Can't concat str to bytes

[gtdrakeley]

When loading a pdf via pdf.load(), specifically the Pathfinder 2E playtest pdf, this error is returned:

  File "<stdin>", line 1, in <module>
  File "C:\Users\Graham Drakeley\.virtualenvs\Downloads-jPJuT-kW\lib\site-packages\pdfquery\pdfquery.py", line 385, in load
    self.tree = self.get_tree(*_flatten(page_numbers))
  File "C:\Users\Graham Drakeley\.virtualenvs\Downloads-jPJuT-kW\lib\site-packages\pdfquery\pdfquery.py", line 490, in get_tree
    page.set('page_label', self.doc.get_page_number(n))
  File "C:\Users\Graham Drakeley\.virtualenvs\Downloads-jPJuT-kW\lib\site-packages\pdfquery\pdfquery.py", line 271, in get_page_number
    page_label = label_format['P']+page_label
TypeError: can't concat str to bytes```

[peturjokull]

I had the same error so I added decode to the byte part and it worked for me

page_label = label_format['P'].decode('utf-8')+page_label

[gskriptor]

@peturjokull I tried your fix, but my script is just stuck running. When I stop it with ctl C I get this error message. My script is from the pdfquery examples. Seems like there is something up with the pdf.load() funciton.

^CTraceback (most recent call last):
File "loadtest.py", line 4, in
pdf.load()
File "/usr/local/lib/python3.7/dist-packages/pdfquery/pdfquery.py", line 385, in load
self.tree = self.get_tree(*_flatten(page_numbers))
File "/usr/local/lib/python3.7/dist-packages/pdfquery/pdfquery.py", line 487, in get_tree
for n, page in pages:
File "/usr/local/lib/python3.7/dist-packages/pdfquery/pdfquery.py", line 608, in
return (self.get_layout(page) for page in self._cached_pages())
File "/usr/local/lib/python3.7/dist-packages/pdfquery/pdfquery.py", line 601, in get_layout
self.interpreter.process_page(page)
File "/usr/local/lib/python3.7/dist-packages/pdfminer/pdfinterp.py", line 842, in process_page
self.device.end_page(page)
File "/usr/local/lib/python3.7/dist-packages/pdfminer/converter.py", line 48, in end_page
self.cur_item.analyze(self.laparams)
File "/usr/local/lib/python3.7/dist-packages/pdfminer/layout.py", line 680, in analyze
self.groups = self.group_textboxes(laparams, textboxes)
File "/usr/local/lib/python3.7/dist-packages/pdfminer/layout.py", line 647, in group_textboxes
if c == 0 and isany(obj1, obj2):
File "/usr/local/lib/python3.7/dist-packages/pdfminer/layout.py", line 627, in isany
objs = set(plane.find((x0, y0, x1, y1)))
File "/usr/local/lib/python3.7/dist-packages/pdfminer/utils.py", line 322, in find
for k in self._getrange(bbox):
File "/usr/local/lib/python3.7/dist-packages/pdfminer/utils.py", line 285, in _getrange
for x in drange(x0, x1, self.gridsize):
KeyboardInterrupt

[wennroy]

I just encountered the same issue here. And I found the pdfquery.py script on current Github had successfully solved this issue, but the newest release package version v0.4.3 won't work. Try to compile the newest code and it should work.

To compile the newest code

Git clone the repo and then type, (If you would like to change a version just change it in setup.py)

pip install setuptools wheel
python setup.py sdist bdist_wheel

It will give you a .whl and .tar.gz file.

To pip install it

pip install pdfquery --find-links ./

replace ./ to the directory you put your compiled .whl.

To dig a little bit deeper

Codes in v0.4.3,

# handle string prefix
if 'P' in label_format:
    page_label = label_format['P']+page_label

Codes in current github,

# handle string prefix
if 'P' in label_format:
    page_label = smart_unicode_decode(label_format['P']) + page_label

They added a smart_unicode_decode to fix the byte could not add with str value.