/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:358: SyntaxWarning: "is" with a literal. Did you mean "=="?
if token is '':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:2437: SyntaxWarning: "is" with a literal. Did you mean "=="?
if options['min_type'] is 'min' and options['min_value'] == 0:
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:2440: SyntaxWarning: "is" with a literal. Did you mean "=="?
if options['max_type'] is 'max' and options['max_value'] == 0:
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:4999: SyntaxWarning: "is" with a literal. Did you mean "=="?
if props[i]['type'] is 'number':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:6827: SyntaxWarning: "is not" with a literal. Did you mean "!="?
if data_bar['bar_axis_position'] is not 'none':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:6862: SyntaxWarning: "is" with a literal. Did you mean "=="?
if data_bar['bar_direction'] is 'left':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:6865: SyntaxWarning: "is" with a literal. Did you mean "=="?
if data_bar['bar_direction'] is 'right':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:6875: SyntaxWarning: "is" with a literal. Did you mean "=="?
if data_bar['bar_axis_position'] is 'middle':
/usr/lib/python3/dist-packages/xlsxwriter/worksheet.py:6878: SyntaxWarning: "is" with a literal. Did you mean "=="?
if data_bar['bar_axis_position'] is 'none':
/usr/lib/python3/dist-packages/xlsxwriter/chart.py:2497: SyntaxWarning: "is" with a literal. Did you mean "=="?
if val is 'right':
/usr/lib/python3/dist-packages/xlsxwriter/chart.py:2500: SyntaxWarning: "is" with a literal. Did you mean "=="?
if val is 'left':