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.