Extract the longest numeric suffix from each line in stdin and output the sum.

total_last_column.py

#!/usr/bin/env python

"""Extract the longest numeric suffix from each line in stdin and output the sum."""

from __future__ import print_function
import sys
import argparse

numstr = '.0123456789'


def numSuffix(s):
    for i in range(len(s) - 1, -1, -1):
        if s[i] not in numstr:
            return float(s[i + 1:] or 0.0)
    return 0.0


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.parse_args()

    lines = sys.stdin.readlines()
    s = 0
    for line in lines:
        line = line.strip()
        s += numSuffix(line)
    print()
    print(s)


if __name__ == '__main__':
    main()