Error: "not all arguments converted during string formatting" - python-3.x

Question

I have this following script that will compare xml file between two folders and convert some none type argument to "".
The problem is that at certain point of file checking, it will return an error of "not all arguments converted during string formatting"
Is there a way to resolved or bypass this part.
I have this following script:
import sys
from pandas.errors import ParserError
def compare_xml_files1(location1, location2):
skip_attributes = ['href', 'id', 'ImportGUID', 'ItemSignature']
try:
with zipfile.ZipFile(location1, 'r') as location1_zip:
with zipfile.ZipFile(location2, 'r') as location2_zip:
xml_files = [f for f in location1_zip.namelist() if
f.endswith((".dita", ".ditamap", ".customerproperties"))]
flag = 0
for xml_file in xml_files:
flag1 = 0
filename = os.path.basename(xml_file)
try:
location1_xml = location1_zip.read(xml_file).decode()
# location1_xml = location1_zip.open(xml_file)
location2_xml = location2_zip.read(xml_file).decode()
# location2_xml = location2_zip.open(xml_file)
except KeyError:
LOGGER.warning(f"{filename} not found in Golden Source")
flag += 1
continue
location1_root = ET.fromstring(location1_xml)
location2_root = ET.fromstring(location2_xml)
# location1_root = ET.ElementTree(file=location1_xml)
# location2_root = ET.ElementTree(file=location2_xml)
LOGGER.info(f"Validating dita file: {filename}")
for elem1, elem2 in zip(location1_root.iter(), location2_root.iter()):
if elem1.tag == elem2.tag:
if (all(n in elem2.attrib.keys() for n in elem1.attrib.keys()) and all(
n in elem1.attrib.keys() for n in elem2.attrib.keys())):
for key in elem1.attrib:
if key in skip_attributes:
pass # skipping check for attributes list
else:
if elem1.attrib[key] == elem2.attrib[key]:
pass
else:
flag += 1
flag1 += 1
LOGGER.warning('Dita file content mismatched at attribute level: ' + key)
LOGGER.warning('Dita file content mismatched for Tag value: ' + elem1.tag)
LOGGER.warning('Source Data mismatched attribute: ' + elem1.attrib[key])
LOGGER.warning(
'Golden Data mismatched attribute: ' + elem2.attrib[key] + "\n")
else:
flag += 1
flag1 += 1
LOGGER.error('Attributes are missing at tag: ' + elem1.tag)
LOGGER.error('Attributes in Source file:')
LOGGER.error(elem1.attrib.keys())
LOGGER.error('Attributes in Golden file:')
LOGGER.error(elem2.attrib.keys())
print("\n")
if type(elem1.text) == str and date_validate(elem1.text) is False:
if elem1.text == elem2.text:
pass
else:
flag += 1
flag1 += 1
if elem2.text is None: # to convert Nonetype to empty string
elem2.text = ""
LOGGER.warning('Dita file content mismatched for Tag value: ' + elem1.tag)
# LOGGER.warning('Source Data mismatched text: ' + elem1.text)
LOGGER.warning(f'Source Data mismatched text: {elem1.text}')
# LOGGER.warning('Golden Data mismatched text: ' + elem2.text + "\n")
LOGGER.warning(f'Golden Data mismatched text: {elem2.text}\n')
else: # to convert Nonetype to empty string
flag += 1
flag1 += 1
if elem2.text is None:
elem2.text = ""
LOGGER.warning('Dita file content mismatched at Tag value')
# LOGGER.warning('Source Data mismatched text: ' + elem1.text)
LOGGER.warning(f'Source Data mismatched text: {elem1.text}')
# LOGGER.warning('Golden Data mismatched text: ' + elem2.text + "\n")
LOGGER.warning(f'Golden Data mismatched text: {elem2.text}\n')
if flag1 == 0:
LOGGER.info('%s Dita file content matched\n', filename)
print('*' * 100)
else:
LOGGER.error('%s Dita file content does not matched\n', filename)
LOGGER.info('File Location :', location1, '\n')
print('*' * 100)
if flag == 0:
return True
else:
LOGGER.error('Job has an error')
return False
except Exception as e:
LOGGER.error(str(e))
sys.exit(1)
except ParserError as e:
filename, line_no, function_name = e.__traceback__.tb_frame.f_code.co_filename, e.__traceback__.tb_lineno, \
e.__traceback__.tb_frame.f_code.co_name
error_message = e.args[0]
LOGGER.error(f'ParseError: {error_message}')
LOGGER.debug({'filename': filename, 'lineno': line_no, 'name': function_name, 'type': 'ParserError',
'message': error_message})
return False
except KeyError as e:
filename, line_no, function_name = e.__traceback__.tb_frame.f_code.co_filename, e.__traceback__.tb_lineno, \
e.__traceback__.tb_frame.f_code.co_name
error_message = e.args[0]
LOGGER.error('KeyError' + str(e))
LOGGER.debug({'filename': filename, 'lineno': line_no, 'name': function_name, 'type': 'KeyError',
'message': error_message})
return False