[IMP] fix keys_to_validate, remove useless unlink, fix dialect

account_statement_base_import/parser/file_parser.py

@@ -54,7 +54,7 @@ class FileParser(BankStatementImportParser):
             self.ftype = ftype
         else:
             raise Exception(_('Invalide file type %s. please use csv or xls') % (ftype))
-        self.keys_to_validate = keys_to_validate
+        self.keys_to_validate = keys_to_validate or []
         self.convertion_dict = convertion_dict
         self.fieldnames = header
         self._datemode = 0 # used only for xls documents,
@@ -95,7 +95,7 @@ class FileParser(BankStatementImportParser):
         We skip the validation step if the file header is provided separately
         (in the field: fieldnames).
         """
-        if self.fieldnames is None and self.keys_to_validate:
+        if self.fieldnames is None:
             parsed_cols = self.result_row_list[0].keys()
             for col in self.keys_to_validate:
                 if col not in parsed_cols:

account_statement_base_import/parser/parser.py

@@ -28,7 +28,8 @@ def UnicodeDictReader(utf8_data, **kwargs):
     utf8_data.seek(pos)
     if not kwargs.get('dialect'):
         dialect = sniffer.sniff(sample_data, delimiters=',;\t')
-        del kwargs['dialect']
+        if 'dialect' in kwargs:
+            del kwargs['dialect']
     else:
         dialect = kwargs.pop('dialect')
     csv_reader = csv.DictReader(utf8_data, dialect=dialect, **kwargs)