Bypass YouTube whole download throttling

YouTube is throttling downloads without the Range header, which is used by browsers when streaming (for example with an implementation of the <video> HTML tag ) but not on whole downloads. We can easily bypass this, however, by just adding Range: bytes=0- to the request. The result is all the same bytes as before but in a much shorter time.

pytube/request.py

@@ -9,7 +9,7 @@ from urllib.request import urlopen
 def _execute_request(url: str) -> Any:
     if not url.lower().startswith("http"):
         raise ValueError
-    return urlopen(Request(url, headers={"User-Agent": "Mozilla/5.0"}))  # nosec
+    return urlopen(Request(url, headers={"User-Agent": "Mozilla/5.0", "Range": "bytes=0-"}))  # nosec
 
 
 def get(url) -> str: