fix: Build the ChromeNotFoundError message as one string

CHANGELOG.md

@@ -11,6 +11,9 @@ where X.Y.Z is the semver of the most recent choreographer release.
 
 ## [Unreleased]
 
+### Fixed
+- Build the `ChromeNotFoundError` message as one string, so it no longer prints as a tuple [[#314](https://github.com/plotly/choreographer/pull/314)], with thanks to @Blizzeq for the contribution!
+
 
 ## [1.4.0] -- 2026-09-16
 

src/choreographer/browsers/chromium.py

@@ -190,8 +190,8 @@ def __init__(
             raise ChromeNotFoundError(
                 "Browser not found. You can use get_chrome() or "
                 "choreo_get_chrome from bash. please see documentation. "
-                f"Local copy ignored: {self.skip_local}. ",
-                f"Path calculated:: {self.path}.",
+                f"Local copy ignored: {self.skip_local}. "
+                f"Path calculated: {self.path}.",
             )
         _logger.info(f"Found chromium path: {self.path}")
 

tests/test_chromium.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from choreographer.browsers.chromium import Chromium
+import pytest
+
+from choreographer.browsers.chromium import ChromeNotFoundError, Chromium
 from choreographer.channels import Pipe
 
 
@@ -64,3 +66,16 @@ def test_empty_proxy_server_uses_environment_fallback(tmp_path, monkeypatch):
     cli = _get_cli(tmp_path, proxy_server="")
 
     assert "--proxy-server=http://environment.example:8080" in cli
+
+
+def test_browser_not_found_message_is_one_string(tmp_path):
+    missing = tmp_path / "chrome"
+    channel = Pipe()
+    try:
+        with pytest.raises(ChromeNotFoundError) as excinfo:
+            Chromium(channel, missing)
+    finally:
+        channel.close()
+
+    assert len(excinfo.value.args) == 1
+    assert f"Path calculated: {missing}." in str(excinfo.value)