pyexiv2-developers team mailing list archive

[Vincent Vande Vyvre <vincent.vandevyvre@xxxxxxxx>]

Hi Olivier,
Hi all,

Ubuntu 12.04 provide all necessary for the compilation of boost with Python3
(maybe Oneiric too, I've skipped this version)

Following the same procedure as describe into the bug
https://bugs.launchpad.net/pyexiv2/+bug/824440,
pyexiv2 works fine with Python3 but read only. Same as with Archlinux.

It seems the problem is in the data format. Unicode, ASCII, bytes ...

Some examples:

tag = "Exif.Photo.UserComment"
val = "Soirée d'été"  # <class str>

----------------------------------------------
data[tag].value = val
Error: Python argument types in
    _ExifTag._setRawValue(_ExifTag, bytes)
did not match C++ signature:
    _setRawValue(exiv2wrapper::ExifTag {lvalue}, std::string)
----------------------------------------------

val = unicodedata.normalize('NFKD', val).encode('ascii', 'ignore')  #
<class 'bytes'>
data[tag].value = val
Error: Python argument types in
    _ExifTag._setRawValue(_ExifTag, bytes)
did not match C++ signature:
    _setRawValue(exiv2wrapper::ExifTag {lvalue}, std::string)
-----------------------------------------------

data[tag].value = '{0}'.format(val)
Error: Python argument types in
    _ExifTag._setRawValue(_ExifTag, bytes)
did not match C++ signature:
    _setRawValue(exiv2wrapper::ExifTag {lvalue}, std::string)
-----------------------------------------------

tag = 'Exif.GPSInfo.GPSLatitudeRef'
latref = 'N' # <class str>

Traceback (most recent call last):
    ...
  File "/home/vincent/oqapy3/metadatas.py", line 406, in modify_geotags
    self.datas[tag].value = latref
  File "/usr/lib/python3.2/dist-packages/pyexiv2/exif.py", line 198, in
_set_value
    self.raw_value = self._convert_to_string(value)
  File "/usr/lib/python3.2/dist-packages/pyexiv2/exif.py", line 164, in
_set_raw_value
    self._tag._setRawValue(value)
Boost.Python.ArgumentError: Python argument types in
    _ExifTag._setRawValue(_ExifTag, bytes)
did not match C++ signature:
    _setRawValue(exiv2wrapper::ExifTag {lvalue}, std::string)
---------------------------------------------

tag = 'Exif.GPSInfo.GPSLatitude'
val = [Rational(50, 1), Rational(49, 1), Rational(54, 1)] # <class 'list'>
data[tag].value = val

... No error, great!

So, may I perform other tests? feel free to ask me, I've a machine only
for testing.

Best regards.
Vincent



-- 
Vincent V.V.
Oqapy <https://launchpad.net/oqapy> . Qarte+7
<https://launchpad.net/qarte+7> . PaQager <https://launchpad.net/paqager>