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Assuming I've written a Python code, which displays the time as long as you keep the program running on the console. Maybe I'll run my code at 4 AM the first time, and next time at 6 PM and so on. So How could I tell my code to start the clock from 5 AM if I'm running it at 5 AM, for example? To me it seems like my code needs to be connected to some external clock. Can someone help me with this? I really didn't know how to search this question on Google. Any hints, tips or solutions will be greatly appreciated! Thanks in advance :)

Liana
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3 Answers3

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You can use the "datetime" module.

The syntax would be the following:

from datetime import datetime
now = datetime.now()
MananGandhi1810
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You are looking for a simple custom timer:

import time

def Timer_Tick(delay): #delay = time to wait in seconds
    while True:
        time_remaining = delay-time.time()%delay # calculate the remaining before execute
        time.sleep(time_remaining) # wait the remaining time
        # Your code

Timer_Tick(300) # This timer execute each 5 minutes (eg. 14:00, 14:05, 14:10, ..)

You can run this code in a separate thread, so it count for you the time and when executed you run your actions.

Carlo Zanocco
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If I understand you correctly you want your code to calculate how long it has been since you started its execution. When your program starts call:

from datetime import datetime

start_time = datetime.now()

Then every time you want to check how long it has been since your code started, call:

datetime.now()-start_time

Which outputs

datetime.timedelta(seconds=5, microseconds=358359)
Jeff
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  • No, I want my program to display what time it is by the time I run it, and keep track of time until I end the program. But I'm not sure how my program should actually know what time it is every time I run it. – Liana Aug 31 '20 at 07:59
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    Then simply calling datetime.now() will show you what time it is at execution – Jeff Aug 31 '20 at 08:02