[extractor/common] Add support multiple getters in try_get

This commit is contained in:
Sergey M․ 2017-04-18 22:39:58 +07:00
parent bae1404893
commit a32a9a7ef5
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1 changed files with 10 additions and 7 deletions

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@ -2103,13 +2103,16 @@ def dict_get(d, key_or_keys, default=None, skip_false_values=True):
def try_get(src, getter, expected_type=None):
try:
v = getter(src)
except (AttributeError, KeyError, TypeError, IndexError):
pass
else:
if expected_type is None or isinstance(v, expected_type):
return v
if not isinstance(getter, (list, tuple)):
getter = [getter]
for get in getter:
try:
v = get(src)
except (AttributeError, KeyError, TypeError, IndexError):
pass
else:
if expected_type is None or isinstance(v, expected_type):
return v
def encode_compat_str(string, encoding=preferredencoding(), errors='strict'):