postInstallationSettings

#!/usr/bin/env python3

print('')
vars = {'SERVER_IP'     : '',
        'SSH_COMMAND'   : ''}
for key in ('SERVER_IP', 'SSH_COMMAND'):
    while not vars[key]:
        vars[key] = input(('Enter your server name/IP (e.g. 192.168.1.1 or example.com): ', 'Enter your command to open terminal emulator and connect via SSH (e.g. gnome-terminal -x ssh USER@SERVER): ')[key == 'SSH_COMMAND'])
vars['UPDATE_INTERVAL'] = input('Enter timeout between automatic ping executions (in seconds, 60 is default): ')

def main():
    FILE = 'server-status-indicator'
    file_data = read_file(FILE)
    for key in vars.keys():
        if vars[key]:
            file_data = change_value(key, file_data)
    write_to_file(FILE, file_data)
def change_value(key, file_data):
    for i in range(len(file_data)):
        if key in file_data[i]:
            if key != 'UPDATE_INTERVAL':
                quote = "'"
            else:
                quote = ""
            file_data[i] = key + " = " + quote + vars[key] + quote + "\n"
            return file_data
def read_file(file):
    list = open(file, 'r', encoding='utf-8')
    array = [string[:len(string)-1]+'\n' for string in list]
    list.close()
    return array
def write_to_file(file, data, method='w'):
    list = open(file, method, encoding='utf-8')
    list.writelines(data)
    list.close()

if __name__ == "__main__":
    main()