Originally posted by **commuter77** March 21, 2023
I tried the sample code from
https://pypdf2.readthedocs.io/en/stable/user/extract-images.html
but I got TypeError: argument of type 'NullObject' is not iterable.
Anyone has the same issue ?
I confirmed I've an image in my pdf file.
the error in details:
```
testpdf2.py", line 14, in
num_of_images = len(page.images())
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\_page.py", line 481, in images
extension, byte_stream = _xobj_to_image(x_object[obj])
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\filters.py", line 576, in _xobj_to_image
data = x_object_obj.get_data() # type: ignore
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\generic\_data_structures.py", line 827, in get_data
decoded._data = decode_stream_data(self)
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\filters.py", line 538, in decode_stream_data
data = CCITTFaxDecode.decode(data, stream.get(SA.DECODE_PARMS), height)
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\filters.py", line 463, in decode
parms = CCITTFaxDecode._get_parameters(decode_parms, height)
File "C:\mySoft\Python39\lib\site-packages\PyPDF2\filters.py", line 441, in _get_parameters
if CCITT.COLUMNS in decode_parm:
TypeError: argument of type 'NullObject' is not iterable
```
Discussed in https://github.com/py-pdf/pypdf/discussions/1732
@pubpub-zz Thank you for fixing the issue :pray:
The fix was just merged to
main. It will be released tomorrow inpypdf > 3.6.0I've prepare a sample file getting rid of text in order to make the document more acceptable. tt1.pdf