program to convert decimal to binary using recursion

Python/decimal to binary.py

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+
+# Convert a decimal number to binary using concept of "Recursion":
+def decimal_to_binary(num):
+    if num == 0:
+        return ""
+    else:
+        return decimal_to_binary(num // 2) + str(num % 2)
+
+
+# Example usage
+decimal_number = 42
+binary_number = decimal_to_binary(decimal_number)
+if binary_number == "":
+    binary_number = "0"  # Handle case for zero
+print(f"The binary representation of {decimal_number} is {binary_number}.")