Das deutsche Python-Forum

Code: Alles auswählen

class list(list):
    def __init__(self,value=[]):
        self.value=value
        print value
        
    def __get_id__(self):
        out=[]
        for i in self.value:
            out.append(i.id)
        return out
    id = property(__get_id__)

Code: Alles auswählen

class []([]):
    def __init__(self):
        print "Hallo"
          
  File "<ipython-input-11-e5b4f05dd611>", line 1
    class []([]):
SyntaxError: invalid syntax

Code: Alles auswählen

class l(list):
    
    def __init__(self):
        self.values=self

    def __getattr__(self, attr):
        output=self.values
        try:
            for i in range(len(self.values)):
                output[i]=getattr(output[i],attr)
            
            return output
        except: 
            raise AttributeError

Code: Alles auswählen

from operator import attrgetter
class MyList(list):
    def __getitem__(self, num):
        try:
            return list.__getitem__(self, num)
        except IndexError:
            # hier kommt Deine Anpassung rein z.B.
            return map(attrgetter('X'), [a, b])

Code: Alles auswählen

from operator import attrgetter
class MyList(list):
    def __getitem__(self, num):
        try:
            return list.__getitem__(self, num)
        except IndexError:
            # also ungefähr so
            return map(attrgetter(num), self)
    
a=MyList(M.a)
print [i.x for i in M.a]
->[array([2, 0, 0]), array([2, 1, 0]), array([3, 0, 0]), array([1, 0, 0]), array([4, 0, 0])]

print a.x
->AttributeError: 'MyList' object has no attribute 'x'

Code: Alles auswählen

from operator import attrgetter
class MyList(list):
    def __getattribute__(self, name):
        try:
            return list.__getattribute__(self, name)
        except AttributeError:
            return map(attrgetter(name), self)