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<p class="x_MsoNormal">I solved by running OpenSlide on Python 2.7 instead of 3.5. The same code now works and w and h are float. I don’t know if this can help you. I post you my configuration:<br>
- Anaconda Python 5.0.1 with 2.7 env (previously 3.5)<br>
- Windows 10 Edu (x64)<br>
- OpenSlide 1.1.1 installed from whl</p>
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<p class="x_MsoNormal">However, thanks for the answer.<br>
<br>
Kind regards,<br>
Francesco</p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>Da:</b> Benjamin Gilbert <bgilbert@cs.cmu.edu><br>
<b>Inviato:</b> Tuesday, November 7, 2017 9:14:03 PM<br>
<b>A:</b> openslide-users@lists.andrew.cmu.edu<br>
<b>Cc:</b> Francesco Daneluzzi<br>
<b>Oggetto:</b> Re: Problem with OpenSlide Python</font>
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<div class="PlainText">On Mon, Nov 06, 2017 at 12:08:04PM +0000, Francesco Daneluzzi wrote:<br>
> File "C:\Users\Francesco\Anaconda3\envs\py35\lib\site-packages\openslide\lowlevel.py", line 260, in read_region<br>
> buf = (w * h * float(c_uint32))()<br>
> TypeError: float() argument must be a string or a number, not '_ctypes.PyCSimpleType'<br>
> <br>
> The fact is that, in the last row, w and h are float (I printed them for<br>
> debugging), but c_uint32 is not and I am getting that error. What should<br>
> I do about it?<br>
<br>
Hi Francesco,<br>
<br>
Are you using a modified version of OpenSlide Python? Upstream OpenSlide<br>
Python 1.1.1 doesn't have that float conversion:<br>
<br>
<a href="https://github.com/openslide/openslide-python/blob/v1.1.1/openslide/lowlevel.py#L258">
https://github.com/openslide/openslide-python/blob/v1.1.1/openslide/lowlevel.py#L258</a><br>
<br>
Note that w and h must be int, not float.<br>
<br>
--Benjamin Gilbert<br>
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