csvplait

csvplait is a tool for manipulating CSV files either interactively or via script.

Usage

Interactive

$ python csvplait.py

  # Read in the CSV
  > read myfile.csv

  # Pretty print the table
  > pp

  # Drop first 2 columns
  > drop 0 1

  # Keep first five columns (labeled 0 to 4)
  > slice 0 4

  # this -> This
  > titleize 0

  # foo -> bar
  > strsub foo bar 0 2

  > write fixedup.csv

Script

You can easily create a script by writing out your history to a file:

> history script.csvplait

If you want to make your script even more programatic, you can add variables using a bash-like syntax:

$ cat script.csvplait
read $FILENAME
drop 0
write $FILENAME.fixedup

Then, to invoke the script, run csvplait with the script as an argument as well as any environment variables that the script uses:

$ python csvplait.py script.csvplait FILENAME=sept.csv