您可以使用DataFrame的select_dtypes方法.它包括两个参数include和exclude.所以isNumeric看起来像:

You could use select_dtypes method of DataFrame. It includes two parameters include and exclude. So isNumeric would look like:

numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']

newdf = df.select_dtypes(include=numerics)