Item lists and Split data

Part 2 (2019)
1

hi all
please help understand below things in Split dataclass in notebook 08_Datablock
class SplitData():
def init(self, train, valid):
print(‘splid data’)
self.train,self.valid = train,valid

def __getattr__(self,k): 
  print('__getattr',k)
  return getattr(self.train,k)
#This is needed if we want to pickle SplitData and be able to load it back without recursion errors
def __setstate__(self,data:Any): self.__dict__.update(data) 

@classmethod
def split_by_func(cls, il, f):
    print('il',il,'cls',cls)
    lists = map(il.new, split_by_func(il.items, f))
    print('lists',cls)
    return cls(*lists)

def __repr__(self): return f'{self.__class__.__name__}\nTrain: {self.train}\nValid: {self.valid}\n'

  1. At what point of time we call in __get_attri and set_attribute
    I get below output after print(splid data)
    __getattr ipython_canary_method_should_not_exist
    __getattr ipython_display
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_mimebundle
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_html
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_markdown
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_svg
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_png
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_pdf
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_jpeg
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_latex
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_json
    __getattr ipython_canary_method_should_not_exist
    __getattr repr_javascript
    Followed by output of repr

  2. which function does getattribute invokes is it same __get_attribute ?