valid ipv4 code

Author: tyler-le

test_valid_ipv4.py

@@ -0,0 +1,27 @@
+#A valid IPv4 address is a string that contains 
+# four decimal numbers separated by periods, 
+# where each decimal number is between 0 and 255.
+
+def is_valid_IPv4(ip_address):
+    # Split the IP address string into a list of 4 decimal numbers
+    parts = ip_address.split(".")
+
+    # Check that there are exactly 4 parts
+    if len(parts) != 4:
+        return False
+
+    # Check that each part is an integer between 0 and 255
+    for part in parts:
+        try:
+            # Convert each part to an integer
+            num = int(part)
+        except ValueError:
+            # If a part cannot be converted to an integer, the address is not valid
+            return False
+
+        # Check that the integer is between 0 and 255
+        if num < 0 or num > 255:
+            return False
+
+    # If all checks pass, the address is valid
+    return True