Python openpyxl load_workbook Errors: TypeError (NoneType not Iterable) and ValueError (Max. Value is 180)

Question

So I had Python 3.4.1 installed on a Windows XP laptop. I got the openpyxl package (don't remember now which version, I think 2.1) and I was chugging along fine, writing custom code to modify Excel documents as needed at my workplace.

Then I formatted my laptop (for work-related reasons) and installed Windows 7. I got hold of Python 3.4.1 again. I pip installed openpyxl ("pip install openpyxl" in my command prompt) - definitely version 2.1 this time. I then tried opening some of my earlier workbooks.

This was in the IDLE GUI interface - not in a script or anything. I just typed (after properly importing openpyxl->load_workbook):

wb=load_workbook('Filename.xlsx')

And now I get errors. This file was created by Excel 2007 (created in Windows XP, prior to my formatting my laptop and installing Windows 7), which I was previously able to open just fine with my openpyxl package on my earlier Windows XP configuration. I also tried reopening the Excel file(s) in MS Excel (Windows 7) and resaving, before trying to open with openpyxl. Both my previous Windows XP and my new Windows 7 are 32 bit (no 64 bit anywhere).

The errors I get (depends on which file I try to open) are:

ERROR FOR FILE No. 1:

Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
wb=load_workbook('Filename.xlsx')
File "C:\Python34\lib\site-packages\openpyxl\reader\excel.py", line 151, in load_workbook
_load_workbook(wb, archive, filename, read_only, keep_vba)
File "C:\Python34\lib\site-packages\openpyxl\reader\excel.py", line 244, in _load_workbook
wb._external_links = list(detect_external_links(rels, archive))
File "C:\Python34\lib\site-packages\openpyxl\workbook\names\external.py", line 100, in detect_external_links
Book.links = list(parse_ranges(range_xml))
File "C:\Python34\lib\site-packages\openpyxl\workbook\names\external.py", line 85, in parse_ranges
for n in safe_iterator(names, '{%s}definedName' % SHEET_MAIN_NS):
TypeError: 'NoneType' object is not iterable

ERROR FOR FILE No. 2:

Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
wb=load_workbook('Filename.xlsx')
File "C:\Python34\lib\site-packages\openpyxl\reader\excel.py", line 151, in load_workbook
_load_workbook(wb, archive, filename, read_only, keep_vba)
File "C:\Python34\lib\site-packages\openpyxl\reader\excel.py", line 205, in _load_workbook
style_table, color_index, cond_styles = read_style_table(archive.read(ARC_STYLE))
File "C:\Python34\lib\site-packages\openpyxl\reader\style.py", line 215, in read_style_table
p.parse()
File "C:\Python34\lib\site-packages\openpyxl\reader\style.py", line 44, in parse
self.parse_cell_xfs()
File "C:\Python34\lib\site-packages\openpyxl\reader\style.py", line 191, in parse_cell_xfs
_style['alignment'] = Alignment(**alignment)
File "C:\Python34\lib\site-packages\openpyxl\styles\alignment.py", line 54, in __init__
self.textRotation = textRotation
File "C:\Python34\lib\site-packages\openpyxl\styles\hashable.py", line 54, in __setattr__
return object.__setattr__(self, *args, **kwargs)
File "C:\Python34\lib\site-packages\openpyxl\descriptors\__init__.py", line 89, in __set__
super(Min, self).__set__(instance, value)
File "C:\Python34\lib\site-packages\openpyxl\descriptors\__init__.py", line 68, in __set__
raise ValueError('Max value is <0>'.format(self.max))
ValueError: Max value is 180

For the second case, I went to the __init__.py file and added a line to print the value generated. It turned out to be 255, which is > 180 (hence the error). I have no clue what this value represents - number of unique styles in the document or something?

Are there any dependencies for openpyxl? I have Excel properly installed (in Windows 7 now), with Service Pack 1. I have also tried uninstalling Python 3.4.1 and openpyxl and reinstalling, three or four times.

What could be the problem here?

Thanks in advance for any answers.

Answer 1

要修复NoneType错误，请清除excel中数据的格式，然后可以加载excel。

Answer 2

For the second, you have self.textRotation set to 255. That's where the max = 180 (degrees) comes from. In alignment.py, the min/max for textRoation is 0-180. This restriction was added in 2.1. (I find this restriction dubious, as there are 360 degrees.)

EDIT: In a more general sense, you're just trying to read an excel file. So, these are likely bugs.