How to Solve Time Conversion Problems in Python?

Time conversion refers to converting a time in one format to another format. For instance, converting a time from the 12-hour format to the 24-hour format. Here are some examples of how to solve time conversion problems in Python:

1. Converting a time from the 12-hour format to the 24-hour format:
``````def convert_time_12_to_24(time_12):
"""
Convert a time from the 12-hour format to the 24-hour format.
"""
# Split the time string into hours, minutes, and period
hours, minutes_period = time_12.split(':')
minutes, period = minutes_period.split()

# Convert the hours to an integer
hours = int(hours)

# If the period is PM and the hours are not 12, add 12 to the hours
if period == 'PM' and hours != 12:
hours += 12

# If the period is AM and the hours are 12, set the hours to 0
elif period == 'AM' and hours == 12:
hours = 0

# Convert the hours and minutes to strings and pad them with zeros
hours = str(hours).zfill(2)
minutes = str(minutes).zfill(2)

# Return the time in the 24-hour format
return f"{hours}:{minutes}"``````

Example usage:

``````>>> convert_time_12_to_24('06:30 PM')
'18:30'``````
1. Converting a time from the 24-hour format to the 12-hour format:
``````def convert_time_24_to_12(time_24):
"""
Convert a time from the 24-hour format to the 12-hour format.
"""
# Split the time string into hours and minutes
hours, minutes = time_24.split(':')

# Convert the hours to an integer
hours = int(hours)

# Determine the period (AM or PM)
period = 'AM' if hours < 12 else 'PM'

# Convert the hours to the 12-hour format
hours = hours % 12
if hours == 0:
hours = 12

# Convert the hours and minutes to strings and pad them with zeros
hours = str(hours).zfill(2)
minutes = str(minutes).zfill(2)

# Return the time in the 12-hour format
return f"{hours}:{minutes} {period}"``````

Example usage:

``````>>> convert_time_24_to_12('18:30')
'06:30 PM'``````
1. Converting a duration in seconds to a string in the format “HH:MM:SS”:
``````def convert_seconds_to_duration(seconds):
"""
Convert a duration in seconds to a string in the format "HH:MM:SS".
"""
# Calculate the hours, minutes, and seconds
hours = seconds // 3600
minutes = (seconds % 3600) // 60
seconds = seconds % 60

# Convert the hours, minutes, and seconds to strings and pad them with zeros
hours = str(hours).zfill(2)
minutes = str(minutes).zfill(2)
seconds = str(seconds).zfill(2)

# Return the duration as a string in the format "HH:MM:SS"
return f"{hours}:{minutes}:{seconds}"``````

Example usage:

``````>>> convert_seconds_to_duration(3661)
'01:01:01'``````