How to find the last row in a column using openpyxl normal workbook?

How to find the last row in a column using openpyxl normal workbook?

To find the last row in a specific column using the openpyxl library for working with Excel files, you can use the max_row attribute of the Worksheet object to get the total number of rows in the worksheet, and then loop through the specified column to find the last non-empty cell.

Here's how you can do it:

import openpyxl # Load the Excel workbook workbook = openpyxl.load_workbook('your_workbook.xlsx') # Select the desired worksheet worksheet = workbook['Sheet1'] # Replace 'Sheet1' with the actual sheet name # Specify the column letter (e.g., 'A', 'B', 'C', etc.) column_letter = 'A' # Replace with the desired column letter # Get the total number of rows in the worksheet total_rows = worksheet.max_row # Initialize a variable to store the last row last_row = None # Loop through the column to find the last non-empty cell for row in range(total_rows, 0, -1): cell_value = worksheet[f'{column_letter}{row}'].value if cell_value is not None: last_row = row break # Print the last row number print(f"The last row in column {column_letter} is {last_row}") # Close the workbook workbook.close()

Replace 'your_workbook.xlsx' with the path to your Excel workbook file and 'Sheet1' with the actual name of the sheet you want to work with. Also, replace 'A' with the desired column letter.

This code loads the workbook, gets the total number of rows, and then iterates through the specified column from the bottom to the top to find the last non-empty cell. The last_row variable will store the row number of the last non-empty cell.

Remember to close the workbook using the close() method when you're done working with it.

Examples

  1. How to find the last row in a specific column of an Excel workbook using openpyxl?

    • Description: This query seeks information on how to determine the index of the last non-empty row in a particular column of an Excel workbook using the openpyxl library. This is a common task when processing Excel data where you need to locate the last row in a specific column.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A (assuming column A is used) last_row = ws.max_row while ws[f'A{last_row}'].value is None: last_row -= 1

  2. How to find the last row in a column with empty cells in an Excel workbook using openpyxl?

    • Description: This query addresses finding the index of the last row in a specific column of an Excel workbook using openpyxl, even when there are empty cells within the column. It's useful for accurately locating the last data-containing row.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with empty cells last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  3. How to find the last row in a column with mixed data types in an Excel workbook using openpyxl?

    • Description: This query focuses on finding the index of the last row in a specific column of an Excel workbook using openpyxl, considering scenarios where the column contains mixed data types (e.g., numbers and strings). It's essential for handling diverse data types accurately.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with mixed data types last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  4. How to find the last row in a specific column with formatting applied in an Excel workbook using openpyxl?

    • Description: This query addresses locating the last row in a particular column of an Excel workbook using openpyxl, even when the column has formatting applied (e.g., merged cells, cell styles). It's crucial for accurately identifying the last data-containing row.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with formatting applied last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  5. How to find the last row in a column with filtered data in an Excel workbook using openpyxl?

    • Description: This query focuses on determining the index of the last row in a specific column of an Excel workbook using openpyxl, even when the column contains filtered data. It's essential for handling filtered data accurately.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with filtered data last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  6. How to find the last row in a column with formulas in an Excel workbook using openpyxl?

    • Description: This query addresses finding the index of the last row in a specific column of an Excel workbook using openpyxl, considering scenarios where the column contains formulas. It's essential for accurately handling formula-containing cells.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with formulas last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  7. How to find the last row in a column with hidden rows in an Excel workbook using openpyxl?

    • Description: This query focuses on determining the index of the last row in a specific column of an Excel workbook using openpyxl, even when the column contains hidden rows. It's crucial for accurately handling hidden rows in Excel data.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with hidden rows last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  8. How to find the last row in a column with frozen panes in an Excel workbook using openpyxl?

    • Description: This query addresses locating the last row in a particular column of an Excel workbook using openpyxl, even when frozen panes are applied. Frozen panes can affect the view but don't change the underlying data structure.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with frozen panes last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  9. How to find the last row in a column with named ranges in an Excel workbook using openpyxl?

    • Description: This query focuses on determining the index of the last row in a specific column of an Excel workbook using openpyxl, even when named ranges are defined. Named ranges provide a way to reference cells by a specific name rather than their cell references.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with named ranges last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

  10. How to find the last row in a column with tables in an Excel workbook using openpyxl?

    • Description: This query addresses finding the index of the last row in a specific column of an Excel workbook using openpyxl, even when the column is part of a table (Excel's "Format as Table" feature). Tables provide structured data organization and styling in Excel.
    • Code Implementation:
      from openpyxl import load_workbook # Load the Excel workbook wb = load_workbook('example.xlsx') # Select the desired worksheet ws = wb['Sheet1'] # Find the last row in column A with tables last_row = len(list(ws.iter_rows(max_col=1, values_only=True)))

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