Complete Python exercises

NEEDED IMMEDIATELY. Complete the following Python exercises: #1 Write a Python class to handle reading and writing of a text file. The constructor should at least accept a string containing the path and filename of the file. The class should have methods to do the following: - Write the whole file at once, overwriting anything currently in the file - Append specified text to the end of the file - Read the whole file #2 Write a recursive python function to parse and return a string containing the path to each leaf in the tree structure "tree" in tree.py. The "tree" structure is made of TreeNode objects. Output should be a list of ASCII node names separated by periods in the same order they appear in "tree". Each path should be on its own line, with a "\n" character at the end of each line. Example output ``` [login to view URL] [login to view URL] ``` The function will be called `print_tree`, its first parameter will be a TreeNode object and the function will return a string. The function is to be placed in a file called `[login to view URL]`. It will be able to be called in the following way: ``` output_string = print_tree( tree ); ``` To test the function, simply run [login to view URL], making sure `[login to view URL]` and `[login to view URL]` are in the same directory (from the command line, run `python [login to view URL]`). It will show the output and a SHA1 hash. It would be good if the hash was "21a45fd2fec646e03cecb87e340851ea609cc811".