Counter variable for class
- by George
I am having problem getting this piece of code to run. The class is Student which has a IdCounter, and it is where the problem seems to be. (at line 8)
class Student:
def __init__(self):
# Each student get their own student ID
idCounter = 0
self.gpa = 0
self.record = {}
# Each time I create a new student, the idCounter increment
idCounter += 1
self.name = 'Student {0}'.format(Student.idCounter)
classRoster = [] # List of students
for number in range(25):
newStudent = Student()
classRoster.append(newStudent)
print(newStudent.name)
I am trying to have this idCounter inside my Student class, so I can have it as part of the student's name (which is really an ID#, for example Student 12345. But I have been getting error.
Traceback (most recent call last):
File "/Users/yanwchan/Documents/test.py", line 13, in <module>
newStudent = Student()
File "/Users/yanwchan/Documents/test.py", line 8, in __init__
idCounter += 1
UnboundLocalError: local variable 'idCounter' referenced before assignment
I tried to put the idCounter += 1 in before, after, all combination, but I am still getting the referenced before assignment error, can you explain to me what I am doing wrong? Thank you
Edit: Provided the full code I have
