Source code for finam.tools.date_helper
"""Date and time helper functions"""
from datetime import timedelta
try:
from dateutil.relativedelta import relativedelta
_DATEUTIL_INSTALLED = True
except ImportError:
_DATEUTIL_INSTALLED = False
[docs]
def is_timedelta(value):
"""
Tests if a value is an instance of
:class:`timedelta <datetime.timedelta>` or
:class:`relativedelta <dateutil.relativedelta.relativedelta>`.
"""
if isinstance(value, timedelta):
return True
if _DATEUTIL_INSTALLED and isinstance(value, relativedelta):
return True
return False