How to convert an H:MM:SS time string to seconds in Python?

How to convert an H:MM:SS time string to seconds in Python?

To convert an H:MM:SS time string to seconds in Python, you can parse the string and calculate the total number of seconds. Here's a function that accomplishes this:

def time_to_seconds(time_str): # Split the time string into hours, minutes, and seconds hours, minutes, seconds = map(int, time_str.split(':')) # Calculate the total seconds total_seconds = hours * 3600 + minutes * 60 + seconds return total_seconds # Example usage: time_str = "1:30:45" seconds = time_to_seconds(time_str) print(f"{time_str} is equal to {seconds} seconds.")

In this code:

  • We define a function time_to_seconds that takes a time string in the format H:MM:SS as input.

  • We use the split(':') method to split the input string into hours, minutes, and seconds.

  • We convert the split values to integers using map(int, ...).

  • We calculate the total number of seconds by multiplying hours by 3600 (the number of seconds in an hour), minutes by 60 (the number of seconds in a minute), and adding the seconds.

  • Finally, we return the total number of seconds.

You can use this function to convert time strings to seconds for further calculations or formatting as needed.

Examples

  1. Convert H:MM:SS time string to seconds using split() and calculation:

    • Description: This method involves splitting the time string by ':' and then converting each part to seconds. Finally, the total seconds are calculated by adding all the converted parts.
    • Code:
      def time_to_seconds(time_str): hours, minutes, seconds = map(int, time_str.split(':')) total_seconds = hours * 3600 + minutes * 60 + seconds return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  2. Python convert H:MM:SS time string to seconds with datetime.timedelta:

    • Description: This approach utilizes datetime.timedelta to parse the time string and then extracts the total seconds from the timedelta object.
    • Code:
      from datetime import timedelta def time_to_seconds(time_str): delta = timedelta(hours=int(time_str.split(':')[0]), minutes=int(time_str.split(':')[1]), seconds=int(time_str.split(':')[2])) total_seconds = delta.total_seconds() return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  3. Convert H:MM:SS time string to seconds in Python using regex and calculation:

    • Description: This method involves using a regular expression to extract hours, minutes, and seconds from the time string and then calculating the total seconds.
    • Code:
      import re def time_to_seconds(time_str): hours, minutes, seconds = map(int, re.findall(r'\d+', time_str)) total_seconds = hours * 3600 + minutes * 60 + seconds return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  4. Python convert H:MM:SS time string to seconds with strptime() and mktime():

    • Description: This approach involves using strptime() to parse the time string and then mktime() to convert it to a timestamp. Finally, the difference between the timestamp and the start of the day is calculated.
    • Code:
      from time import mktime, strptime def time_to_seconds(time_str): struct_time = strptime(time_str, '%H:%M:%S') total_seconds = mktime(struct_time) - mktime(strptime('00:00:00', '%H:%M:%S')) return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  5. Convert H:MM:SS time string to seconds in Python using timedelta parsing:

    • Description: This method involves using timedelta parsing directly on the time string, which automatically calculates the total seconds.
    • Code:
      from datetime import datetime, timedelta def time_to_seconds(time_str): total_seconds = (datetime.strptime(time_str, '%H:%M:%S') - datetime(1900, 1, 1)).total_seconds() return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  6. Python convert H:MM:SS time string to seconds with sum():

    • Description: This approach involves using sum() along with list comprehension to convert each time unit to seconds and then summing them up.
    • Code:
      def time_to_seconds(time_str): hours, minutes, seconds = map(int, time_str.split(':')) total_seconds = sum([hours * 3600, minutes * 60, seconds]) return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  7. Convert H:MM:SS time string to seconds in Python using division and multiplication:

    • Description: This method involves converting each time unit to seconds by multiplying and summing them up.
    • Code:
      def time_to_seconds(time_str): hours, minutes, seconds = map(int, time_str.split(':')) total_seconds = hours * 3600 + minutes * 60 + seconds return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  8. Python convert H:MM:SS time string to seconds with timedelta and total_seconds():

    • Description: This approach utilizes timedelta parsing directly on the time string and then extracts the total seconds from the timedelta object using the total_seconds() method.
    • Code:
      from datetime import timedelta def time_to_seconds(time_str): total_seconds = timedelta(hours=int(time_str.split(':')[0]), minutes=int(time_str.split(':')[1]), seconds=int(time_str.split(':')[2])).total_seconds() return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  9. Convert H:MM:SS time string to seconds in Python using string manipulation and arithmetic:

    • Description: This method involves splitting the time string by ':' and then converting each part to seconds. Finally, the total seconds are calculated by arithmetic operations.
    • Code:
      def time_to_seconds(time_str): hours, minutes, seconds = map(int, time_str.split(':')) total_seconds = (hours * 3600) + (minutes * 60) + seconds return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

  10. Python convert H:MM:SS time string to seconds using pandas and Timedelta:

    • Description: This method involves using pd.Timedelta() from the pandas library to convert the time string into a timedelta object, and then extracting the total seconds.
    • Code:
      import pandas as pd def time_to_seconds(time_str): total_seconds = pd.Timedelta(time_str).total_seconds() return total_seconds time_str = '1:30:45' seconds = time_to_seconds(time_str)

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