support converting objects to string

constyle/_style.py

@@ -39,13 +39,15 @@ def __init__(
         self._prefix = f"\033[{';'.join(str(p) for p in self._params)}m"
         self._end = end
 
-    def __call__(self, string: str) -> str:
+    def __call__(self, string: object) -> str:
         """Apply this style to the given string.
 
+        If the given object isn't a string it will be converted into one.
+
         Args:
             string: The string to apply the style to.
         """
-        return f"{self}{string}{self._end or Style()}" if string else string
+        return f"{self}{string}{self._end or Style()}" if string != "" else string
 
     def __add__(self, other: "Style") -> "Style":
         """Add the attributes of the left and right `Style` operands, returning a new `Style`.
@@ -72,9 +74,11 @@ def __eq__(self, __o: object) -> bool:
         )
 
 
-def style(string: str, *attrs: "Style", end: "Optional[Style]" = None) -> str:
+def style(string: object, *attrs: "Style", end: "Optional[Style]" = None) -> str:
     """Apply the given attributes to the given string.
 
+    If the given object isn't a string it will be converted into one.
+
     Args:
         string: The string to style.
         *attrs: The attributes/styles to apply.

tests/test_constyle.py

@@ -72,3 +72,7 @@ def test_add() -> None:
 
 def test_attribute_call() -> None:
     assert Attributes.BOLD("Hello World") == style("Hello World", Attributes.BOLD)
+
+
+def test_non_string() -> None:
+    assert style(None, Attributes.BOLD) == style("None", Attributes.BOLD)