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[utils] Add ability to control skipping false values in dict_get

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This commit is contained in:
Sergey M․ 2016-02-07 08:13:04 +06:00
parent 52f5889f77
commit 86296ad2cd
2 changed files with 15 additions and 5 deletions
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13
test/test_utils.py
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@ -452,9 +452,15 @@ def test_urlencode_postdata(self):
self.assertTrue(isinstance(data, bytes))
def test_dict_get(self):
d = {
'a': 42,
FALSE_VALUES = {
'none': None,
'false': False,
'zero': 0,
'empty_string': '',
'empty_list': [],
}
d = FALSE_VALUES.copy()
d['a'] = 42
self.assertEqual(dict_get(d, 'a'), 42)
self.assertEqual(dict_get(d, 'b'), None)
self.assertEqual(dict_get(d, 'b', 42), 42)
@ -463,6 +469,9 @@ def test_dict_get(self):
self.assertEqual(dict_get(d, ('b', 'c', 'a', 'd', )), 42)
self.assertEqual(dict_get(d, ('b', 'c', )), None)
self.assertEqual(dict_get(d, ('b', 'c', ), 42), 42)
for key, false_value in FALSE_VALUES.items():
self.assertEqual(dict_get(d, ('b', 'c', key, )), None)
self.assertEqual(dict_get(d, ('b', 'c', key, ), skip_false_values=False), false_value)
def test_encode_compat_str(self):
self.assertEqual(encode_compat_str(b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82', 'utf-8'), 'тест')

5
youtube_dl/utils.py
View file

@ -1717,10 +1717,11 @@ def encode(v):
return dict((encode(k), encode(v)) for k, v in d.items())
def dict_get(d, key_or_keys, default=None):
def dict_get(d, key_or_keys, default=None, skip_false_values=True):
if isinstance(key_or_keys, (list, tuple)):
for key in key_or_keys:
if d.get(key):
if key not in d or d[key] is None or skip_false_values and not d[key]:
continue
return d[key]
return default
return d.get(key_or_keys, default)