Python code to work with phrases

I need a code in python to search and replace words and filter phrases from a txt file based on its words. There is a large file [login to view URL] with text like this: Life is a characteristic that distinguishes physical entities that have biological process. Various forms of life exist, such as archaea, and bacteria. Biology is the science that studies life. In this case we have 3 phrases in one paragraph: 1) Life is a characteristic that distinguishes physical entities that have biological process. 2) Various forms of life exist, such as archaea, and bacteria. 3) Biology is the science that studies life. It means, a phrase is a group of words that ends with . ? or ! ------------ We need 3 functions called f1, f2 and f3. Function 1 (f1): search and replace This function is basically to search and replace words. There is a file called [login to view URL] with words like this: He's=He is Yo=You The code must find the word "He's" and replace with "He is" and so on for the other words. It is case sensitive. Search only for the entire word, for example, don't replace the word "Young" by "Youung". The command line must be: C:/user/.../python310: python [login to view URL] [login to view URL] [login to view URL] f1 Change and save the file [login to view URL] with the replacements. Function 2 (f2) filter phrases There is a file [login to view URL] with many words, like: You Me To Are How Day And This Is The code will filter only the phrases that all its words are in the [login to view URL] file. In this example the phrase "How are you?" achieved the criteria and "how are you doing?" do not, because the word doing is not listed. The command line must be C:/user/.../python310: python [login to view URL] [login to view URL] [login to view URL] f2. It creates the file [login to view URL] This file must contain the list of phrases that achieved the criteria and with no repetition (don't list the same phrase twice). Function 3 (f3): filter phrases There is a file [login to view URL] with some words, like: You Do Day The code must filter the phrases that have at least one word from words_2.txt. The phrase "did you know?" is ok, because the word "you" is in the file words_2.txt. The phrase "this is me." is not ok, no one word is in the file [login to view URL] The command line must be: C:/user/.../python310: python [login to view URL] [login to view URL] [login to view URL] f3 It must create the file [login to view URL] with the phrases filtered. Here is a database example: [login to view URL] Don't list the same phrase twice.