for 8 c and d

import os

def second_part():
    for file_name in os.listdir():
        if file_name.startswith('NENE'):
            file_ptr = open(file_name)
            pass_to_mean = get_mean(file_ptr)
            # Reset file pointer to initial position
            file_ptr.seek(0)
            pass_to_highest = get_highest(file_ptr)
            # Reset file pointer to initial position
            file_ptr.seek(0)
            pass_to_lowest = get_lowest(file_ptr)
            # Reset file pointer to initial position
            file_ptr.seek(0)
            pass_to_length_warning = get_length(file_ptr)
            print('The name of the file is',file_name,'its highest value is',pass_to_highest,'its lowest value is',pass_to_lowest,'its mean is ',pass_to_mean,'and it is',pass_to_length_warning)

def get_mean(my_file):
    my_list = []
    for my_line in my_file:
        my_line = my_line.strip()
        my_line = float(my_line)
        my_list.append(my_line)
    my_mean = sum(my_list)/len(my_list)
    return my_mean

def get_highest(my_file):
    my_list = []
    for my_line in my_file:
        my_line = my_line.strip()
        my_line = float(my_line)
        my_list.append(my_line)
    my_highest = max(my_list)
    return my_highest

def get_lowest(my_file):
    my_list = []
    for my_line in my_file:
        my_line = my_line.strip()
        my_line = float(my_line)
        my_list.append(my_line)
    my_lowest = min(my_list)
    return my_lowest


def get_length(my_file):
    my_list = []
    for my_line in my_file:
        my_line = my_line.strip()
        my_line = float(my_line)
        my_list.append(my_line)
    length = len(my_list)
    x = 'This is not long enough'
    y = 'This is long enough'
    if length <= 300:
        return x
    elif length >= 300:
        return y

second_part()