__peter__ at web.de
Thu Apr 1 13:20:57 CEST 2010
Javier Montoya wrote:
> Is it possible to sort the dictionary by the student's grades in
> descending order?
You cannot sort dictionaries, but you can put dictionary items into a list
and then sort that.
Assumming that you have a dictionary student_dict that maps student IDs to
Student instances and a function get_grade() to find a student's grade you'd
return course[student.student_id].grade # or whatever it takes
students_by_grade = sorted(student_dict.itervalues(), key=get_grade,
for student in students_by_grade:
print student.first_name, student.last_name
However, problems like the above are normally handled best using a SQL
database, so I recommend that you have a look at
More information about the Python-list