human
Solve the following python programming problem given the following code:
def _offset_str(self) : 
    def get_str(td) : 
        off_str = '' 
        if (td.days > 0) : 
            off_str += (str (td.days) + 'D') 
if (td.seconds > 0) : 
            s = td.seconds 
            hrs = int ((s / 3600)) 
            if (hrs != 0) : 
                off_str += (str (hrs) + 'H') 
                s -= (hrs * 3600) 
mts = int ((s / 60)) 
            if (mts != 0) : 
                off_str += (str (mts) + 'Min') 
                s -= (mts * 60) 
if (s != 0) : 
                off_str += (str (s) + 's') 
if (td.microseconds > 0) : 
            off_str += (str (td.microseconds) + 'us') 
return off_str 
if isinstance (self.offset, timedelta) : 
        zero = timedelta (0, 0, 0) 
        if (self.offset >= zero) : 
            off_str = ('+' + get_str (self.offset)) 
else : 
            off_str = ('-' + get_str ((- self.offset))) 
return off_str 
else : 
        return ('+' + repr (off_str.offset)) 

    
    

    Fix the buggy line: return ('+' + repr (off_str.offset))
assistant
#Here is Python program to fix the buggy line: return ('+' + repr (off_str.

return ('+' + repr (self.offset))