fix mac

Author: RussTedrake

BUILD.bazel

@@ -8,6 +8,20 @@ load("@pip_deps//:requirements.bzl", "requirement")
 load("//book/htmlbook/tools/python:defs.bzl", "rt_py_library", "rt_py_test")
 load("@pip_deps//:requirements.bzl", "requirement")
 
+rt_py_library(
+    name = "htmlbook",
+    srcs = [
+      "__init__.py",
+      "book_name.py"
+    ],
+    imports = [".."],
+    data = [
+        "//:pyproject.toml",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+
 rt_py_test(
     name = "install_html_meta_data",
     srcs = [
@@ -41,20 +55,12 @@ rt_py_test(
     tags = ["requires-network"], 
 )
 
-rt_py_library(
-    name = "book_name",
-    srcs = ["book_name.py"],
-    data = [
-        "//:pyproject.toml",
-    ],
-    visibility = ["//visibility:public"],
-)
 
 rt_py_test(
     name = "check_website",
     srcs = ["check_website.py"],
     deps = [
-        ":book_name",
+        ":htmlbook",
         requirement("requests"),
     ],
     tags = ["requires-network"],

__init__.py

@@ -0,0 +1 @@
+# Blank file to mark directory as Python package

check_website.py

@@ -1,10 +1,14 @@
 import requests
-from book_name import get_project_name
+from htmlbook.book_name import get_project_name
+
 
 def test_website_up():
     url = f"http://{get_project_name()}.mit.edu/python/index.html"
     response = requests.get(url)
-    assert response.status_code == 200, f"Website {url} returned status code {response.status_code}"
+    assert (
+        response.status_code == 200
+    ), f"Website {url} returned status code {response.status_code}"
+
 
 if __name__ == "__main__":
     test_website_up()