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Importing several modules #991

alassauzet opened this Issue Nov 14, 2018 · 2 comments


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alassauzet commented Nov 14, 2018

OS (e.g. Windows 10 or macOS Sierra)

Windows 10

Versions of xlwings, Excel and Python (e.g. 0.11.8, Office 365, Python 3.7)

The last one (0.14.1) - Excel 16.0

Describe your issue (incl. Traceback!)

Hi guys,

When importing two modules, I have an « Excel automation error 440 », while it perfectly works when I import each one separately. And I use « ; » as explained in the doc to import them simultaneously in the field « UDF_MODULES » (confirmed in the conf file). Any idea ?

Thanks for your help,

@fzumstein fzumstein added the bug label Nov 16, 2018


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fzumstein commented Nov 16, 2018

this error was introduced in v0.12. For now you can work around it by hacking the xlwings_udfs VBA module and remove the duplicate line

#Const App = "Microsoft Excel" 'Adjust when using outside of Excel

@fzumstein fzumstein added this to the 0.14.2 milestone Nov 16, 2018


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alassauzet commented Nov 16, 2018

Indeed, this makes it working. If I'm right, this should be fixed inside the function generate_vba_wrapper


Lines 299 to 307 in 98a0a6b

def generate_vba_wrapper(module_name, module, f):
vba = VBAWriter(f)
vba.writeln('Attribute VB_Name = "xlwings_udfs"')
vba.writeln("'Autogenerated code by xlwings - changes will be lost with next import!")
vba.writeln("""#Const App = "Microsoft Excel" 'Adjust when using outside of Excel""")

which is called for each imported module


Lines 414 to 416 in 98a0a6b

for module_name in module_names:
module = get_udf_module(module_name)
generate_vba_wrapper(module_name, module, tf.file)

Thanks again

@fzumstein fzumstein closed this in f6b9812 Nov 17, 2018

fzumstein added a commit that referenced this issue Nov 17, 2018

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