Issue #13489 Solved

Age_difference/main.py

@@ -0,0 +1,45 @@
+"""
+Algorithm to calculate age difference and display a message with safe input handling.
+
+Wikipedia: https://en.wikipedia.org/wiki/Chronological_age
+"""
+
+
+def age_difference(boy_age: int, girl_age: int) -> int:
+    """
+    Returns the absolute age difference between two people.
+
+    >>> age_difference(22, 20)
+    2
+    >>> age_difference(20, 22)
+    2
+    >>> age_difference(30, 30)
+    0
+    """
+    return abs(boy_age - girl_age)
+
+
+def get_valid_age(prompt: str) -> int:
+    """Prompt the user until a valid non-negative integer age is entered."""
+    while True:
+        try:
+            age = int(input(prompt))
+            if age < 0:
+                raise ValueError("Age cannot be negative.")
+            return age
+        except ValueError as e:
+            print(f"Invalid input: {e}. Please enter a valid positive integer age.\n")
+
+
+if __name__ == "__main__":
+    try:
+        boy_name = input("Boy Name: ").strip().capitalize()
+        boy_age = get_valid_age("Boy age: ")
+        girl_name = input("Girl Name: ").strip().capitalize()
+        girl_age = get_valid_age("Girl age: ")
+
+        diff = age_difference(boy_age, girl_age)
+        print(f"{boy_name} loves {girl_name}. Age difference is {diff}\n")
+
+    except KeyboardInterrupt:
+        print("\nProgram interrupted by user. Exiting safely...")