[Python] How to fill missing as 0 where the dataset contains data outside the table and has...

How to fill missing as 0 where the dataset contains data outside the table and has multi-header for some columns too without affecting the data outside the table and the multi-headers?



I need to fill 0 where data are missing the data outside the content table should be affect or removed while converting it to csv. Since the index 0 is empty, the file will print unnamed header that also should not happen.

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