openpyxl+load_workbook+AttributeError: 'NoneType' object has no attribute 'date1904' - openpyxl

Question

When I use openpyxl to load the Excel file( .xlsx), this error displays (the last the link is the sample Excel file):
from openpyxl import *
wb = load_workbook("D:/develop/workspace/exman/test sample/510001653.xlsx")
Traceback (most recent call last):
File "", line 1, in
File "C:\Python34\lib\site-packages\openpyxl-2.5.0-py3.4.egg\openpyxl\reader\
xcel.py", line 161, in load_workbook
parser.parse()
File "C:\Python34\lib\site-packages\openpyxl-2.5.0-py3.4.egg\openpyxl\packagi
g\workbook.py", line 42, in parse
if package.properties.date1904:
AttributeError: 'NoneType' object has no attribute 'date1904'
sample excel file download

Answer 1

I debug the python file ,and find that the workbookPr = None , cause the package.properties to None( properties = Alias(workbookPr). So I change the code of workbookParser.parser() like follow, the error is solved.
class WorkbookParser:
def __init__(self, archive):
self.archive = archive
self.wb = Workbook()
self.sheets = []
self.rels = get_dependents(self.archive, ARC_WORKBOOK_RELS)
def parse(self):
src = self.archive.read(ARC_WORKBOOK)
node = fromstring(src)
package = WorkbookPackage.from_tree(node)
if package.properties is not None: #add this line
if package.properties.date1904:
wb.excel_base_date = CALENDAR_MAC_1904
self.wb.code_name = package.properties.codeName
self.wb.active = package.active
..........

Answer 2

This bug was fixed in newer versions (I checked 2.4.8 and its fixed. 2.4.0 still had it)
pip install --upgrade openpyxl