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support reading Argparse instances inside classes #60

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support reading Argparse instances inside classes #60

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16 changes: 10 additions & 6 deletions sphinxarg/ext.py
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Original file line number Diff line number Diff line change
Expand Up @@ -471,14 +471,18 @@ def run(self):

# Skip this if we're dealing with a local file, since it obviously can't be imported
if 'filename' not in self.options:
_elements = attr_name.split('.')
try:
mod = __import__(module_name, globals(), locals(), [attr_name])
mod = __import__(module_name, globals(), locals(), [_elements[0]])
except ImportError:
raise self.error(f'Failed to import "{attr_name}" from "{module_name}".\n{sys.exc_info()[1]}')

if not hasattr(mod, attr_name):
raise self.error(('Module "%s" has no attribute "%s"\nIncorrect argparse :module: or :func: values?') % (module_name, attr_name))
func = getattr(mod, attr_name)
raise self.error(f'Failed to import "{_elements[0]}" from "{module_name}".\n{sys.exc_info()[1]}')
obj = mod
for i in _elements:
if not hasattr(obj, i):
raise self.error(f'"{obj}" has no attribute "{i}"\n'
'Incorrect argparse :module: or :func: values?')
obj = getattr(obj, i)
func = obj

if isinstance(func, ArgumentParser):
parser = func
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