Python Pandas: DataFrame filter negative values

Question

I was wondering how I can remove all indexes that containing negative values inside their column. I am using Pandas DataFrames.

Documentation Pandas DataFr

Answer 1

If you want to check the values of an adjacent group of columns, for example from the second to the tenth:

df[(df.ix[:,2:10] > 0).all(1)]

You can also use a range

df[(df.ix[:,range(1,10,3)] > 0).all(1)]

and an own list of indices

mylist=[1,2,4,8]
df[(df.ix[:, mylist] > 0).all(1)]