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#!/usr/bin/env python
def main() -> None:
from xml.etree.ElementTree import XML
import elementpath
from elementpath import get_node_tree
from elementpath.xpath3 import XPath3Parser
root = XML('<a><b1/><b2><c1/><c2/></b2><b3/></a>')
result = elementpath.select(root, '*')
print(result)
result = list(elementpath.iter_select(root, '*'))
print(result)
selector = elementpath.Selector('*')
result = selector.select(root)
print(result)
result = list(selector.iter_select(root))
print(result)
result = elementpath.select(root, 'math:atan(1.0e0)', parser=XPath3Parser)
print(result)
root_node = get_node_tree(root)
result = elementpath.select(root_node, '*')
print(result)
assert result == elementpath.select(root, '*')
try:
elementpath.select(1, '*') # type: ignore[arg-type]
except TypeError:
pass
if __name__ == '__main__':
main()
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