Problem 2 (Text Analysis) Create a Python file called analysis.py that will perform text analysis on files. For this question assume that each space in the document separates one word from the next-so any use of the term "word' means a string that occurs between two spaces (or in two special cases, between the start of the file and a space, or between a space and the end of the file). You can also assume there is no punctuation or other symbols present in the files only words separated by spaces. If you want to see examples of the type of text, look in the testfile txt files included on cuLearn You must implement and test the following functions inside of your analysis.py file 1) load (str)-Takes a single string argument, representing a filename. The program must open the file and parse the text inside. This function will need to initialize the variables (e.g., lists, dictionaries, other variables) you need to solve the remainder of the problem. This function should also remove any information stored from a previous file (i.e., you start from nothing every time load is called) 2) commonword (list) -T a single list-type argument which contains string values. akes The function should operate as follows: a. If the list is empty or none of the words specified in the list occur in the text that has been loaded, the function should return None. b. Otherwise, the function should return the word contained in the list that occurs most often in the loaded text or any one of the most common, in the case of a tie 3) commonletter(list) Takes a single list-type argument which contains single character strings (i.e., etters/characters). The function should operate as follows: a. If the list is empty or none of the letters specified in the list occur in the text that has been loaded, the function should return None. b. Otherwise, the function should return the letter contained in the list that occurs most often in the loaded text or any one of the most common, in the case of a tie 4) commonpair(str) T a single string argument, representing the first word. This akes function should return the word that most frequently followed the given argument word (or one of, in case of ties). If the argument word does not appear in the text at