[Python] how to extract unstructured table in pdf file using python

I try to extract table in pdf file in pymupdf with the following code

for table in tables:
df = table.to_pandas()
print (df)


The result looks like this

Col0 | Col1 | Col2
------------------------------------------------------
function | % Time Spend | % Time Spend % Time Spend
| 1.5% 0.5 | 5% 0.4 0.6% 0.1


How do I extract it correctly like this:

Col0 | Col1 | Col2 | Col3 | Col4 | Col5 | Col6
-----------------------------------------------------------
function | % Time | Spend | % Time | Spend | % Time | Spend
| 1.5% | 0.5 | 5% | 0.4 | 0.6% |b0.1

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