ENG-8475 | fix flake8 errors

Author: sh-andriy

mfr/extensions/tabular/libs/xlrd_tools.py

@@ -1,15 +1,14 @@
+import xlrd
+import zipfile
+
 from io import BytesIO
 from openpyxl import load_workbook
-import xlrd, zipfile
 from collections import OrderedDict
-from ..exceptions import TableTooBigError, MissingRequirementsError
 from ..utilities import (
-    header_population,
     to_bytes,
     parse_xls,
     parse_xlsx
 )
-from mfr.extensions.tabular.compat import range, basestring
 
 
 def xlsx_xlrd(fp):

mfr/extensions/tabular/utilities.py

@@ -8,7 +8,7 @@
 from tempfile import NamedTemporaryFile
 
 from mfr.extensions.tabular import compat
-from mfr.core.exceptions import SubprocessError
+from mfr.core.exceptions import SubprocessError, TooBigToRenderError
 from mfr.extensions.tabular.settings import (PSPP_CONVERT_BIN,
                                              PSPP_CONVERT_TIMEOUT)
 
@@ -159,13 +159,12 @@ def parse_xlsx(wb, sheets):
 
 def verify_size(rows, cols, ext):
     if rows > MAX_SIZE or cols > MAX_SIZE:
-        raise TableTooBigError('Table is too large to render.', ext,
+        raise TooBigToRenderError('Table is too large to render.', ext,
                                nbr_cols=cols, nbr_rows=rows)
 
 
 def fix_headers(raw):
-    return [str(v) if v not in (None, '') else f'Unnamed: {i+1}'
-            for i, v in enumerate(raw)]
+    return [str(v) if v not in (None, '') else f'Unnamed: {i + 1}' for i, v in enumerate(raw)]
 
 
 def row_vals(row, datemode):