A program that display how a class is made in python.
The course has attributes to hold the department, number, title, students, attendance lists, and instructor list. There is a method to mark attendance, and check if a individual student is present. Additionally a magic method is used to check prerequisites.
| #!/usr/bin/env python -tt | |
| """ File: courses.py """ | |
| class Course: | |
| """Summary line: The class will create a object with perameters associated with a university class | |
| Description: Course creates a object that represents a university course. It controls the attendance, | |
| instructors, and desctiption. | |
| """ | |
| def __init__(self, department="N/A", number="N/A", title="N/A", *instructors): | |
| self.department = department | |
| self.number = number | |
| self.title = title | |
| self.students = set() | |
| self.attendance_List = {} | |
| self.instructors_List = instructors | |
| def mark_attendance(self, students): | |
| """Summary line: Mark if a students attendance in a dictionary | |
| Description: For every student in list, ask the user to input weither they | |
| are absent or present. | |
| """ | |
| print "type a for absent or p for present" | |
| for x in students: | |
| print x, "?" | |
| status = raw_input("> ") | |
| if 'p' in status: | |
| self.attendance_List[x] = 'present' | |
| elif 'a' in status: | |
| self.attendance_List[x] = 'absent' | |
| else: | |
| self.attendance_List[x] = 'N/A' | |
| def is_present(self, student): | |
| """Summary line: Check if a student is present | |
| Description: The attendance list dictionary is used to look up a students | |
| attendance and if present true is returned | |
| """ | |
| try: | |
| if self.attendance_List[student] == 'present': | |
| return True | |
| # If a key that is not present is attempted to be accesed | |
| except KeyError: | |
| return False | |
| else: | |
| return False | |
| def __le__(self, other_Course): | |
| """Summary line: Use magic method to check a class prerequsit | |
| Description: If a class object has a number that is greater than another it is not | |
| determined to be a prerequsit. If the class number is smaller than another class | |
| the smaller is a prerequsit. | |
| """ | |
| # Remove the leffers from the ourse number 110A -> 110 | |
| selfNum = "".join([digit for digit in self.number if digit.isdigit()]) | |
| otherNum = "".join([digit for digit in other_Course.number if digit.isdigit()]) | |
| return selfNum <= otherNum | |
| if __name__ == '__main__': | |
| """Summary line: Show examples of the Course class. | |
| Description: Examples of the different methods that the course class contains. | |
| """ | |
| ece_112 = Course("ECE", "112", 'Communication electronics', "Laft", "Seipal") | |
| eec_100 = Course() | |
| # Add students to the list for the class | |
| ece_112.students.update(["zach", "mack"]) | |
| ece_112.students.add("jack") | |
| print ece_112.students | |
| # Mark Attendance | |
| ece_112.mark_attendance(ece_112.students) | |
| print ece_112.attendance_List | |
| # check attendance_List | |
| print ece_112.is_present('zach') | |
| print ece_112.is_present('mack') | |
| print ece_112.is_present('jack') | |
| # Check if prerequesit | |
| print ece_112 <= eec_100 | |
| print eec_100 <= ece_112 | |
| # Display the list of instructors | |
| print ece_112.instructors_List | |
Example:
> python courses.py
> set(['mack', 'jack', 'zach'])
> type a for absent or p for present
> mack ?
> p
> jack ?
> a
> zach ?
> p
> {'mack': 'present', 'jack': 'absent', 'zach': 'present'}
> True
> True
> False
> False
> True
> ('Laft', 'Seipal')