benedict.utils.dict_util.move() - Code Metrics - Inspection of "Code refactoring." - fabiocaccamo/python-benedict - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 28b03c...e6e2ec )

by Fabio

created 2020-01-20 13:12 UTC

benedict.utils.dict_util.move() A

↳ Parent: benedict.utils.dict_util

Complexity

Conditions

Size

Total Lines	6
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	6
dl	0
loc	6
rs	10
c	0
b	0
f	0
cc	4
nop	4

# -*- coding: utf-8 -*-

from six import string_types, text_type
from slugify import slugify

import copy
import json
import re


def clean(d, strings=True, dicts=True, lists=True):
    keys = list(d.keys())
    for key in keys:
        value = d.get(key, None)
        if not value:
            del_none = value is None
            del_string = strings and isinstance(value, string_types)
            del_dict = dicts and isinstance(value, dict)
            del_list = lists and isinstance(value, (list, set, tuple, ))
            if any([del_none, del_string, del_dict, del_list]):
                del d[key]


def clone(d):
    return copy.deepcopy(d)


def dump(data):
    def encoder(obj):
        json_types = (bool, dict, float, int, list, tuple, ) + string_types
        if not isinstance(obj, json_types):
            return str(obj)
    return json.dumps(data, indent=4, sort_keys=True, default=encoder)


def filter(d, predicate):
    if not callable(predicate):
        raise ValueError('predicate argument must be a callable.')
    new_dict = d.copy()
    new_dict.clear()
    keys = list(d.keys())
    for key in keys:
        value = d.get(key, None)
        if predicate(key, value):
            new_dict[key] = value
    return new_dict


def flatten(d, separator='_', **kwargs):
    new_dict = d.copy()
    new_dict.clear()
    keys = list(d.keys())
    base_key = kwargs.pop('base_key', '')
    for key in keys:
        new_key = '{}{}{}'.format(
            base_key, separator, key) if base_key and separator else key
        value = d.get(key, None)
        if isinstance(value, dict):
            new_value = flatten(value, separator=separator, base_key=new_key)
            new_value.update(new_dict)
            new_dict.update(new_value)
        else:
            new_dict[new_key] = value
    return new_dict


def invert(d, flat=False):
    new_dict = d.copy()
    new_dict.clear()
    if flat:
        for key, value in d.items():
            new_dict.setdefault(value, key)
    else:
        for key, value in d.items():
            new_dict.setdefault(value, []).append(key)
    return new_dict


def items_sorted_by_keys(d, reverse=False):
    return sorted(d.items(), key=lambda item: item[0], reverse=reverse)


def items_sorted_by_values(d, reverse=False):
    return sorted(d.items(), key=lambda item: item[1], reverse=reverse)


def keypaths(d, separator='.'):
    if not separator or not isinstance(separator, string_types):
        raise ValueError('separator argument must be a (non-empty) string.')

    def f(parent, parent_keys):
        kp = []
        for key, value in parent.items():
            keys = parent_keys + [key]
            kp += [separator.join(text_type(k) for k in keys)]
            if isinstance(value, dict):
                kp += f(value, keys)
        return kp
    kp = f(d, [])
    kp.sort()
    return kp


def merge(d, other, *args):
    others = [other] + list(args)
    for other in others:
        for key, value in other.items():
            src = d.get(key, None)
            if isinstance(src, dict) and isinstance(value, dict):
                merge(src, value)
            else:
                d[key] = value
    return d


def move(d, key_src, key_dest, overwrite=True):
    if key_dest == key_src:
        return
    if key_dest in d and not overwrite:
        raise KeyError
    d[key_dest] = d.pop(key_src)


def remove(d, keys, *args):
    if isinstance(keys, string_types):
        keys = [keys]
    keys += args
    for key in keys:
        d.pop(key, None)


def rename(d, key, key_new):
    move(d, key, key_new, overwrite=False)


def resolve(d, keys, **kwargs):
    create_intermediates = kwargs.pop('create_intermediates', False)
    result = (None, None, None, )
    parent = d
    i = 0
    j = len(keys)
    while i < j:
        key = keys[i]
        try:
            value = parent[key]
            result = (parent, key, value, )
            parent = value
            i += 1
        except (KeyError, ):
            if create_intermediates:
                parent[key] = {}
                continue
            result = (None, None, None, )
            break
        except (TypeError, ValueError, ):
            result = (None, None, None, )
            break
    return result


def search(d, query,
           in_keys=True, in_values=True, exact=False, case_sensitive=True):
    items = []

    def get_term(value):
        v_is_str = isinstance(value, string_types)
        v = value.lower() if (v_is_str and not case_sensitive) else value
        return (v, v_is_str, )

    q, q_is_str = get_term(query)

    def get_match(cond, value):
        if not cond:
            return False
        v, v_is_str = get_term(value)
        # TODO: add regex support
        if exact:
            return q == v
        elif q_is_str and v_is_str:
            return q in v
        return False

    def f(item_dict, item_key, item_value):
        if get_match(in_keys, item_key) or get_match(in_values, item_value):
            items.append((item_dict, item_key, item_value, ))
    traverse(d, f)
    return items


def standardize(d):
    def f(item_dict, item_key, item_value):
        if isinstance(item_key, string_types):
            # https://stackoverflow.com/a/12867228/2096218
            norm_key = re.sub(
                r'((?<=[a-z0-9])[A-Z]|(?!^)[A-Z](?=[a-z]))', r'_\1', item_key)
            norm_key = slugify(norm_key, separator='_')
            move(item_dict, item_key, norm_key)
    traverse(d, f)


def subset(d, keys, *args):
    new_dict = d.copy()
    new_dict.clear()
    if isinstance(keys, string_types):
        keys = [keys]
    keys += args
    for key in keys:
        new_dict[key] = d.get(key, None)
    return new_dict


def swap(d, key1, key2):
    if key1 == key2:
        return
    d[key1], d[key2] = d[key2], d[key1]


def traverse(d, callback):
    if not callable(callback):
        raise ValueError('callback argument must be a callable.')
    keys = list(d.keys())
    for key in keys:
        value = d.get(key, None)
        callback(d, key, value)
        if isinstance(value, dict):
            traverse(value, callback)


def unflatten(d, separator='_'):
    new_dict = d.copy()
    new_dict.clear()
    new_dict_cursor = new_dict
    keys = list(d.keys())
    for key in keys:
        value = d.get(key, None)
        new_value = unflatten(value, separator=separator) if isinstance(
            value, dict) else value
        new_keys = key.split(separator) if separator in key else [key]
        new_parent, new_key, _ = resolve(
            new_dict, new_keys, create_intermediates=True)
        new_parent[new_key] = new_value
    return new_dict


def unique(d):
    values = []
    keys = list(d.keys())
    for key in keys:
        value = d.get(key, None)
        if value in values:
            d.pop(key, None)
            continue
        values.append(value)


1			# -- coding: utf-8 --
2
3			from six import string_types, text_type
4			from slugify import slugify
5
6			import copy
7			import json
8			import re
9
10
11			def clean(d, strings=True, dicts=True, lists=True):
12			keys = list(d.keys())
13			for key in keys:
14			value = d.get(key, None)
15			if not value:
16			del_none = value is None
17			del_string = strings and isinstance(value, string_types)
18			del_dict = dicts and isinstance(value, dict)
19			del_list = lists and isinstance(value, (list, set, tuple, ))
20			if any([del_none, del_string, del_dict, del_list]):
21			del d[key]
22
23
24			def clone(d):
25			return copy.deepcopy(d)
26
27
28			def dump(data):
29			def encoder(obj):
30			json_types = (bool, dict, float, int, list, tuple, ) + string_types
31			if not isinstance(obj, json_types):
32			return str(obj)
33			return json.dumps(data, indent=4, sort_keys=True, default=encoder)
34
35
36			def filter(d, predicate):
37			if not callable(predicate):
38			raise ValueError('predicate argument must be a callable.')
39			new_dict = d.copy()
40			new_dict.clear()
41			keys = list(d.keys())
42			for key in keys:
43			value = d.get(key, None)
44			if predicate(key, value):
45			new_dict[key] = value
46			return new_dict
47
48
49			def flatten(d, separator='_', **kwargs):
50			new_dict = d.copy()
51			new_dict.clear()
52			keys = list(d.keys())
53			base_key = kwargs.pop('base_key', '')
54			for key in keys:
55			new_key = '{}{}{}'.format(
56			base_key, separator, key) if base_key and separator else key
57			value = d.get(key, None)
58			if isinstance(value, dict):
59			new_value = flatten(value, separator=separator, base_key=new_key)
60			new_value.update(new_dict)
61			new_dict.update(new_value)
62			else:
63			new_dict[new_key] = value
64			return new_dict
65
66
67			def invert(d, flat=False):
68			new_dict = d.copy()
69			new_dict.clear()
70			if flat:
71			for key, value in d.items():
72			new_dict.setdefault(value, key)
73			else:
74			for key, value in d.items():
75			new_dict.setdefault(value, []).append(key)
76			return new_dict
77
78
79			def items_sorted_by_keys(d, reverse=False):
80			return sorted(d.items(), key=lambda item: item[0], reverse=reverse)
81
82
83			def items_sorted_by_values(d, reverse=False):
84			return sorted(d.items(), key=lambda item: item[1], reverse=reverse)
85
86
87			def keypaths(d, separator='.'):
88			if not separator or not isinstance(separator, string_types):
89			raise ValueError('separator argument must be a (non-empty) string.')
90
91			def f(parent, parent_keys):
92			kp = []
93			for key, value in parent.items():
94			keys = parent_keys + [key]
95			kp += [separator.join(text_type(k) for k in keys)]
96			if isinstance(value, dict):
97			kp += f(value, keys)
98			return kp
99			kp = f(d, [])
100			kp.sort()
101			return kp
102
103
104			def merge(d, other, *args):
105			others = [other] + list(args)
106			for other in others:
107			for key, value in other.items():
108			src = d.get(key, None)
109			if isinstance(src, dict) and isinstance(value, dict):
110			merge(src, value)
111			else:
112			d[key] = value
113			return d
114
115
116			def move(d, key_src, key_dest, overwrite=True):
117			if key_dest == key_src:
118			return
119			if key_dest in d and not overwrite:
120			raise KeyError
121			d[key_dest] = d.pop(key_src)
122
123
124			def remove(d, keys, *args):
125			if isinstance(keys, string_types):
126			keys = [keys]
127			keys += args
128			for key in keys:
129			d.pop(key, None)
130
131
132			def rename(d, key, key_new):
133			move(d, key, key_new, overwrite=False)
134
135
136			def resolve(d, keys, **kwargs):
137			create_intermediates = kwargs.pop('create_intermediates', False)
138			result = (None, None, None, )
139			parent = d
140			i = 0
141			j = len(keys)
142			while i < j:
143			key = keys[i]
144			try:
145			value = parent[key]
146			result = (parent, key, value, )
147			parent = value
148			i += 1
149			except (KeyError, ):
150			if create_intermediates:
151			parent[key] = {}
152			continue
153			result = (None, None, None, )
154			break
155			except (TypeError, ValueError, ):
156			result = (None, None, None, )
157			break
158			return result
159
160
161			def search(d, query,
162			in_keys=True, in_values=True, exact=False, case_sensitive=True):
163			items = []
164
165			def get_term(value):
166			v_is_str = isinstance(value, string_types)
167			v = value.lower() if (v_is_str and not case_sensitive) else value
168			return (v, v_is_str, )
169
170			q, q_is_str = get_term(query)
171
172			def get_match(cond, value):
173			if not cond:
174			return False
175			v, v_is_str = get_term(value)
176			# TODO: add regex support
177			if exact:
178			return q == v
179			elif q_is_str and v_is_str:
180			return q in v
181			return False
182
183			def f(item_dict, item_key, item_value):
184			if get_match(in_keys, item_key) or get_match(in_values, item_value):
185			items.append((item_dict, item_key, item_value, ))
186			traverse(d, f)
187			return items
188
189
190			def standardize(d):
191			def f(item_dict, item_key, item_value):
192			if isinstance(item_key, string_types):
193			# https://stackoverflow.com/a/12867228/2096218
194			norm_key = re.sub(
195			r'((?<=[a-z0-9])[A-Z]\|(?!^)[A-Z](?=[a-z]))', r'_\1', item_key)
196			norm_key = slugify(norm_key, separator='_')
197			move(item_dict, item_key, norm_key)
198			traverse(d, f)
199
200
201			def subset(d, keys, *args):
202			new_dict = d.copy()
203			new_dict.clear()
204			if isinstance(keys, string_types):
205			keys = [keys]
206			keys += args
207			for key in keys:
208			new_dict[key] = d.get(key, None)
209			return new_dict
210
211
212			def swap(d, key1, key2):
213			if key1 == key2:
214			return
215			d[key1], d[key2] = d[key2], d[key1]
216
217
218			def traverse(d, callback):
219			if not callable(callback):
220			raise ValueError('callback argument must be a callable.')
221			keys = list(d.keys())
222			for key in keys:
223			value = d.get(key, None)
224			callback(d, key, value)
225			if isinstance(value, dict):
226			traverse(value, callback)
227
228
229			def unflatten(d, separator='_'):
230			new_dict = d.copy()
231			new_dict.clear()
232			new_dict_cursor = new_dict
233			keys = list(d.keys())
234			for key in keys:
235			value = d.get(key, None)
236			new_value = unflatten(value, separator=separator) if isinstance(
237			value, dict) else value
238			new_keys = key.split(separator) if separator in key else [key]
239			new_parent, new_key, _ = resolve(
240			new_dict, new_keys, create_intermediates=True)
241			new_parent[new_key] = new_value
242			return new_dict
243
244
245			def unique(d):
246			values = []
247			keys = list(d.keys())
248			for key in keys:
249			value = d.get(key, None)
250			if value in values:
251			d.pop(key, None)
252			continue
253			values.append(value)
254

fabiocaccamo / python-benedict

Push — master ( 28b03c...e6e2ec )

benedict.utils.dict_util.move() A

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