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[utils] Add default value for xpath_text

This commit is contained in:
Sergey M․ 2015-06-28 22:56:07 +06:00
parent 9603e8a7d9
commit bf42a9906d
1 changed files with 6 additions and 2 deletions
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8
youtube_dl/utils.py
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@ -62,6 +62,8 @@ std_headers = {
} }
NO_DEFAULT = object()
ENGLISH_MONTH_NAMES = [ ENGLISH_MONTH_NAMES = [
'January', 'February', 'March', 'April', 'May', 'June', 'January', 'February', 'March', 'April', 'May', 'June',
'July', 'August', 'September', 'October', 'November', 'December'] 'July', 'August', 'September', 'October', 'November', 'December']
@ -171,13 +173,15 @@ def xpath_with_ns(path, ns_map):
return '/'.join(replaced) return '/'.join(replaced)
def xpath_text(node, xpath, name=None, fatal=False): def xpath_text(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
if sys.version_info < (2, 7): # Crazy 2.6 if sys.version_info < (2, 7): # Crazy 2.6
xpath = xpath.encode('ascii') xpath = xpath.encode('ascii')
n = node.find(xpath) n = node.find(xpath)
if n is None or n.text is None: if n is None or n.text is None:
if fatal: if default is not NO_DEFAULT:
return default
elif fatal:
name = xpath if name is None else name name = xpath if name is None else name
raise ExtractorError('Could not find XML element %s' % name) raise ExtractorError('Could not find XML element %s' % name)
else: else: