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[utils] Relax attribute key assert
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@ -141,7 +141,7 @@ def write_json_file(obj, fn):
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if sys.version_info >= (2, 7):
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def find_xpath_attr(node, xpath, key, val=None):
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""" Find the xpath xpath[@key=val] """
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assert re.match(r'^[a-zA-Z-]+$', key)
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assert re.match(r'^[a-zA-Z_-]+$', key)
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if val:
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assert re.match(r'^[a-zA-Z0-9@\s:._-]*$', val)
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expr = xpath + ('[@%s]' % key if val is None else "[@%s='%s']" % (key, val))
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