def is_superperiod(source, target) -> bool:
"""
Returns True if upsampling is possible between source and target
frequencies
Parameters
----------
source : str or DateOffset
Frequency converting from
target : str or DateOffset
Frequency converting to
Returns
-------
bool
"""
if target is None or source is None:
return False
source = _maybe_coerce_freq(source)
target = _maybe_coerce_freq(target)
if _is_annual(source):
if _is_annual(target):
return get_rule_month(source) == get_rule_month(target)
if _is_quarterly(target):
smonth = get_rule_month(source)
tmonth = get_rule_month(target)
return _quarter_months_conform(smonth, tmonth)
return target in {"D", "C", "B", "M", "H", "T", "S", "L", "U", "N"}
elif _is_quarterly(source):
return target in {"D", "C", "B", "M", "H", "T", "S", "L", "U", "N"}
elif _is_monthly(source):
return target in {"D", "C", "B", "H", "T", "S", "L", "U", "N"}
elif _is_weekly(source):
return target in {source, "D", "C", "B", "H", "T", "S", "L", "U", "N"}
elif source == "B":
return target in {"D", "C", "B", "H", "T", "S", "L", "U", "N"}
elif source == "C":
return target in {"D", "C", "B", "H", "T", "S", "L", "U", "N"}
elif source == "D":
return target in {"D", "C", "B", "H", "T", "S", "L", "U", "N"}
elif source == "H":
return target in {"H", "T", "S", "L", "U", "N"}
elif source == "T":
return target in {"T", "S", "L", "U", "N"}
elif source == "S":
return target in {"S", "L", "U", "N"}
elif source == "L":
return target in {"L", "U", "N"}
elif source == "U":
return target in {"U", "N"}
elif source == "N":
return target in {"N"}
else:
return False
def test_get_rule_month(obj, expected):
result = get_rule_month(obj)
assert result == expected
