Calculate percentage between startTime, currentTime and endTime - python

Question

I want to make a progress bar. To achieve this first i need percentage.

For example i watch the movie. i know when movie starts (startTime) and when ends (endTime).

startTime = "09:40" currentTime = "11:52" endTime = "13:05"

So i need to calculate current percentage of playing.

Any help is appreciated, thanks!

Answer 1

from datetime import datetime

timefmt = "%H:%M"
startTime = datetime.strptime("09:40", timefmt)
currentTime = datetime.strptime("11:52", timefmt)
endTime = datetime.strptime("13:05", timefmt)

ratio = (currentTime - startTime) / (endTime - startTime)
print(f"{ratio:5.2%}")

you can parse your strings into a datetime object; those can be subtracted (which will return a timedelta object).

then just use sting formatting in order to print the ratio in percent.

---

for this to work in python 2.7 you need to call total_seconds() on the timedelta objects and replace the f-string with str.format:

ratio = (currentTime - startTime).total_seconds() / (endTime - startTime).total_seconds()
print("{:5.2%}".format(ratio))

Answer 2

It can be done using the datetime module as already mentioned in an answer, but this is a more brute-force or general approach and would work even if the time is in HH:MM:SS format

startTime = "09:40" 
currentTime = "11:52" 
endTime = "13:05"

def changeToMin(time):
    arr = list(map(int, time.split(':')))
    seconds = 0
    for n,i in enumerate(arr):
        seconds += i*60**(len(arr)-n-1)
    return seconds
    
def precentage(start, end, current):
    return (current-start)*100/(end-start)
    
print(precentage(changeToMin(startTime), changeToMin(endTime), changeToMin(currentTime)))