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datetime().astimezone() is broken #4982

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xiaxinmeng opened this issue May 20, 2023 · 1 comment
Open

datetime().astimezone() is broken #4982

xiaxinmeng opened this issue May 20, 2023 · 1 comment
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A-stdlib C-bug Something isn't working

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@xiaxinmeng
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It seems that RustPython supports datetime().astimezone() while the implementation of this function is broken and attribute 'tm_gmtoff' is missing. See the following example.

Example.py

from datetime import datetime
datetime(3001, 1, 19, 7, 59, 59, 999999).astimezone()

Output on RustPython:

Traceback (most recent call last):
  File "/home/xxm/Desktop/RustPython/example.py", line 199, in <module>
    datetime(3001, 1, 19, 7, 59, 59, 999999).astimezone() 
  File "/home/xxm/.cargo/git/checkouts/rustpython-f8ef4d934ac33cd8/59df92d/pylib/Lib/datetime.py", line 1862, in astimezone
    tz = self._local_timezone()
  File "/home/xxm/.cargo/git/checkouts/rustpython-f8ef4d934ac33cd8/59df92d/pylib/Lib/datetime.py", line 1856, in _local_timezone
    gmtoff = localtm.tm_gmtoff
AttributeError: 'struct_time' object has no attribute 'tm_gmtoff'

Behavior on CPython: works normally

Environment:
RustPython: v0.2.0 (https://github.com/RustPython/RustPython#59df92d7)
CPython: 3.9.0
Ubuntu 18.04
@DimitrisJim DimitrisJim added C-bug Something isn't working A-stdlib labels May 20, 2023
@DimitrisJim
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both tm_gmtoff and tm_zone are missing from the struct_time struct:

RustPython/vm/src/stdlib/time.rs

Lines 318 to 328 in 59df92d

struct PyStructTime {
tm_year: PyObjectRef,
tm_mon: PyObjectRef,
tm_mday: PyObjectRef,
tm_hour: PyObjectRef,
tm_min: PyObjectRef,
tm_sec: PyObjectRef,
tm_wday: PyObjectRef,
tm_yday: PyObjectRef,
tm_isdst: PyObjectRef,
}

reference, Python docs on these: https://docs.python.org/3/library/time.html#time.struct_time

Might be easy to add them.

@bobby-palmer bobby-palmer mentioned this issue Jun 19, 2023
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@DimitrisJim @xiaxinmeng