skipna option skiprows argument skip_footer argument slice method slicing arrays - lists - social security administration (ssa) solve function sort argument sort method sorted function sorting arrays - finding elements in sorted array - in numpy - algorithms for - finding elements in sorted array indirect sorts - in pandas - levels - lists - sortlevel function sort_columns argument sort_index method spacesstructuring code with - spacing around subplots - span specialized frequencies data munging for - split method split-apply-combine splitting arrays - sql databases sql module sqlite databases sqrt function square function squeeze argument ssa (social security administration) stable sorting stacked format start index startswith method statistical methods std method stdout step index stop index strftime method strict evaluation/language strides/strided view strings converting to datetime - data types for - manipulating - methods for - vectorized string methods - with regular expressions - strip method strongly-typed languages - strptime method structs structured arrays - benefits of defined mainpulating nested data types - style argument styling for matplotlib - sub method subn method subperiod subplots - subplots method subplots_adjust method subplot_kw option subsets for arrays - subtract function sudo command suffixes argument sum method summary statistics by level correlation and covariance - isin function - unique function - value_counts function - superperiod svd function swapaxes method swaplevel function swapping axes in arrays - symmetric_difference method syntactic sugar index www it-ebooks info