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Akagi201Akagi201
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add json and collections
1 parent f277136 commit f255a9c

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‎collections/collections_ordereddict_equality.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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"""Iterating over an OrderedDict
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"""
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import collections
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print 'dict :',
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d1 = {}
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d1['a'] = 'A'
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d1['b'] = 'B'
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d1['c'] = 'C'
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d1['d'] = 'D'
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d1['e'] = 'E'
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d2 = {}
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d2['e'] = 'E'
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d2['d'] = 'D'
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d2['c'] = 'C'
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d2['b'] = 'B'
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d2['a'] = 'A'
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print d1 == d2
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print 'OrderedDict:',
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d1 = collections.OrderedDict()
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d1['a'] = 'A'
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d1['b'] = 'B'
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d1['c'] = 'C'
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d1['d'] = 'D'
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d1['e'] = 'E'
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d2 = collections.OrderedDict()
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d2['e'] = 'E'
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d2['d'] = 'D'
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d2['c'] = 'C'
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d2['b'] = 'B'
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d2['a'] = 'A'
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print d1 == d2

‎collections/collections_ordereddict_iter.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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"""Iterating over an OrderedDict
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"""
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import collections
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print 'Regular dictionary:'
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d = {}
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d['a'] = 'A'
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d['b'] = 'B'
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d['c'] = 'C'
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d['d'] = 'D'
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d['e'] = 'E'
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print type(d)
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for k, v in d.items():
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print k, v
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print '\nOrderedDict:'
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d = collections.OrderedDict()
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d['a'] = 'A'
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d['b'] = 'B'
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d['c'] = 'C'
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d['e'] = 'E'
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d['d'] = 'D'
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print type(d)
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for k, v in d.items():
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print k, v

‎json/json_compact_encoding.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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data = [{'a': 'A', 'b': (2, 4), 'c': 3.0}]
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print 'DATA:', repr(data)
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print 'repr(data) :', len(repr(data))
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print 'dumps(data) :', len(json.dumps(data))
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print 'dumps(data, indent=2) :', len(json.dumps(data, indent=2))
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print 'dumps(data, separators):', len(json.dumps(data, separators=(',', ':')))
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print 'dumps(data, separators):', json.dumps(data, separators=(',', ':'))

‎json/json_decoder_object_hook.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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class MyDecoder(json.JSONDecoder):
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def __init__(self):
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json.JSONDecoder.__init__(self, object_hook=self.dict_to_object)
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def dict_to_object(self, d):
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if '__class__' in d:
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class_name = d.pop('__class__')
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module_name = d.pop('__module__')
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module = __import__(module_name)
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print 'MODULE:', module
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class_ = getattr(module, class_name)
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print 'CLASS:', class_
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args = dict((key.encode('ascii'), value) for key, value in d.items())
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print 'INSTANCE ARGS:', args
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inst = class_(**args)
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else:
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inst = d
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return inst
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encoded_object = '[{"s": "instance value goes here", "__module__": "json_myobj", "__class__": "MyObj"}]'
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myobj_instance = MyDecoder().decode(encoded_object)
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print myobj_instance

‎json/json_dump_default.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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import json_myobj
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obj = json_myobj.MyObj('instance value goes here')
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print 'First attempt'
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try:
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print json.dumps(obj)
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except TypeError, err:
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print 'ERROR:', err
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def convert_to_builtin_type(obj):
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print 'default(', repr(obj), ')'
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# Convert objects to a dictionary of their representation
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d = {'__class__': obj.__class__.__name__,
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'__module__': obj.__module__,
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}
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d.update(obj.__dict__)
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return d
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print
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print 'With default'
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print json.dumps(obj, default=convert_to_builtin_type)

‎json/json_dump_file.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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import tempfile
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data = [{'a': 'A', 'b': (2, 4), 'c': 3.0}]
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f = tempfile.NamedTemporaryFile(mode='w+')
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json.dump(data, f)
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f.flush()
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print open(f.name, 'r').read()

‎json/json_encoder_default.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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import json_myobj
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class MyEncoder(json.JSONEncoder):
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def default(self, obj):
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print 'default(', repr(obj), ')'
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# Convert objects to a dictionary of their representation
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d = {'__class__': obj.__class__.__name__,
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'__module__': obj.__module__,
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}
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d.update(obj.__dict__)
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return d
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obj = json_myobj.MyObj('internal data')
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print obj
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print MyEncoder().encode(obj)

‎json/json_encoder_iterable.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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encoder = json.JSONEncoder()
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data = [{'a': 'A', 'b': (2, 4), 'c': 3.0}]
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for part in encoder.iterencode(data):
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print 'PART:', part

‎json/json_indent.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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data = [{'a': 'A', 'b': (2, 4), 'c': 3.0}]
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print 'DATA:', repr(data)
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print 'NORMAL:', json.dumps(data, sort_keys=True)
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print 'INDENT:', json.dumps(data, sort_keys=True, indent=2)

‎json/json_load_file.py‎

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#!/usr/bin/env python
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# encoding: utf-8
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import json
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import tempfile
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f = tempfile.NamedTemporaryFile(mode='w+')
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f.write('[{"a": "A", "c": 3.0, "b": [2, 4]}]')
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f.flush()
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f.seek(0)
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print json.load(f)

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