Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Avoid using floating points during timestamp-datetime conversions #591

Merged
merged 4 commits into from
Apr 19, 2024
Merged

Avoid using floating points during timestamp-datetime conversions #591

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
e92f68e
avoid using float to convert timestamp from and to datetime
hakanakyurek Apr 18, 2024
12d9cc0
removed floor division in from_datetime
hakanakyurek Apr 19, 2024
64c0e67
removed rounding for sub-second precision in to_datetime
hakanakyurek Apr 19, 2024
34ab273
1e3/10**3 --> 1000
hakanakyurek Apr 19, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 4 additions & 2 deletions msgpack/ext.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -157,12 +157,14 @@ def to_datetime(self):
:rtype: `datetime.datetime`
"""
utc = datetime.timezone.utc
return datetime.datetime.fromtimestamp(0, utc) + datetime.timedelta(seconds=self.to_unix())
return datetime.datetime.fromtimestamp(0, utc) + datetime.timedelta(
seconds=self.seconds, microseconds=self.nanoseconds // 1000
)

@staticmethod
def from_datetime(dt):
"""Create a Timestamp from datetime with tzinfo.

:rtype: Timestamp
"""
return Timestamp.from_unix(dt.timestamp())
return Timestamp(seconds=int(dt.timestamp()), nanoseconds=dt.microsecond * 1000)
15 changes: 15 additions & 0 deletions test/test_timestamp.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,21 @@ def test_timestamp_datetime():
utc = datetime.timezone.utc
assert t.to_datetime() == datetime.datetime(1970, 1, 1, 0, 0, 42, 0, tzinfo=utc)

ts = datetime.datetime(2024, 4, 16, 8, 43, 9, 420317, tzinfo=utc)
ts2 = datetime.datetime(2024, 4, 16, 8, 43, 9, 420318, tzinfo=utc)

assert (
Timestamp.from_datetime(ts2).nanoseconds - Timestamp.from_datetime(ts).nanoseconds == 1000
)

ts3 = datetime.datetime(2024, 4, 16, 8, 43, 9, 4256)
ts4 = datetime.datetime(2024, 4, 16, 8, 43, 9, 4257)
assert (
Timestamp.from_datetime(ts4).nanoseconds - Timestamp.from_datetime(ts3).nanoseconds == 1000
)

assert Timestamp.from_datetime(ts).to_datetime() == ts


def test_unpack_datetime():
t = Timestamp(42, 14)
Expand Down
Loading