Why to use iter_content and chunk_size in python requests -

-

why should use iter_content , specially i'm confused purpose using of chunk_size , have tried using , in every way file seems saved after downloading successfully.

g = requests.get(url, stream=true)  open('c:/users/andriken/desktop/tiger.jpg', 'wb') sav:     chunk in g.iter_content(chunk_size=1000000):         print (chunk)         sav.write(chunk)

help me understand use of iter_content , happen see using 1000000 bytes chunk_size, purpose , results?

this prevent loading entire response memory @ once (it allows implement concurrency while stream response can work while waiting request finish).

the purpose of setting streaming request media. try download 500 mb .mp4 file using requests, want stream response (and write stream in chunks of chunk_size) instead of waiting 500mb loaded python @ once.

if want implement ui feedback (such download progress "downloaded <chunk_size> bytes..."), need stream , chunk. if response contains content-size header, can calculate % completion on every chunk save too.


Comments

Post a Comment

Popular posts from this blog

ios - MKAnnotationView layer is not of expected type: MKLayer -

-
Image
so code works fine logger riddled message. there way rid of or suppress it? postannotation.swift class postannotation: mkpointannotation { //mark: properties let post: post //mark: initialization init(post: post) { self.post = post super.init() self.coordinate = cllocationcoordinate2d(latitude: post.latitude, longitude: post.longitude) self.title = post.title self.subtitle = post.timestring() } } adding annotation let annotation = postannotation(post: post) self.map.addannotation(annotation) func mapview func mapview(_ mapview: mkmapview, viewfor annotation: mkannotation) -> mkannotationview? { if annotation mkuserlocation { return nil } var annotationview = mapview.dequeuereusableannotationview(withidentifier: "pin") as? mkpinannotationview if annotationview == nil { annotationview = mkpinannotationview(annotation: annotation, reuseidentifier: "pin")
Read more

ZeroMQ on Windows, with Qt Creator -

-
i have installed zmq link given below on windows 7. http://zeromq.org/distro:microsoft-windows 1) have c++ project in qt-creator , i'm using zmq c++ binding (zhelpers.hpp etc). 2) have added .lib installed zmq folder qtcreator 3) while compiling, compiler looks _imp__zmq_verion, in .dll files present in .lib have __imp_zmq_version. 4) causing undefined reference zmq_version. anyone else faced problem , has solution ?
Read more

unity3d - Unity SceneManager.LoadScene quits application -

-
i have 2 different scenes 1 named 'main' , other 'game' both added scenes in load. when use scenemanager.loadscene("game"); works no problem when tried return main scene code if (input.getkeydown (keycode.escape)) { scenemanager.loadscene("main"); } strangely game quits. thanks. sorry interruption. somewhere on other script found code. if (input.getkeydown (keycode.escape)) { application.quit (); } that's bad, know...
Read more