Error in from functools import reduce for multi dataframe diffrent column inner join

Hey there, thanks for sharing your code and error details! It looks like you’re running into issues because you’re trying to use dfs.index(next_df) to find the position of a DataFrame in your list, but DataFrames can’t be compared directly like that—hence the “truth value of a DataFrame is ambiguous” error. Also, your merge logic assumes a sequential join with different keys, but the reduce pattern needs careful key management.