def set_salary(self, salary):
    ' Method saves a new salary for the person.\n\n        :param salary: new salary for the person, string\n        :return: None\n        '
    if (salary >= 0):
        self.salary = salary
Method saves a new salary for the person.

:param salary: new salary for the person, string
:return: None
def set_salary(self, salary):
    ' Method saves a new salary for the person.\n\n        :param salary: new salary for the person, string\n        :return: None\n        '
    if (salary >= 0):
        self.salary = salary