[EMAIL PROTECTED] wrote:
> Hi all.
>
> I have to put together some code that reads high scores from a saved
> file, then gives the user the opportunity to add their name and score
> to the high scores list, which is then saved.
>
> Trouble is, I can't tell the program to read a file that doesn't
> exist, that generates an error.
>
> So I must have a file created, problem HERE is everytime the program
> is run, it will overwrite the current list of saved high scores.
>
> Advice would be much appreciated.
You can run this small script a few times to see that the file does not get
deleted
hg
import shelve
class Grades:
def __init__(self):
self.GRADES = 'GRADES'
self.m_gdb = shelve.open('MYGRADES.dat')
try:
self.m_grades = self.m_gdb[self.GRADES]
except:
self.m_grades = []
self.m_gdb[self.GRADES] = self.m_grades
self.m_gdb.close()
def Add(self, p_grade):
self.m_gdb = shelve.open('MYGRADES.dat')
self.m_grades.append(p_grade)
self.m_gdb[self.GRADES] = self.m_grades
self.m_gdb.close()
def Grades(self):
return self.m_grades
l_o = Grades()
print l_o.Grades()
l_o.Add(10)
print l_o.Grades()
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