Grant SP Command

class CmdGrantSP(Command):
    key = '@grant-sp'
    '''
    Usage: @grant-sp <person> <number> <skill>
    '''

    def parse(self):
        args = self.args.lstrip()
        try:
            self.person, self.number, self.skill = args.split(" ", 2)
        except ValueError:
            self.caller.msg("Requires 3 arguments. Usage: @grant <person> <number> <skill>")
            raise InterruptCommand
        try:
            self.number = int(self.number)
        except ValueError:
            self.caller.msg("The number must be an integer.")
            raise InterruptCommand

    def func(self):
        char = self.caller.search(self.person)
        num = self.number
        skill = self.skill
        skill = char.attributes.get(skill)
        skill['total_sp'] += num
        self.caller.msg(f'Granted {char} {num} skillpoints in {self.skill}.')