Pandas Equivalent of R's which()

Question

Variations of this question have been asked before, I\'m still having trouble understanding how to actually slice a python series/pandas dataframe based on conditions that

Answer 1

I may not understand clearly the question, but it looks like the response is easier than what you think:

using pandas DataFrame:

df['colname'] > somenumberIchoose

returns a pandas series with True / False values and the original index of the DataFrame.

Then you can use that boolean series on the original DataFrame and get the subset you are looking for:

df[df['colname'] > somenumberIchoose]

should be enough.

See http://pandas.pydata.org/pandas-docs/stable/indexing.html#boolean-indexing