Valueerror: sheet ‘sheet1’ already exists and if_sheet_exists is set to ‘error’.

Error: ValueError

An error occurred with the code and the program raised a ValueError.

Error Description

The error is caused when attempting to create a sheet with a name that already exists, while the setting “if_sheet_exists” is set to “error”.

Solution

To solve this error, you have a few options:

1. Change the value of the “if_sheet_exists” parameter to “overwrite”. This will overwrite the existing sheet if it already exists. Example:

 workbook.create_sheet('Sheet1', if_sheet_exists='overwrite') 

2. Rename the sheet you are trying to create with a different name that doesn’t already exist. Example:

 workbook.create_sheet('NewSheet') 

3. If you want to raise an error when a sheet with the same name already exists, handle the ValueError exception and display a custom error message. Example:

 
try:
    workbook.create_sheet('Sheet1', if_sheet_exists='error')
except ValueError:
    print("Sheet 'Sheet1' already exists. Please choose a different name.")