txtstats

#!/usr/bin/env python
################################################################################
# txtstats - a quick and dirty tool to print some statistics about the given
# text, either from file(s) or from stdin. The format looks something like this:
#
#    values: 100
#    sum:    6490.44
#    min:    44.54
#    max:    111.89
#    mean:   64.9044
#    stddev: 10.4792
#
# Version 2
# Matthew Malensek <matt@malensek.net>
################################################################################

def printstats(fname, printname=False):
    import numpy as np
    data = np.loadtxt(fname=fname)
    strformat = """%s
    values: %d
    sum:    %g
    min:    %g
    max:    %g
    mean:   %g
    stddev: %g\n"""
    print(strformat % (fname if printname is True else "",
        len(data), data.sum(), data.min(), data.max(), data.mean(), data.std()))

if __name__ == "__main__":
    import sys
    nargs = len(sys.argv)
    if nargs > 1:
        for fname in sys.argv[1:]:
            try:
                printstats(fname, printname=(nargs > 2))
            except Exception as e:
                print("Error reading '%s':\n%s" % (fname, e))
    elif sys.stdin.isatty() == False:
        printstats(sys.stdin)
    else:
        print("Usage: %s file1 [file2 ...]" % (sys.argv[0]))