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kn_​example_​python_​excel_​format_​header

Excel file header format with KNIME and OpenPyxl

Excel file header format with KNIME and OpenPyxl
Freeze the top row, autosize the columns and set a style

Excel file header format with KNIME and OpenPyxlFreeze the top row, autosize the columns and set a style import knime_io as knio# https://openpyxl.readthedocs.io/en/stable/tutorial.html#loading-from-a-file# conda install -c anaconda openpyxlfrom openpyxl import load_workbookfrom openpyxl import Workbookfrom openpyxl.styles import NamedStyle, Border, Side, PatternFill, Font, GradientFill, Alignmentimport openpyxlimport osvar_data_path = knio.flow_variables['v_path_data_folder']# print("var_data_path: ", var_data_path )var_path_excel_file = var_data_path + os.path.sep + "my_data.xlsx"# print("var_path_excel_file: ", var_path_excel_file )var_sheet_name = knio.flow_variables['var_sheet_name']var_new_excel_file = knio.flow_variables['v_path_new_excel_file']var_no_rows = knio.flow_variables['v_max_rows']var_no_columns = knio.flow_variables['Number Columns']# https://stackoverflow.com/questions/51128029/copying-to-a-specific-sheet-openpyxl-destination-sheet-ignored-when-using-copwb = load_workbook(var_path_excel_file)# print list of current sheet namesv_list_sheetnames = wb.sheetnames# print("v_list_sheetnames: ", v_list_sheetnames)# activate the worksheetws = wb[var_sheet_name]# activate the ws 'data'for s in range(len(wb.sheetnames)): if wb.sheetnames[s] == ws: breakwb.active = s# experiemnt with styles# https://openpyxl.readthedocs.io/en/stable/styles.html# work with named Stylesstyle_header = NamedStyle(name="style_header")style_header.font = Font(name= 'Arial', bold=True, size=12, color="00FFFF00")# register named style for Fontswb.add_named_style(style_header)# https://stackoverflow.com/questions/59877670/how-to-give-font-color-to-a-range-of-cells-columns-and-rows-in-excel-worksheetfor row in ws.iter_rows(min_row=1, max_col=var_no_columns, max_row=var_no_rows): #max row and col (range) for cell in row: # apply the named style for the Font cell.style = 'style_header' # fill with red background cell.fill = PatternFill(start_color="FF0000", fill_type = "solid") #html colors # https://stackoverflow.com/questions/25588918/how-to-freeze-entire-header-row-in-openpyxlws.freeze_panes = ws["A2"]# https://stackoverflow.com/questions/39529662/python-automatically-adjust-width-of-an-excel-files-columnsfor column_cells in ws.columns: length = max(len(str(cell.value)) for cell in column_cells) ws.column_dimensions[column_cells[0].column_letter].width = length# save the wb.save(var_new_excel_file)# close the workbookwb.close() just make sure the example has a clean start .... Propagate Python environmentfor KNIME on MacOSX withMiniforge / Minicondaconfigure how to handle the environmentdefault = just check the namesdata1determine local pathv_path_data_folderlist filemy_data*try todeletethe existing filemy_data.xlsxvar_new_excel_file"my_data_new.xlsx"Propagate Python environmentfor KNIME on Windows withMiniforge / Minicondaconfigure how to handle the environmentdefault = just check the namesuse some styles on Excel file headerv_max_rows=> Maximum Number of RowsNumber of Columnsvar_sheet_name" Sheet1" conda_environment_kaggle_macosx Data Generator Extract ContextProperties Java Edit Variable List Files/Folders DeleteFiles/Folders Excel Writer Table Rowto Variable Try (VariablePorts) Catch Errors(Var Ports) Merge Variables StringConfiguration Merge Variables conda_environment_kaggle_windows Python Script(Labs) Extract TableDimension IntegerConfiguration Table Columnto Variable StringConfiguration Merge Variables Excel file header format with KNIME and OpenPyxlFreeze the top row, autosize the columns and set a style import knime_io as knio# https://openpyxl.readthedocs.io/en/stable/tutorial.html#loading-from-a-file# conda install -c anaconda openpyxlfrom openpyxl import load_workbookfrom openpyxl import Workbookfrom openpyxl.styles import NamedStyle, Border, Side, PatternFill, Font, GradientFill, Alignmentimport openpyxlimport osvar_data_path = knio.flow_variables['v_path_data_folder']# print("var_data_path: ", var_data_path )var_path_excel_file = var_data_path + os.path.sep + "my_data.xlsx"# print("var_path_excel_file: ", var_path_excel_file )var_sheet_name = knio.flow_variables['var_sheet_name']var_new_excel_file = knio.flow_variables['v_path_new_excel_file']var_no_rows = knio.flow_variables['v_max_rows']var_no_columns = knio.flow_variables['Number Columns']# https://stackoverflow.com/questions/51128029/copying-to-a-specific-sheet-openpyxl-destination-sheet-ignored-when-using-copwb = load_workbook(var_path_excel_file)# print list of current sheet namesv_list_sheetnames = wb.sheetnames# print("v_list_sheetnames: ", v_list_sheetnames)# activate the worksheetws = wb[var_sheet_name]# activate the ws 'data'for s in range(len(wb.sheetnames)): if wb.sheetnames[s] == ws: breakwb.active = s# experiemnt with styles# https://openpyxl.readthedocs.io/en/stable/styles.html# work with named Stylesstyle_header = NamedStyle(name="style_header")style_header.font = Font(name= 'Arial', bold=True, size=12, color="00FFFF00")# register named style for Fontswb.add_named_style(style_header)# https://stackoverflow.com/questions/59877670/how-to-give-font-color-to-a-range-of-cells-columns-and-rows-in-excel-worksheetfor row in ws.iter_rows(min_row=1, max_col=var_no_columns, max_row=var_no_rows): #max row and col (range) for cell in row: # apply the named style for the Font cell.style = 'style_header' # fill with red background cell.fill = PatternFill(start_color="FF0000", fill_type = "solid") #html colors # https://stackoverflow.com/questions/25588918/how-to-freeze-entire-header-row-in-openpyxlws.freeze_panes = ws["A2"]# https://stackoverflow.com/questions/39529662/python-automatically-adjust-width-of-an-excel-files-columnsfor column_cells in ws.columns: length = max(len(str(cell.value)) for cell in column_cells) ws.column_dimensions[column_cells[0].column_letter].width = length# save the wb.save(var_new_excel_file)# close the workbookwb.close() just make sure the example has a clean start .... Propagate Python environmentfor KNIME on MacOSX withMiniforge / Minicondaconfigure how to handle the environmentdefault = just check the namesdata1determine local pathv_path_data_folderlist filemy_data*try todeletethe existing filemy_data.xlsxvar_new_excel_file"my_data_new.xlsx"Propagate Python environmentfor KNIME on Windows withMiniforge / Minicondaconfigure how to handle the environmentdefault = just check the namesuse some styles on Excel file headerv_max_rows=> Maximum Number of RowsNumber of Columnsvar_sheet_name" Sheet1" conda_environment_kaggle_macosx Data Generator Extract ContextProperties Java Edit Variable List Files/Folders DeleteFiles/Folders Excel Writer Table Rowto Variable Try (VariablePorts) Catch Errors(Var Ports) Merge Variables StringConfiguration Merge Variables conda_environment_kaggle_windows Python Script(Labs) Extract TableDimension IntegerConfiguration Table Columnto Variable StringConfiguration Merge Variables

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Created by: m_lauber
Created at: 2022-10-31
On NodePit since: 2022-11-01
Last update: 2024-12-28
Created with KNIME version: v4.6.3
Tags: pythonopenpyxlknimestyleheader

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