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Python > dir({}) > dictオブジェクトの属性を返す

Last updated at Posted at 2017-03-16
動作環境
Xeon E5-2620 v4 (8コア) x 2
32GB RAM
CentOS 6.8 (64bit)
openmpi-1.8.x86_64 とその-devel
mpich.x86_64 3.1-5.el6とその-devel
gcc version 4.4.7 (とgfortran)
NCAR Command Language Version 6.3.0
WRF v3.7.1を使用。

@shiracamus さんのコメントにて教えていただいた以下についての整理。

>>> dir({}) ['__class__', '__cmp__', '__contains__', '__delattr__', '__delitem__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__init__', '__iter__', '__le__', '__len__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'clear', 'copy', 'fromkeys', 'get', 'has_key', 'items', 'iteritems', 'iterkeys', 'itervalues', 'keys', 'pop', 'popitem', 'setdefault', 'update', 'values', 'viewitems', 'viewkeys', 'viewvalues']

{}は何型か。

>>> type({})
<type 'dict'>

dirの用法。
https://docs.python.jp/3/library/functions.html#dir

引数がある場合、そのオブジェクトの有効な属性のリストを返そうと試みます。

上記で見られる個々のものは「属性」ということらしい。

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