Add: Time Conversion Function

Author: Jeel Gajera

Diff for: DIRECTORY.md

@@ -174,6 +174,7 @@
   * [Roman Numerals](conversions/roman_numerals.py)
   * [Speed Conversions](conversions/speed_conversions.py)
   * [Temperature Conversions](conversions/temperature_conversions.py)
+  * [Time Conversions](conversions/time_conversions.py)
   * [Volume Conversions](conversions/volume_conversions.py)
   * [Weight Conversion](conversions/weight_conversion.py)
 

Diff for: conversions/time_conversions.py

@@ -0,0 +1,54 @@
+"""
+A unit of time is any particular time interval, used as a standard 
+way of measuring or expressing duration. 
+The base unit of time in the International System of Units (SI),
+and by extension most of the Western world, is the second,
+defined as about 9 billion oscillations of the caesium atom. 
+
+WIKI: https://en.wikipedia.org/wiki/Unit_of_time
+"""
+
+time_chart: dict[str, float] = {
+    "seconds": 1.0,
+    "minutes": 60.0,  # 1 minute = 60 sec
+    "hours": 3600.0,  # 1 hour = 60 minutes = 3600 seconds
+    "days": 86400.0,  # 1 day = 24 hours = 1440 min = 86400 sec
+    "weeks": 604800.0,  # 1 week=7d=168hr=10080min = 604800 sec
+}
+
+time_chart_inverse: dict[str, float] = {
+    "seconds": 1.0,
+    "minutes": 1 / 60.0,  # 1 minute = 1/60 hours
+    "hours": 1 / 3600.0,  # 1 hour = 1/3600 days
+    "days": 1 / 86400.0,  # 1 day = 1/86400 weeks
+    "weeks": 1 / 604800.0,  # 1 week = 1/604800 seconds
+}
+
+def convert_time(time_value: float, unit_from: str, unit_to: str) -> float:
+    """
+    Convert time from one unit to another using the time_chart above.
+
+    >>> convert_time(3600, "seconds", "hours")
+    1.0
+    >>> convert_time(1, "days", "hours")
+    24.0
+    >>> convert_time(120, "minutes", "seconds")
+    7200.0
+    >>> convert_time(2, "weeks", "days")
+    14.0
+    >>> convert_time(0.5, "hours", "minutes")
+    30.0
+    """
+    if unit_to not in time_chart or unit_from not in time_chart_inverse:
+        msg = (
+            f"Incorrect 'from_type' or 'to_type' value: {unit_from!r}, {unit_to!r}\n"
+            f"Valid values are: {', '.join(time_chart_inverse)}"
+        )
+        raise ValueError(msg)
+    return round(time_value * time_chart[unit_from] * time_chart_inverse[unit_to], 3)
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()
+
+    print(convert_time(3600, "seconds", "hours"))