You are correct in that xlwings relies on pywin32, whereas openpyxl does not. openpyxl A “.xlsx” excel file is essentially a zip-file containing multiple XML files formatted according to Microsoft’s OOXML specification. With this specification it’s possible to create a program capable of directly reading/writing excel files in just about any programming language. This is … Read more
This answer works with openpyxl 2.0. (The previously accepted answer does not.) The number_format can be changed directly. The given example becomes: from openpyxl import Workbook wb = Workbook() ws = wb.create_sheet(title=”testSheet”) _cell = ws.cell(‘A1’) _cell.number_format=”0.00E+00″
The API for styles changed for openpyxl >= 2. The following code demonstrates the modern API. from openpyxl import Workbook from openpyxl.styles import Alignment wb = Workbook() ws = wb.active # wb.active returns a Worksheet object ws[‘A1’] = “Line 1\nLine 2\nLine 3” ws[‘A1’].alignment = Alignment(wrapText=True) wb.save(“wrap.xlsx”)
As of openpyxl 2.5.4, python 3.4: (subtle changes over the older version below) new_sheet = workbook.create_sheet(sheetName) default_sheet = workbook[‘default’] from copy import copy for row in default_sheet.rows: for cell in row: new_cell = new_sheet.cell(row=cell.row, column=cell.col_idx, value= cell.value) if cell.has_style: new_cell.font = copy(cell.font) new_cell.border = copy(cell.border) new_cell.fill = copy(cell.fill) new_cell.number_format = copy(cell.number_format) new_cell.protection = copy(cell.protection) new_cell.alignment … Read more
With openpyxl version 2.2.5, this snippet works for me: from openpyxl.styles.borders import Border, Side from openpyxl import Workbook thin_border = Border(left=Side(style=”thin”), right=Side(style=”thin”), top=Side(style=”thin”), bottom=Side(style=”thin”)) wb = Workbook() ws = wb.get_active_sheet() # property cell.border should be used instead of cell.style.border ws.cell(row=3, column=2).border = thin_border wb.save(‘border_test.xlsx’) The documentation mentions other values for the style attribute : Value … Read more
In openpyxl 2.6 calling the save_virtual_workbook method issues the following warning: DeprecationWarning: Call to deprecated function save_virtual_workbook (Use a NamedTemporaryFile). At some point save_virtual_workbook will be removed from openpyxl. In Python 3 typical usage to save an openpyxl workbook to a filestream becomes: from io import BytesIO from tempfile import NamedTemporaryFile from openpyxl import Workbook … Read more
I don’t think the library offers you a way to disable this thus you are going to need to use the warnings package directly. A simple and punctual solution to the problem would be doing: import warnings with warnings.catch_warnings(record=True): warnings.simplefilter(“always”) myexcelfile = pd.read_excel(easy_payfile, engine=”openpyxl”)
ws.max_row will give you the number of rows in a worksheet. Since version openpyxl 2.4 you can also access individual rows and columns and use their length to answer the question. len(ws[‘A’]) Though it’s worth noting that for data validation for a single column Excel uses 1:1048576.
Make sure cell isn’t on row one – freeze_panes will freeze rows above the given cell and columns to the left. Example: from openpyxl import Workbook wb = Workbook() ws = wb.active c = ws[‘B2’] ws.freeze_panes = c wb.save(‘test.xlsx’) This will give you a blank worksheet with both row 1 and column A frozen.
As of openpyxl version 1.5.7, I have successfully applied the following worksheet style options… from openpyxl.reader.excel import load_workbook from openpyxl.workbook import Workbook from openpyxl.styles import Color, Fill from openpyxl.cell import Cell # Load the workbook… book = load_workbook(‘foo.xlsx’) # define ws here, in this case I pick the first worksheet in the workbook… # NOTE: … Read more