Question: Python-Pandas-dataframe I have a dataframe df which contain the attribute for user-ID. There is a duplicate user_ID. For ex consider my data is: df['user_ID']=[100, 200,300,400,100,500,600,700,800]

Python-Pandas-dataframe

I have a dataframe df which contain the attribute for user-ID. There is a duplicate user_ID. For ex consider my data is: df['user_ID']=[100, 200,300,400,100,500,600,700,800] How can I show 100 (the value of duplicate user_ID) And how to show the row information for the duplicate user_ID?

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