human
What is a good Python code to get all predecessors of a node.
assistant
Here is a Python code to get all predecessors of a node

import xml.dom.minidom

def get_all_predecessors(node):
    """
    Return a list of all predecessors of a node.
    """
    return node.getElementsByTagName("predecessor")

# Enter the xml string
xml_string = """
<root>
    <child>
        <grandchild>
            <predecessor>
                <text>Hello</text>
            </predecessor>
        </grandchild>
    </child>
</root>
"""

# Calling the function
print((get_all_predecessors(xml.dom.minidom.parseString(xml_string))))

#Example Output

# [<DOM Element: predecessor at 0x7f887c970040>]

#Remember to inspect code for bugs.