id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 27960 "ds = DataSource('/path/to/your/cities.shp') fails on first try (GDALException Unknown error code: ""198770787""), but works on second" Etiënne Thomassen nobody "I can not create a DataSource from a gpx file. It returns GDALException Unknown error code: ""198770787"" with the error code number seemingly random. However on the second try it works. And it does not even need to be the same file. {{{ Python 3.6.0 (default, Dec 24 2016, 08:01:42) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin Type ""help"", ""copyright"", ""credits"" or ""license"" for more information. >>> from django.contrib.gis.gdal import DataSource >>> ds = DataSource('gpxfile1.gpx') Traceback (most recent call last): File """", line 1, in File ""/Users/etienne/.virtualenvs/venv1/lib/python3.6/site-packages/django/contrib/gis/gdal/datasource.py"", line 64, in __init__ Driver.ensure_registered() File ""/Users/etienne/.virtualenvs/venv1/lib/python3.6/site-packages/django/contrib/gis/gdal/driver.py"", line 83, in ensure_registered rcapi.register_all() File ""/Users/etienne/.virtualenvs/venv1/lib/python3.6/site-packages/django/contrib/gis/gdal/prototypes/errcheck.py"", line 119, in check_errcode check_err(result, cpl=cpl) File ""/Users/etienne/.virtualenvs/venv1/lib/python3.6/site-packages/django/contrib/gis/gdal/error.py"", line 74, in check_err raise GDALException('Unknown error code: ""%s""' % code) django.contrib.gis.gdal.error.GDALException: Unknown error code: ""-1935278031"" >>> ds = DataSource('gpxfile2.gpx') >>> ds.layer_count 5 }}} This post on StackOverflow pointed me in this direction: http://stackoverflow.com/questions/41775536/datasource-gdalexception-unknown-error-code-474873798 Strangely, I can now get it to work doing this in my app: {{{ try: datasource = DataSource(target_path) except: datasource = DataSource(target_path) }}} Btw this part of my app stopped working migrating from Django 1.8 and Python 2.7 to Django 1.9 and Python 3.6. Now on Django 1.10 and Python 3.6" Bug closed GIS 1.10 Normal fixed DataSource, GIS Ready for checkin 1 0 0 0 0 0