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metadata string reduction #4040

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Merged
bjlittle merged 2 commits into from
Mar 1, 2021
Merged

metadata string reduction #4040

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b78641c
implement metadata string
rcomer Feb 26, 2021
ca341d6
review actions
rcomer Mar 1, 2021
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4 changes: 4 additions & 0 deletions docs/src/whatsnew/latest.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,10 @@ This document explains the changes made to Iris for this release
representation of the 64-bit non-cryptographic hash of the object using the
extremely fast `xxhash`_ hashing algorithm. (:pull:`4020`)

#. `@rcomer`_ implemented a ``__str__`` method for metadata classes, so
printing these objects skips metadata elements that are set to None or an
empty string or dictionary. (:pull:`4040`)


🐛 Bugs Fixed
=============
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10 changes: 10 additions & 0 deletions lib/iris/common/metadata.py
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Expand Up @@ -227,6 +227,16 @@ def __ne__(self, other):

return result

def __str__(self):
field_strings = []
for field in self._fields:
value = getattr(self, field)
if value is None or isinstance(value, (str, dict)) and not value:
continue
field_strings.append(f"{field}={value}")

return f"{type(self).__name__}({', '.join(field_strings)})"

def _api_common(
self, other, func_service, func_operation, action, lenient=None
):
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