- self.filename + "." + old_backup,
- self.filename + "." + old_backup + 1
+ self.filename + "." + str(old_backup),
+ self.filename + "." + str(old_backup + 1)
)
if not os.path.exists(self.filename + ".0"):
os.rename(self.filename, self.filename + ".0")
)
if not os.path.exists(self.filename + ".0"):
os.rename(self.filename, self.filename + ".0")