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-rw-r--r--wkhtmltopdf/utils.py13
1 files changed, 8 insertions, 5 deletions
diff --git a/wkhtmltopdf/utils.py b/wkhtmltopdf/utils.py
index e5bd102..be6bc6a 100644
--- a/wkhtmltopdf/utils.py
+++ b/wkhtmltopdf/utils.py
@@ -81,11 +81,14 @@ def wkhtmltopdf(pages, output=None, **kwargs):
env = dict(os.environ, **env)
cmd = getattr(settings, 'WKHTMLTOPDF_CMD', 'wkhtmltopdf')
- args = list(chain(cmd.split(),
- _options_to_args(**options),
- list(pages),
- [output]))
- return check_output(args, stderr=sys.stderr, env=env)
+ ck_args = list(chain(cmd.split(),
+ _options_to_args(**options),
+ list(pages),
+ [output]))
+ ck_kwargs = {'env': env}
+ if hasattr(sys.stderr, 'fileno'):
+ ck_kwargs['stderr'] = sys.stderr
+ return check_output(ck_args, **ck_kwargs)
def content_disposition_filename(filename):