def detect_format(stream):
"""Return format name of given stream."""
for fmt in registry.formats():
try:
if fmt.detect(stream):
return fmt.title
except AttributeError:
pass
def detect_format(stream):
"""Return format name of given stream (file-like object, string, or bytestring)."""
stream = normalize_input(stream)
fmt_title = None
for fmt in registry.formats():
try:
if fmt.detect(stream):
fmt_title = fmt.title
break
except AttributeError:
pass
finally:
if hasattr(stream, 'seek'):
stream.seek(0)
return fmt_title