Apply format to a cell after being written in XlsxWriter
I'm the author of that module and unfortunately that isn't possible.
It is a planned feature, and (a small) part of the internal infrastructure is there to support it, but it isn't currently available and I can't say when it will be.
Update: this feature was never implemented and is no longer planned.
Another workaround is to use conditional_format
, and use type='no_errors'
:
worksheet.conditional_format(your_range, {'type': 'no_errors', 'format': your_format})
One way of doing that - using one wrapper method to write cell, and helper method to overwrite cell's value and style
import xlsxwriterclass XLSGenerator: def __init__(self): self.workbook = xlsxwriter.Workbook('file.xls') sheet1 = self.workbook.add_worksheet('sheet1') sheet2 = self.workbook.add_worksheet('sheet2') self.sheets = {'sheet1': sheet1, 'sheet2': sheet2} # dictionary with all written cells self.written_cells = {sheet: {} for sheet in self.sheets} def write_cell(self, sheet_name, cell, value, cell_format_dict=None): """Writes value and style, and saves it in self.written_cells""" sheet = self.sheets[sheet_name] if cell_format_dict: cell_format = self.workbook.add_format(cell_format_dict) sheet.write(cell, value, cell_format) else: cell_format_dict = None sheet.write(cell, value) # save sheet_name, cell and cell_value, and cell_format (dict) # example ['sheet1']['C12'] = ('some_text', {'font_size': 14, 'bold': True} self.written_cells[sheet_name][cell] = (value, cell_format_dict) def apply_style(self, sheet_name, cell, cell_format_dict): """Apply style for any cell, with value or not. Overwrites cell with joined cell_format_dict and existing format and with existing or blank value""" written_cell_data = self.written_cells[sheet_name].get(cell) if written_cell_data: existing_value, existing_cell_format_dict = self.written_cells[sheet_name][cell] updated_format = dict(existing_cell_format_dict or {}, **cell_format_dict) else: existing_value = None updated_format = cell_format_dict self.write_cell(sheet_name, cell, existing_value, updated_format)
Usage like this
generator = XLSGenerator()generator.write_cell('sheet1', 'A1', '10')generator.write_cell('sheet1', 'B2', '20')generator.write_cell('sheet1', 'C3', '30')table_borders = {"left": 1, 'right': 1, 'top': 1, 'bottom': 1}for cell in ('A1', 'A2', 'A3', 'B1', 'B2', 'B3', 'C1', 'C2', 'C3'): generator.apply_style('sheet1', cell, table_borders)generator.workbook.close()