fix: ensure file handles are properly closed (#1483)

* fix: ensure file handles are properly closed

Fixed resource leaks in two files where file handles were not
properly closed

---------

Co-authored-by: taovinci0 <taovinci0@users.noreply.github.com>
Co-authored-by: Charles Frye <charles@modal.com>

Author: taovinci0

06_gpu_and_ml/speech-to-text/asr_utils.py

@@ -5,6 +5,7 @@
 
 import math
 import os
+from pathlib import Path
 import sys
 import tempfile
 import wave
@@ -82,7 +83,7 @@ def get_bytes_from_wav(location: str) -> bytes:
     if location.startswith("http"):
         bytes = urlopen(location).read()
     else:
-        bytes = open(location, "rb").read()
+        bytes = Path(location).read_bytes()
 
     return bytes
 

07_web_endpoints/fasthtml-checkboxes/fasthtml_checkboxes.py

@@ -30,7 +30,7 @@
 db = modal.Dict.from_name("example-fasthtml-checkboxes-db", create_if_missing=True)
 
 css_path_local = Path(__file__).parent / "styles.css"
-css_path_remote = "/assets/styles.css"
+css_path_remote = Path("/assets/styles.css")
 
 
 @app.function(
@@ -76,7 +76,7 @@ async def on_shutdown():
             db["checkboxes"] = checkboxes
         print("Checkbox state persisted.")
 
-    style = open(css_path_remote, "r").read()
+    style = css_path_remote.read_text()
     app, _ = fh.fast_app(
         # FastHTML uses the ASGI spec, which allows handling of shutdown events
         on_shutdown=[on_shutdown],