You want to apply a function that conditionally returns a value based on the selected dataframe column. In [2]: df['data'].apply(lambda x: 'true ... ... <看更多>

... <看更多>

I used 'Apply' function to every row in the pandas data frame and created a ... But if you prefer to use apply and lambda as you mentioned, ... ... <看更多>

A common operation to implement with a pandas dataframe is to run a ... If you want to apply it to all columns, you can use the function ... ... <看更多>

Composable transformations of Python+NumPy programs: differentiate, vectorize, ... If we wanted to apply this function to a batch of inputs at once, ... ... <看更多>