Python at least one sheet must be visible

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To ensure that at least one sheet is visible in Python, you can use the openpyxl library to manipulate Excel files. Here’s a step-by-step explanation with examples:

1. Install openpyxl

Before proceeding, make sure you have the openpyxl library installed. You can install it using pip with the following command: 

    pip install openpyxl

2. Load Excel file

To load an Excel file using openpyxl, you can use the load_workbook() function and pass the file path as the parameter. For example: 

    from openpyxl import load_workbook
  
wb = load_workbook('example.xlsx')

3. Check visible sheets

Once you have loaded the workbook, you can access its sheets using the sheetnames attribute. This attribute returns a list of sheet names. To check if at least one sheet is visible, you can iterate over the sheet names and check the sheet_state attribute. The sheet_state attribute can have the following values: ‘visible’, ‘hidden’, ‘veryHidden’. Here’s an example: 

    for sheet_name in wb.sheetnames:
    sheet = wb[sheet_name]
    if sheet.sheet_state == 'visible':
        print(sheet_name + ' is visible')

4. Example

Let’s say you have an Excel file named ‘example.xlsx’ with three sheets named ‘Sheet1’, ‘Sheet2’, and ‘Sheet3’. ‘Sheet2’ is hidden, and the rest of the sheets are visible. You can use the following code to check if at least one sheet is visible: 

    from openpyxl import load_workbook
  
wb = load_workbook('example.xlsx')
  
for sheet_name in wb.sheetnames:
    sheet = wb[sheet_name]
    if sheet.sheet_state == 'visible':
        print(sheet_name + ' is visible')

Running this code will output: 

    Sheet1 is visible
Sheet3 is visible

As you can see, ‘Sheet2’ is not considered in the output because it is hidden. You can modify the code according to your specific requirements.

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