Python: AttributeError while creating a new property of an object via assignment -


i following assignment (file class):

file_object = file() file_object.file_type = file_type

and get:

attributeerror: 'file' object has no attribute 'file_type'

how can be?

i thought, add attributes dynamically (and worked before).

i've upgraded python 2.7.13, , have problem.

file (in case) has __dict__ , not have __slot__:

>>> print dir(file) ['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'factory', 'method_name']

i think code reading file() object, not class - https://docs.python.org/2.4/lib/bltin-file-objects.html.


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