Brightway2: SyntaxError: at expr='ecoinvent 3.7 cut-off' when bw.write_database() - brightway

Question

I'm using an LCI dataset from an Excel file.
I used it several times to conduct LCA with Brightway2.
I created a new product in that same Excle file and the first steps of importation went right, I mean these ones:
imp = bw.ExcelImporter(os.path.join(ROOT_DIR, "LCI_CW.xlsx"))
imp.apply_strategies()
imp.match_database(fields=('name', 'unit', 'location'))
imp.match_database("ecoinvent 3.7 cut-off",
fields=('name', 'unit', 'location'))
imp.statistics()
When checking with imp.write_excel() the activities match,etc.
BUT
When using imp.write_database()
I come with this error:
SyntaxError: at expr='ecoinvent 3.7 cut-off'
Any idea where this mistake could be hidden? I checked my use of expr='ecoinvent 3.7 cut-off', etc.
More details below:
Traceback (most recent call last):
File "C:\...\asteval\asteval.py", line 254, in parse
out = ast.parse(text)
File "C:\...\lib\ast.py", line 50, in parse
return compile(source, filename, mode, flags,
File "<unknown>", line 1
ecoinvent 3.7 cut-off
^
SyntaxError: invalid syntax
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\...\IPython\core\interactiveshell.py", line 3441, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "C:\...\Local\Temp/ipykernel_14440/3637353444.py", line 1, in <module>
imp.write_database()
File "C:\...\bw2io\importers\excel.py", line 277, in write_database
super(ExcelImporter, self).write_database(**kwargs)
File "C:\...\bw2io\importers\base_lci.py", line 266, in write_database
self.write_database_parameters(activate_parameters, delete_existing)
File "C:\...\bw2io\importers\excel.py", line 270, in write_database_parameters
super(ExcelImporter, self).write_database_parameters(
File "C:\...\bw2io\importers\base_lci.py", line 118, in write_database_parameters
parameters.new_database_parameters(
File "C:\...\bw2data\parameters.py", line 1319, in new_database_parameters
DatabaseParameter.recalculate(database)
File "C:\...\bw2data\parameters.py", line 348, in recalculate
new_symbols = get_new_symbols(data.values(), set(data))
File "C:\...\bw2data\parameters.py", line 1526, in get_new_symbols
nf.generic_visit(interpreter.parse(formula))
File "C:\...\asteval\asteval.py", line 256, in parse
self.raise_exception(None, msg='Syntax Error', expr=text)
File "C:\...\asteval\asteval.py", line 244, in raise_exception
raise exc(self.error_msg)
File "<string>", line unknown
SyntaxError: at expr='ecoinvent 3.7 cut-off'

Answer 1

The phrase 'ecoinvent 3.7 cut-off' is showing up in a definition of a database parameter, which isn't a valid Python expression, i.e. it is the same as typing in a Python prompt:
In [1]: ecoinvent 3.7 cut-off
File "<ipython-input-1-db6705818daf>", line 1
ecoinvent 3.7 cut-off
^
SyntaxError: invalid syntax
We could help debug the Excel file if you are comfortable sharing it. Otherwise I don't see a way to help understand the specific formatting error.