class inheritance and property

[heddapacman]

Hello
im trying to manipulate a large amount of data on the form 'date,time, movement'. What i first do in the class Corrections is delete dataerrors. In the next class SunriseSunset i want to inherit these updated lists of date, time and movements to do some plotting

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bird=open('birds.dat','r')   movements=[] date=[] time=[] for n in enumerate(bird):     c=n[1].split()     date.append(c[0])     time.append(c[1])     movements.append(int(c[2]))   class Corrections:     def __init__(self, movement,date,time):         self.date=date         self.movements=movements         self.time=time     @property        def DataError (self):         LN=[]         for n in range(len(time)-1):             LN.append(int(time[n][0:2])*24*60+int(time[n][3:5])*60+int(time[n][6:8]))         for k in range(len(LN)-1):             if LN[k+1]-LN[k] > 160:                 LN.insert(k+1,LN[k]+120)                 date.insert(k+1,date[k])                 movements.insert(k+1,movements[k])         for n in range(0, len(movements)-1):             if movements[n+1]-movements[n]>4:                 movements[n+1]=movements[n]+4             if movements[n+1]<movements[n]:                 movements[n+1]=movements[n]         movements=np.diff(movements)         self.date=date         self.time=LN         self.movements=movements       class SunriseSunset(Corrections):     def __init__(self, givendate, date, movements, time):         self.givendate=givendate         self.date=date         self.movements=movements         self.time=time     #@property     def plotting(self):         D=[]         T=[]         M=[]         for i in [i for i,x in enumerate(self.date) if x ==self.givendate]:             return i             for n in range (0,2161):                 D.append(self.date[i+n])                 M.append(self.movements[i+n])                 T.append(self.time[i:i+n])             return self.D, self.M, self.T         print(T)         print(M)         plot(T,M)         plt.show()   S = SunriseSunset('2015-01-25', date, movements, time)

[heddapacman]

Ive given up on doing classes and made funktions instead but i still fail!!
this is how in trying to work it out

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test=open('testing.dat','r')   bird=open('birds.dat','r')               def DataError (data):     movements=[]     date=[]     time=[]     for n in enumerate(data):         c=n[1].split()         date.append(c[0])         time.append(c[1])         movements.append(int(c[2]))     LN=[]     for n in range(len(time)-1):         LN.append(int(time[n][0:2])*24*60+int(time[n][3:5])*60+int(time[n][6:8]))     for k in range(len(LN)-1):         if LN[k+1]-LN[k] > 160:             LN.insert(k+1,LN[k]+120)             date.insert(k+1,date[k])             movements.insert(k+1,movements[k])     for n in range(0, len(movements)-1):         if movements[n+1]-movements[n]>4:             movements[n+1]=movements[n]+4         if movements[n+1]<movements[n]:             movements[n+1]=movements[n]         movement=np.diff(movements)         time=LN     return time, date, movements     #print(DataError(test))   def plotting(data, givendate):         D=[]         T=[]         M=[]         DataError(data)         for i in [i for i,x in enumerate(date) if x==givendate]:             for n in range (0,2161):                 D.append(date[i+n])                 M.append(movements[i+n])                 T.append(time[i:i+n])         return D, M, T         #sun = city.sun(date=datetime.date(2009, 4, 22), local=True)         #plot( str(sun['sunrise']),M)         #plot( str(sun['sunset']),M)           print(plotting(bird,'2015-01-25'))