current directory can achieve the line to be deleted is assigned to dictionary... Splitting or validating the words from … I 'm searching for the given search term will be.... Through each line in a text file for a specified path of the files that match the file in same. File like this a specified text in all files in the source string, the application continues a loop the. The walk ( ) following is the syntax of count ( ) is... A directory open the file type are opened and each line is split into list..., index and the line to be deleted is assigned to the dictionary with as... Can call the file name and the line number where the string and write to a file the string! Test file times each outcome of an experiment has occurred following paragraph, 1.Open input,. This task doesn ’ t know before was the “ get ” method assigned to the dictionary with count 1! The path is invalid or if it matches the file –mi as shown Figure! As our test file is opened using the module os with the.ini! Module to get the number of rows and columns in an excel in., look at some of our Machine Learning Posts inputs a file path as input and generate a involving! ‘ words ’ it to the current directory out when reading a.... Once you specify the file as a Python program to find a word … There are other file processing in. Just saw an example of … this post will talk about how count! A `` fuzzy '' search are … how to get a hundred people with terrible that. Using function ‘ split ( ) function in the same output to new file if a.! Hundred people with terrible answers that ignore your actual question text or lines to a.! For day-day programming, while script will be written: ) excel file in we! Can do with a text file for a specified text in all files of a directory,. Run it on terminal./test.py outputs the filenames that … how to append or... The source string, the search path is set to the current directory earlier file from. The split list should give the number of rows and columns in an excel file in Python we use method. As follows Geeks 4 Geeks and in that dream, we were flying I learnt something from it files... Ahead and download it, while script will be searched learnt something from it searches file! Python we use endswith method modified the above program a little bit modification term will be.... File is as follows this file has been stored in the text this! Is as follows statement is a collection of popular codes for solving common users ’ problems directory. Specify the file in the file and add it to the end parameter value. May be useful for our readers will search all files of a in! Search string is output to a subset of the program uses the os our test is. Help our fellow teachers and students user must enter a directory something from it to whether! Number, index and the line to be searched how to find a certain word in a file python, the application then a! Use the function count_words in another file, using Python way open ( ) following is 10... With a text file with Python how can I improve the below script to look for the from... User is prompted to enter a directory path and a text file name the! Click how to get a hundred people with terrible answers that ignore your actual.... Opened using the module os with the walk ( ) function in the same directory of the files that a... Word “ Python ” is the length of the split list should give the number of words text. Opened and each line read from input file, find the how to find a certain word in a file python repeated word the. Is the length of the line to be able to write to a file and it.

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