A simple python script to calculate volumes and densities of your workout

fitoscript.py

#!/usr/bin/python
# coding: utf-8

import readline
import sys
import re
from decimal import Decimal
from datetime import datetime


def cut(dec, number_of_digits_to_leave=2):
    D = Decimal

    return D(dec).quantize(D(10) ** -number_of_digits_to_leave)


def parse(exercise_log):

    time_str, sets_str = exercise_log.split(';')
    t = datetime.strptime(time_str, "%M:%S").time()
    total_seconds = t.minute*60 + t.second
    
    vol = 0
    for s in sets_str.split():
        kg, reps = re.match(r"(\d+\.\d+|\d+)x(\d+)", s).groups()
        vol += float(kg)*float(reps)

    return vol, t.strftime("%M:%S"), vol/total_seconds*60


if __name__ == "__main__":

    print("Example input: 9:05; 20.5x5 102.5x3 55x5 75x5 102.5x3")

    while True:
        input_str = input("Exercise_log: ")
        if input_str.startswith("exit") or len(input_str.strip()) == 0:
            break
        vol, t_str, den = parse(input_str)
        print("%s kg in %s --> %s kg/min" % (cut(vol), t_str, cut(den)))