diff --git a/python/datetime.py b/python/datetime.py
index 8d8dc1de..0bbbba8a 100644
--- a/python/datetime.py
+++ b/python/datetime.py
@@ -1,36 +1,110 @@
-from time import localtime
+from time import localtime, time
 
-class date:
+class Date:
     def __init__(self, year: int, month: int, day: int):
-        self.year = year
-        self.month = month
-        self.day = day
+        self.year, self.month, self.day = year, month, day
 
-    @staticmethod
-    def today():
+    @classmethod
+    def today(cls):
         t = localtime()
-        return date(t.tm_year, t.tm_mon, t.tm_mday)
-    
+        return cls(t.tm_year, t.tm_mon, t.tm_mday)
+
     def __str__(self):
         return f"{self.year}-{self.month:02}-{self.day:02}"
-    
+
     def __repr__(self):
-        return f"datetime.date({self.year}, {self.month}, {self.day})"
+        return f"Date({self.year}, {self.month}, {self.day})"
 
-class datetime(date):
+    def __eq__(self, other: 'Date') -> bool:
+        return (self.year, self.month, self.day) == (other.year, other.month, other.day)
+
+    def __lt__(self, other: 'Date') -> bool:
+        return (self.year, self.month, self.day) < (other.year, other.month, other.day)
+
+    def __le__(self, other: 'Date') -> bool:
+        return self < other or self == other
+
+    def __gt__(self, other: 'Date') -> bool:
+        return not (self < other or self == other)
+
+    def __ge__(self, other: 'Date') -> bool:
+        return not (self < other)
+
+    def __add__(self, timedelta) -> 'Date':
+        # Implement the addition logic here
+        pass
+
+    def __sub__(self, timedelta) -> 'Date':
+        # Implement the subtraction logic here
+        pass
+
+class DateTime(Date):
     def __init__(self, year: int, month: int, day: int, hour: int, minute: int, second: int):
-        super(datetime, self).__init__(year, month, day)
-        self.hour = hour
-        self.minute = minute
-        self.second = second
+        super().__init__(year, month, day)
+        self.hour, self.minute, self.second = hour, minute, second
 
-    @staticmethod
-    def now():
+    @classmethod
+    def now(cls):
         t = localtime()
-        return datetime(t.tm_year, t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec)
+        return cls(t.tm_year, t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec)
 
     def __str__(self):
-        return f"{self.year}-{self.month:02}-{self.day:02} {self.hour:02}:{self.minute:02}:{self.second:02}"
+        date_str = super().__str__()
+        return f"{date_str} {self.hour:02}:{self.minute:02}:{self.second:02}"
 
     def __repr__(self):
-        return f"datetime.datetime({self.year}, {self.month}, {self.day}, {self.hour}, {self.minute}, {self.second})"
\ No newline at end of file
+        return f"DateTime({self.year}, {self.month}, {self.day}, {self.hour}, {self.minute}, {self.second})"
+
+    def __eq__(self, other) -> bool:
+        return (self.year, self.month, self.day, self.hour, self.minute, self.second) == \
+               (other.year, other.month, other.day, other.hour, other.minute, other.second)
+
+    def __lt__(self, other) -> bool:
+        return (self.year, self.month, self.day, self.hour, self.minute, self.second) < \
+               (other.year, other.month, other.day, other.hour, other.minute, other.second)
+
+    def __le__(self, other) -> bool:
+        return self < other or self == other
+
+    def __gt__(self, other) -> bool:
+        return not (self < other or self == other)
+
+    def __ge__(self, other) -> bool:
+        return not (self < other)
+
+    def __add__(self, timedelta) -> 'DateTime':
+        # Implement the addition logic here
+        pass
+
+    def __sub__(self, timedelta) -> 'DateTime':
+        # Implement the subtraction logic here
+        pass
+
+    def timestamp(self) -> float:
+        return time()
+
+class TimeDelta:
+    def __init__(self, days, seconds):
+        self.days, self.seconds = days, seconds
+
+    def __repr__(self) -> str:
+        return f"TimeDelta({self.days}, {self.seconds})"
+
+    def __eq__(self, other: 'TimeDelta') -> bool:
+        return (self.days, self.seconds) == (other.days, other.seconds)
+
+    def __lt__(self, other: 'TimeDelta') -> bool:
+        return (self.days, self.seconds) < (other.days, other.seconds)
+
+    def __le__(self, other: 'TimeDelta') -> bool:
+        return self < other or self == other
+
+    def __gt__(self, other: 'TimeDelta') -> bool:
+        return not (self < other or self == other)
+
+    def __ge__(self, other: 'TimeDelta') -> bool:
+        return not (self < other)
+
+class TimeZone:
+    def __init__(self, delta: TimeDelta):
+        self.delta = delta