Performing an inner join of data from Excel using Python

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I have an Excel file. In the images below there are the two sheets it has. I am trying to create a code in Python that takes into account the ISIN's that have "Weight" in image 2 (sheet 2) and then filter the data from those same ISIN in sheet 1.

Spreadsheets

Sheet 1 Image1/Sheet1 Sheet 2 Image2/Sheet2

Code

import pandas as pd

import matplotlib.pyplot as plt

import numpy as np

%matplotlib inline 

pd.set_option("precision", 3)

portfolio = pd.read_excel("Track Record.xlsx", sheet_name="Track Record")

portfolio.set_index( "Date", inplace=True)

portfolio_t= portfolio.T

weights = pd.read_excel("Track Record.xlsx", sheet_name="Weights").dropna()

#inner_join= pd.merge(portfolio_t,weights, on='ISIN' , how='inner')

I was trying to solve my problem with a merge, but perhaps that is not the best way.



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