AttributeError: type object 'object' has no attribute '__getattr__'

john_hobbyist

Hello I have made a PyQt application where I load UAV images and I display the coordinates according to where the mouse pointer shows. I use this code: https://gis.stackexchange.com/questions/299571/converting-a-pixel-coordinate-in-geotiff-to-a-latitude-and-longitude inside a try...except. When running the code, I get this error. Any ideas?

Traceback (most recent call last):
  File "/home/john/.local/lib/python3.8/site-packages/matplotlib/cbook/__init__.py", line 224, in process
    func(*args, **kwargs)
  File "/home/john/.local/lib/python3.8/site-packages/matplotlib/backend_bases.py", line 3005, in mouse_move
    self.set_message(s)
  File "code.py", line 151, in set_message
    gt = tif.GetGeotransform()
  File "/home/john/.local/lib/python3.8/site-packages/osgeo/gdal.py", line 2045, in <lambda>
    __getattr__ = lambda self, name: _swig_getattr(self, Dataset, name)
  File "/home/john/.local/lib/python3.8/site-packages/osgeo/gdal.py", line 74, in _swig_getattr
    return _swig_getattr_nondynamic(self, class_type, name, 0)
  File "/home/john/.local/lib/python3.8/site-packages/osgeo/gdal.py", line 69, in _swig_getattr_nondynamic
    return object.__getattr__(self, name)
AttributeError: type object 'object' has no attribute '__getattr__'

Part of the code inside try...except:

. . . 

import gdal
tif = gdal.Open('UAV.tif')
gt = tif.GetGeotransform()

x_min = gt[0]
x_size = gt[1]
y_min = gt[3]
y_size = gt[5]

mx, my = x, y # I feed x,y from pixel coordinates
px = mx * x_size + x_min #x pixel
py = my * y_size + y_min #y pixel

. . .

JonB

@john_hobbyist
I tried Googling the unique-looking in _swig_getattr_nondynamic. I suggest you do so to look at the several hits. Add osgeo to it (in _swig_getattr_nondynamic osgeo) and you get some just like yours. I don't know whether this indicates there is a problem in something you do in your code or is inherent in the library you use, you'll have to investigate or ask in an appropriate forum.

SGaist

Hi,

The first thing to check is the validity of your "tif" object.

As noted by @JonB, this looks like an issue with gdal so you should ping them.

john_hobbyist

From google search results seems to be a bug...I am searching it more though..

JonB

@john_hobbyist said in AttributeError: type object 'object' has no attribute '__getattr__':

inside a try...except. When running the code,

One thing. If you're diagnosing an error the last thing you want is a try: ... except: ... around the code. Comment that out, let it crash. The traceback you get should emanate from some line in your code, you might as well know which one.

tif = gdal.Open('UAV.tif')

Is this succeeding?

john_hobbyist

@JonB said in AttributeError: type object 'object' has no attribute '__getattr__':

@john_hobbyist said in AttributeError: type object 'object' has no attribute '__getattr__':

inside a try...except. When running the code,

One thing. If you're diagnosing an error the last thing you want is a try: ... except: ... around the code. Comment that out, let it crash. The traceback you get should emanate from some line in your code, you might as well know which one.

tif = gdal.Open('UAV.tif')

Is this succeeding?

I have put print commands before and after this line. It crashes at this specific point. It does not execute this command...

JonB

@john_hobbyist
Well, it's not that it does not execute it, it is that it does execute it and the error occurs during execution!

If that is a file(?), please ensure it is accessible via that path before you go any further.

john_hobbyist

@JonB said in AttributeError: type object 'object' has no attribute '__getattr__':

@john_hobbyist
Well, it's not that it does not execute it, it is that it does execute it and the error occurs during execution!

If that is a file(?), please ensure it is accessible via that path before you go any further.

Sorry, I was just checking 2-3 different .tif. Again the same message.

john_hobbyist

A small correction, the code is not running inside the try...except block. I have removed the try...except block, so the errors' line is for the code not running inside try..except block.