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[utils] Support attributes with no values in get_elements_by_attribute()
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@ -1228,6 +1228,12 @@ part 3</font></u>
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self.assertEqual(get_element_by_attribute('class', 'foo', html), None)
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self.assertEqual(get_element_by_attribute('class', 'no-such-foo', html), None)
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html = '''
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<div itemprop="author" itemscope>foo</div>
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'''
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self.assertEqual(get_element_by_attribute('itemprop', 'author', html), 'foo')
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def test_get_elements_by_class(self):
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html = '''
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<span class="foo bar">nice</span><span class="foo bar">also nice</span>
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@ -365,9 +365,9 @@ def get_elements_by_attribute(attribute, value, html, escape_value=True):
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retlist = []
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for m in re.finditer(r'''(?xs)
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<([a-zA-Z0-9:._-]+)
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(?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'))*?
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(?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'|))*?
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\s+%s=['"]?%s['"]?
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(?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'))*?
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(?:\s+[a-zA-Z0-9:._-]+(?:=[a-zA-Z0-9:._-]*|="[^"]*"|='[^']*'|))*?
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\s*>
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(?P<content>.*?)
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</\1>
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