Replace use of dict.has_key with `key in dict`
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@ -99,11 +99,11 @@ def visit_snippet(self, node):
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linenos = node.rawsource.count('\n') >= self.highlightlinenothreshold - 1
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fname = node['filename']
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highlight_args = node.get('highlight_args', {})
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if node.has_key('language'):
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if 'language' in node:
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# code-block directives
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lang = node['language']
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highlight_args['force'] = True
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if node.has_key('linenos'):
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if 'linenos' in node:
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linenos = node['linenos']
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def warner(msg):
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