Add comparison example for __lt__ dunder method in README.md and implement corresponding example script

Author: andrelbd1

python_utils/dunder_methods/README.md

@@ -6,6 +6,9 @@
 - [Equality check for all attributes](__eq__1.py)
 - [Equality check for a single attribute](__eq__2.py)
 
+##### `__lt__`
+- [Comparison for less-than operation](__lt__1.py)
+
 ##### `__format__`
 - [Custom string formatting](__format__1.py)
 - [Custom string formatting](__format__2.py)

python_utils/dunder_methods/__lt__1.py

@@ -0,0 +1,22 @@
+from typing import Self
+
+
+class Fruit:
+    def __init__(self, *, name: str, grams: float) -> None:
+        self.name = name
+        self.grams = grams
+
+    def __lt__(self, other: Self) -> bool:
+        return self.grams < other.grams
+
+
+def main() -> None:
+    f1: Fruit = Fruit(name='Apple', grams=100)
+    f2: Fruit = Fruit(name='Banana', grams=150)
+
+    print(f1 > f2)  # False
+    print(f2 > f1)  # True
+
+
+if __name__ == '__main__':
+    main()