Python | Adjusting rows and columns of an excel file using openpyxl module - GeeksforGeeks

11 Jul, 2018
Prerequisites : Excel file using openpyxl writing | reading
Worksheet objects have row_dimensions and column_dimensions attributes that control row heights and column widths. A sheet’s row_dimensions and column_dimensions are dictionary-like values; row_dimensions contains RowDimension objects and column_dimensions contains ColumnDimension objects. In row_dimensions, one can access one of the objects using the number of the row (in this case, 1 or 2). In column_dimensions, one can access one of the objects using the letter of the column (in this case, A or B).
Code #1 : Program to set the dimensions of the cells.
# import openpyxl moduleimport openpyxl  # Call a Workbook() function of openpyxl # to create a new blank Workbook objectwb = openpyxl.Workbook()  # Get workbook active sheet  # from the active attribute. sheet = wb.active  # writing to the specified cellsheet.cell(row = 1, column = 1).value = ' hello '  sheet.cell(row = 2, column = 2).value = ' everyone '  # set the height of the rowsheet.row_dimensions[1].height = 70  # set the width of the columnsheet.column_dimensions['B'].width = 20  # save the filewb.save('dimension.xlsx')
Output: 
A rectangular area of cells can be merged into a single cell with the merge_cells() sheet method. The argument to merge_cells() is a single string of the top-left and bottom-right cells of the rectangular area to be merged.
Code #2 : Program to merge the cells.
import openpyxlwb = openpyxl.Workbook()sheet = wb.active  # merge cell from A2 to D4 i.e.# A2, B2, C2, D2, A3, B3, C3, D3, A4, B4, C4 and D4 .# A2:D4' merges 12 cells into a single cell. sheet.merge_cells('A2:D4')  sheet.cell(row = 2, column = 1).value = 'Twelve cells join together.'  # merge cell C6 and D6sheet.merge_cells('C6:D6')  sheet.cell(row = 6, column = 6).value = 'Two merge cells.'  wb.save('merge.xlsx')
Output: 
To unmerge cells, call the unmerge_cells() sheet method.
Code #3 : Program to unmerge the cells.
import openpyxlwb = openpyxl.load_workbook('merge.xlsx')sheet = wb.active  # unmerge the cellssheet.unmerge_cells('A2:D4')  sheet.unmerge_cells('C6:D6')  wb.save('merge.xlsx')
Output: 
To customize font styles in cells, important, import the Font() function from the openpyxl.styles module.
Code #4 : Program to set the font of the text.
import openpyxl  # import Font function from openpyxlfrom openpyxl.styles import Font  wb = openpyxl.Workbook()sheet = wb.active  sheet.cell(row = 1, column = 1).value = "Ankit Rai"  # set the size of the cell to 24sheet.cell(row = 1, column = 1).font = Font(size = 24 )  sheet.cell(row = 2, column = 2).value = "Ankit Rai"  # set the font style to italicsheet.cell(row = 2, column = 2).font = Font(size = 24, italic = True)  sheet.cell(row = 3, column = 3).value = "Ankit Rai"  # set the font style to boldsheet.cell(row = 3, column = 3).font = Font(size = 24, bold = True)  sheet.cell(row = 4, column = 4).value = "Ankit Rai"  # set the font name to 'Times New Roman'sheet.cell(row = 4, column = 4).font = Font(size = 24, name = 'Times New Roman')  wb.save('styles.xlsx')
Output:
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