Python: Using static methods, the __STR__ function

Class man (object):     def __init__ (Self,name,phone):         self.name=name         self.phone=phone     def info_p (self):        return  " person %s has phone %s  "% (Self.name,self.phone) class student (man):     gpa_total = []    def __init__ (SELF,NAME,PHONE,GPA):         man.__init__ (Self,name,phone)          self.gpa=gpa        student.gpa_total.append (SELF.GPA)          @staticmethod          Def mean_gpa ():             return sum ( Student.gpa_total)  / float(Len (student.gpa_total))     def info_gpa (self):         reply = self. Info_p ()         reply +=  "\n      and is student with gpa %s  "%self.gpa          return reply     def __str__ (self):         return self.info_gpa () Class employee (man):     emp_total  = []    def __init__ (Self,name,phone,empolyee):         man.__init__ (Self,name,phone)              self.empolyee=empolyee        employee.emp_ Total.append (self.empolyee)          @staticmethod    &nbsP;    def total_salary ():             return sum (employee.emp_total)     def info_em (self):         reply = self. Info_p ()         reply +=  "\n    and  is an employee with salary %s "% (self.empolyee)          return replyclass staff (Employee):     def __init__ (Self, Name,phone,empolyee,staff):         employee.__init__ (Self,name,phone, Empolyee)         self.staff=staff     def  info_staff (self):         reply = self.info_em ()                  reply +=  "\n     and is staff with title  %s "%self.staff        return reply     Def __str__ (self):         return self.info_staff () class  professor (Employee):     def __init__ (Self,name,phone,empolyee,mingchen):         employee.__init__ (Self,name,phone,empolyee)          self.mingchen=mingchen    def info_m (self):         reply = self.info_em ()          reply +=  "\n     and is a professor assigned to  class %s "%self.mingchen        return reply     def __stR__ (self):         return self. Info_m () people = [student ("Sandy", "326-8324", 3.65), Student ("Jordan", "632-7434", 3.1), professor (" Leslie "," 985-2363 ", 50000.00," info 501 "), Staff (" Alex "," 743-4638 ", 25000.00," editor ")]print " these  are the people in the university:  "For person in people:     print personprint print  "Our total university payroll  budget is : " +str (Employee.total_salary ()) print " our average student  gpa is : " +str (Student.mean_gpa ())

these are the people in the university: person sandy has  phone 326-8324      and is student with gpa 3.65  person jordan has phone 632-7434      and is  Student with gpa 3.1 Person Leslie has phone 985-2363      and is an Employee with salary 50000.0      and is a Professor assigned to class Info 501Person  alex has phone 743-4638     and is an employee  with salary 25000.0     and is staff with title  editorour total university payroll budget is :75000.0our average  student gpa is :3.375 

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Python: Using static methods, the __STR__ function