astitcher commented on a change in pull request #192: Changed Python API to
better handle strings where symbo…
URL: https://github.com/apache/qpid-proton/pull/192#discussion_r334040232
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File path: python/proton/_message.py
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@@ -430,6 +430,31 @@ def _set_reply_to_group_id(self, value):
:raise: :exc:`MessageException` if there is any Proton error when
using the setter.
""")
+ def _get_instructions(self):
+ return self.instruction_dict
+ def _set_instructions(self, instructions):
+ if isinstance(instructions, dict):
+ self.instruction_dict = AnnotationDict(instructions, throw=False)
+ else:
+ self.instruction_dict = instructions
+ instructions = property(_get_instructions, _set_instructions, doc="""
+ Delivery annotations as a dictionary of key/values. The AMQP 1.0
+ specification restricts this dictionary to have keys that are either
+ :class:`symbol` or :class:`ulong` types. It is possible to use
+ the special ``dict`` subclass :class:`AnnotationDict` as it
+ will by default enforce these restrictions on construction. In addition,
+ if a string type is used, it will be silently converted into the
+ required symbol.
+
+ >>> from proton import symbol, ulong, Message, AnnotationDict
+ >>> msg = Message()
+ >>> msg.instructions = AnnotationDict({'one':1, symbol('two'):2,
ulong(3):'three'})
+ >>> msg.instructions
+ AnnotationDict({symbol('one'): 1, symbol('two'): 2, ulong(3): 'three'})
+
+ :type: :class:`AnnotationDict`. Any ``dict`` with :class:`ulong` or
:class:`symbol` keys.
+ """)
+
Review comment:
FWIW it's also contrary to the usual PYthon formatting standard PEP8 - I
recommend you use an editor that has an automatic check or run the code through
pylint or similar (flake8 pep8 ...).
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