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ASF GitHub Bot logged work on BEAM-7746:
----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Feb/20 09:22
Start Date: 29/Feb/20 09:22
Worklog Time Spent: 10m
Work Description: chadrik commented on pull request #11007: [BEAM-7746]
Runtime change to timestamp/duration equality
URL: https://github.com/apache/beam/pull/11007
mypy *strongly* recommends that "__eq__" work with arbitrary objects, by
returning `NotImplemented`
This PR prevents the following mypy errors:
```
apache_beam/utils/timestamp.py:193: error: Argument 1 of "__eq__" is
incompatible with supertype "object"; supertype defines the argument type as
"object" [override]
apache_beam/utils/timestamp.py:193: note: It is recommended for "__eq__" to
work with arbitrary objects, for example:
apache_beam/utils/timestamp.py:193: note: def __eq__(self, other:
object) -> bool:
apache_beam/utils/timestamp.py:193: note: if not isinstance(other,
Timestamp):
apache_beam/utils/timestamp.py:193: note: return NotImplemented
apache_beam/utils/timestamp.py:193: note: return <logic to compare
two Timestamp instances>
apache_beam/utils/timestamp.py:346: error: Argument 1 of "__eq__" is
incompatible with supertype "object"; supertype defines the argument type as
"object" [override]
apache_beam/utils/timestamp.py:346: note: It is recommended for "__eq__" to
work with arbitrary objects, for example:
apache_beam/utils/timestamp.py:346: note: def __eq__(self, other:
object) -> bool:
apache_beam/utils/timestamp.py:346: note: if not isinstance(other,
Duration):
apache_beam/utils/timestamp.py:346: note: return NotImplemented
apache_beam/utils/timestamp.py:346: note: return <logic to compare
two Duration instances>
```
I wrote an equality test in `timestamp_test.py` awhile back to cover this
case.
For reference, it looks like this:
```python
def test_equality(self):
for min_val in (Timestamp(1), Duration(1), 1, 1.1):
for max_val in (Timestamp(123), Duration(123), 123, 123.4):
self.assertTrue(min_val < max_val, "%s < %s" % (min_val, max_val))
self.assertTrue(min_val <= max_val, "%s <= %s" % (min_val, max_val))
self.assertTrue(max_val > min_val, "%s > %s" % (max_val, min_val))
self.assertTrue(max_val >= min_val, "%s >= %s" % (max_val, min_val))
```
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 395441)
Time Spent: 69h (was: 68h 50m)
> Add type hints to python code
> -----------------------------
>
> Key: BEAM-7746
> URL: https://issues.apache.org/jira/browse/BEAM-7746
> Project: Beam
> Issue Type: New Feature
> Components: sdk-py-core
> Reporter: Chad Dombrova
> Assignee: Chad Dombrova
> Priority: Major
> Time Spent: 69h
> Remaining Estimate: 0h
>
> As a developer of the beam source code, I would like the code to use pep484
> type hints so that I can clearly see what types are required, get completion
> in my IDE, and enforce code correctness via a static analyzer like mypy.
> This may be considered a precursor to BEAM-7060
> Work has been started here: [https://github.com/apache/beam/pull/9056]
>
>
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