qcut method qr function qt console for ipython quantile analysis - quarterly periods - quartile analysis - question mark (?) quicksort sorting method quotechar option quoting option file mode rfile mode ramachandranprabhu rand function randint function randn function random number generation - random sampling with grouping - random walks example - range function - ranking data defined in pandas - ravel method rc method re module read method read-only mode reading from databases - from text files in pieces - readline functionality readlines method readshapefile method read_clipboard function read_csv function read_frame function read_fwf function read_table function recfunctions module reduce method reduceat method reductions (see also aggregationsdefined in pandas - references defined in python - regress function regular expressions (regexdefined manipulating strings with - reindex method - reload function remove method rename method renaming axis indexes - repeat method replace method replicating arrays - resampling - defined ohlc (open-high-low-closeresampling upsampling - with groupby method with periods - reset_index function reshape method - reshaping arrays - defined with hierarchical indexing - resources return statements returns cumulative returns - defined return indexes - reversed function rfind method right argument right_index argument right_on argument rint function rjust method rollback method rollforward method rolling rolling correlation - rolling_apply function rolling_corr function index www it-ebooks info