diff options
| -rw-r--r-- | src/isodate/isoduration.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/isodate/isoduration.py b/src/isodate/isoduration.py index c3cfc65..ab13acb 100644 --- a/src/isodate/isoduration.py +++ b/src/isodate/isoduration.py @@ -33,6 +33,7 @@ format timedelta or Duration instances as ISO conforming strings. from datetime import timedelta from decimal import Decimal import re +import sys from isodate.duration import Duration from isodate.isoerror import ISO8601Error @@ -51,6 +52,8 @@ ISO8601_PERIOD_REGEX = re.compile( r"(?P<seconds>[0-9]+([,.][0-9]+)?S)?)?$") # regular expression to parse ISO duartion strings. +if sys.version_info[0] >= 3: + basestring = str def parse_duration(datestring): """ @@ -80,7 +83,7 @@ def parse_duration(datestring): The alternative format does not support durations with years, months or days set to 0. """ - if not isinstance(datestring, (str, unicode)): + if not isinstance(datestring, basestring): raise TypeError("Expecting a string %r" % datestring) match = ISO8601_PERIOD_REGEX.match(datestring) if not match: |