import json

def open_file(filepath):
    with open(filepath, 'r', encoding='utf-8') as infile:
        return infile.read()

def save_file(filepath, content):
    with open(filepath, 'w', encoding='utf-8') as outfile:
        outfile.write(content)

def append_file(filepath, content):
     with open(filepath, 'w', encoding='utf-8') as outfile:
        outfile.write(content)