csvstack

Description

Stack up the rows from multiple CSV files, optionally adding a grouping value to each row:

usage: csvstack [-h] [-d DELIMITER] [-t] [-q QUOTECHAR] [-u {0,1,2,3}] [-b]
                [-p` ESCAPECHAR] [-e ENCODING] [-g GROUPS] [-n GROUP_NAME]
                FILES [FILES ...]

Stack up the rows from multiple CSV files, optionally adding a grouping value.

positional arguments:
  FILES

optional arguments:
  -h, --help            show this help message and exit
  -g GROUPS, --groups GROUPS
                        A comma-seperated list of values to add as "grouping
                        factors", one for each CSV being stacked. These will
                        be added to the stacked CSV as a new column. You may
                        specify a name for the grouping column using the -n
                        flag.
  -n GROUP_NAME, --group-name GROUP_NAME
                        A name for the grouping column, e.g. "year". Only used
                        when also specifying -g.
  --filenames           Use the filename of each input file as its grouping
                        value. When specified, -g will be ignored.

Also see: Arguments common to all utilities.

Examples

Contrived example: joining a set of homogoenous files for different years:

$ csvstack -g 2009,2010 examples/realdata/FY09_EDU_Recipients_by_State.csv examples/realdata/Datagov_FY10_EDU_recp_by_State.csv