在Pandas中将列添加到HDF文件的框架中

I am working with a large dataset in CSV format. I am trying to process the data column-by-column, then append the data to a frame in an HDF file. All of this is done using Pandas. My motivation is that, while the entire dataset is much bigger than my physical memory, the column size is managable. At a later stage I will be performing feature-wise logistic regression by loading the columns back into memory one by one and operating on them.I am working with a large dataset in CSV format