{"id":416,"date":"2023-02-13T10:52:24","date_gmt":"2023-02-13T10:52:24","guid":{"rendered":"https:\/\/tinyytopic.com\/?p=416"},"modified":"2023-02-13T10:51:12","modified_gmt":"2023-02-13T10:51:12","slug":"find-a-word-in-a-text-file-using-python-ready-to-use-function","status":"publish","type":"post","link":"https:\/\/tinyytopic.com\/index.php\/2023\/02\/13\/find-a-word-in-a-text-file-using-python-ready-to-use-function\/","title":{"rendered":"Find a Word in a Text file using Python ready-to-use function"},"content":{"rendered":"\n

How to find a Word in a Text file using Python ready-to-use function?<\/mark><\/h5><\/div>\n\n\n\n

Ready to use Python function to find a word in a text file:<\/p>\n\n\n\n

def find_string_in_text_file(txtFile, findWord, case_sensitive=False):\n    # Check if 'findWord' string exists in text file\n    with open(txtFile, 'r') as file:\n        lines = file.readlines()\n        for row in lines:\n            # remove new line character if exists\n            row = row.replace(\"\\n\", \"\")\n            \n            # change to loawer case if case senstive is false\n            if case_sensitive == False:\n                row = row.lower()\n                findWord = findWord.lower()\n            \n            # Check string is matching and length of the strings are matching\n            if row.find(findWord) >= 0:\n                return True\n        return False # if no match, return False<\/pre>\n\n\n\n
Write your main code as a sample below, and save a text file named ‘test python.txt’ in the same directory by the inclusion of the word ‘request’ in the text file.<\/p>\n\n\n\n
print(find_word_in_text_file(\"test python.txt\", \"request\"))<\/code><\/pre>\n\n\n\n
The output of the code is,<\/p>\n\n\n\n
True<\/code><\/pre>\n\n\n\n

How does the function work?<\/mark><\/h5><\/div>\n\n\n\n
This code defines a function named “find_string_in_text_file”. The function takes three arguments:<\/p>\n\n\n\n
    \n
  1. The txtFile<\/code><\/strong>: The name of the text file that needs to be searched.<\/li>\n\n\n\n
  2. The findWord<\/code><\/strong>: The string that needs to be searched in the text file.<\/li>\n\n\n\n
  3. The case_sensitive<\/code><\/strong>: A boolean value that determines if the search should be case-sensitive or not. If it’s set to False, the code will search for the string in a case-insensitive manner.<\/li>\n<\/ol>\n\n\n\n
    The function uses the with open<\/code><\/strong> statement to open the text file specified in the txtFile<\/code><\/strong> argument. It then reads all the lines of the file using the readlines <\/strong><\/code>method and stores the lines in a list called lines<\/code><\/strong>.<\/p>\n\n\n\n

    Next, the code uses a for loop to iterate through each line in the lines <\/code><\/strong>list. For each line, it removes the newline character (if it exists) using the replace <\/code><\/strong>method and converts the line to lowercase if the case_sensitive <\/code><\/strong>argument is set to False. This ensures that the search for the string is case-insensitive.<\/p>\n\n\n\n

    The find<\/strong> <\/code>method is then used to check if the findWord <\/code><\/strong>string is present in the current line. If the find <\/code><\/strong>method returns a value greater than or equal to 0, it means that the string was found, and the function returns True<\/code><\/strong>.<\/p>\n\n\n\n

    If the loop completes without finding a match, the function returns False<\/code><\/strong>, indicating that the string was not found in the text file.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Ready to use Python function to find a word in a text file: Write your main code as a sample below, and save a text file named ‘test python.txt’ in the same directory by the inclusion of the word ‘request’ in the text file. The output of the code is, This code defines a function […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[12,17],"tags":[14,13,16,15,21],"class_list":["post-416","post","type-post","status-publish","format-standard","hentry","category-python","category-useful-function","tag-programming-language","tag-python","tag-python-code","tag-python-sample-code","tag-text-file"],"aioseo_notices":[],"yoast_head":"\nFind a Word in a Text file using Python ready-to-use function - tinyytopic.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tinyytopic.com\/index.php\/2023\/02\/13\/find-a-word-in-a-text-file-using-python-ready-to-use-function\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Find a Word in a Text file using Python ready-to-use function - tinyytopic.com\" \/>\n<meta property=\"og:description\" content=\"Ready to use Python function to find a word in a text file: Write your main code as a sample below, and save a text file named ‘test python.txt’ in the same directory by the inclusion of the word ‘request’ in the text file. 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