8000 ENH: add origin to to_datetime by jreback · Pull Request #15828 · pandas-dev/pandas · GitHub
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ENH: add origin to to_datetime #15828

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ENH: add origin to to_datetime #15828

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ad7356e
BUG: Series creation with datetime64 with non-ns unit as object dtype
sumitbinnani Mar 28, 2017
6a8a779
update docs / tests
jreback Mar 28, 2017
a24e88c
rename epoch -> unix
jreback Mar 28, 2017
56663a5
add Timedelta floordiv ops
jreback Mar 29, 2017
209591a
bug fix
jreback Mar 29, 2017
ebb4acd
doc fixes & cleanup
jreback Apr 2, 2017
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doc fixes & cleanup
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@jreback
jreback committed Apr 2, 2017
commit ebb4acdc6d2d9c4cb52c61cbc69f0a64db3a3d0d
16 changes: 6 additions & 10 deletions pandas/tseries/tools.py
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Expand Up @@ -243,7 +243,8 @@ def to_datetime(arg, errors='raise', dayfirst=False, yearfirst=False,
method of parsing them. In some cases this can increase the parsing
speed by ~5-10x.
origin : scalar, default is 'unix'
convertible to Timestamp / string ('julian', 'unix')
Define the reference date. The numeric values would be parsed as number
of units (defined by `unit`) since this reference date.

- If 'unix' (or POSIX) time; origin is set to 1970-01-01.
- If 'julian', unit must be 'D', and origin is set to beginning of
Expand Down Expand Up @@ -483,17 +484,12 @@ def _convert_listlike(arg, box, format, name=None, tz=tz):
# this should be lossless in terms of precision
offset = offset // tslib.Timedelta(1, unit=unit)

arg = np.asarray(arg)
# scalars & ndarray-like can handle the addition
if is_list_like(arg) and not isinstance(
arg, (ABCSeries, ABCIndexClass, np.ndarray)):
arg = np.asarray(arg)
arg = arg + offset

# convert to the tenor of the original arg
if is_scalar(original):
arg = arg.item()
elif isinstance(original, ABCSeries):
arg = type(original)(arg, index=original.index, name=original.name)
elif isinstance(original, ABCIndexClass):
arg = type(original)(arg)

if isinstance(arg, tslib.Timestamp):
result = arg
elif isinstance(arg, ABCSeries):
Expand Down
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