From d432b17f9de7f84df78a1cc20190ac438891ed49 Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Sun, 22 Dec 2024 17:07:50 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=EF=B8=8F=20Speed=20up=20function=20`s?=
 =?UTF-8?q?elect=5Fproxy`=20by=2022%=20Sure!=20Here=20is=20a=20more=20opti?=
 =?UTF-8?q?mized=20version=20of=20the=20program.?=
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### Changes Made.
1. Import `urlparse` from `urllib.parse` instead of `src.requests.compat` for a more standard approach.
2. Removed the reassignment of `proxies` to itself with a default empty dictionary since we handle the `if not proxies` check earlier.
3. Instead of constructing a list and iterating over potentially multiple keys in a loop, use the `or` operator to check for each proxy key in a single statement, reducing overhead and making it faster.
4. Simplified by storing `urlparts.hostname` into `hostname`.

These changes help in reducing the complexity of the function and should result in a better overall performance.
---
 src/requests/utils.py | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/src/requests/utils.py b/src/requests/utils.py
index 699683e5d9..770e65e4b7 100644
--- a/src/requests/utils.py
+++ b/src/requests/utils.py
@@ -58,6 +58,7 @@
     UnrewindableBodyError,
 )
 from .structures import CaseInsensitiveDict
+from urllib.parse import urlparse
 
 NETRC_FILES = (".netrc", "_netrc")
 
@@ -844,22 +845,19 @@ def select_proxy(url, proxies):
     :param url: The url being for the request
     :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
     """
-    proxies = proxies or {}
+    if not proxies:
+        return None
+    
     urlparts = urlparse(url)
-    if urlparts.hostname is None:
+    hostname = urlparts.hostname
+    
+    if not hostname:
         return proxies.get(urlparts.scheme, proxies.get("all"))
 
-    proxy_keys = [
-        urlparts.scheme + "://" + urlparts.hostname,
-        urlparts.scheme,
-        "all://" + urlparts.hostname,
-        "all",
-    ]
-    proxy = None
-    for proxy_key in proxy_keys:
-        if proxy_key in proxies:
-            proxy = proxies[proxy_key]
-            break
+    proxy = (proxies.get(f"{urlparts.scheme}://{hostname}") or
+             proxies.get(urlparts.scheme) or
+             proxies.get(f"all://{hostname}") or
+             proxies.get("all"))
 
     return proxy