Python threading download file

Improve this question. Marconi Marconi 3, 4 4 gold badges 45 45 silver badges 71 71 bronze badges. You should accept some answers to some of your questions, otherwise people may not bother helping you. Add a comment. Active Oldest Votes. Improve this answer. Alex Martelli Alex Martelli k gold badges silver badges bronze badges.

For example, if target file was bytes long and you want to fetch using three thread: Thread 1: fetches bytes 1 to Thread 2: fetches bytes to Thread 3: fetches bytes to You would pre-allocate an empty file of the original size, and write back to the respective positions within the file.

Mitch Wheat Mitch Wheat k 42 42 gold badges silver badges bronze badges. Tor Valamo Tor Valamo The reason for threads is to multiplex the download. Multiple concurrent TCP sessions will deliver much higher throughput than a single session, even on a low-bandwidth DSL account especially on that! You have to synchronise because you don't control the order in which the concurrent fetches will complete. Sign up or log in Sign up using Google. Sign up using Facebook.

Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Args: bytes int : size of the file in bytes Return: str : containing size with formatting. Received keyboard interrupt, quitting threads. StreamHandler ch. FileHandler logFile fh. Improve this question.

Ciasto piekarz. Ciasto piekarz Ciasto piekarz 1 1 gold badge 13 13 silver badges 23 23 bronze badges. Add a comment. Active Oldest Votes. URLError , er: above change this to something like urlerror" or just e , I can't help but think of emergency room when I see this. If you plan to distinguish exceptions, I would use a more descriptive name.

Another alternative may be for you to use the logging module. I would rephrase as: Method that writes downloaded file data to disk. Improve this answer. Glad you found a solution. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Who is building clouds for the independent developer? Probably like process1 downloads the first 20 files in the folder, process2 downloads the next 20 simultaneously and so on.

You can define a function that takes the link and a list of filenames then it will loop through the list and download files , then create a thread for each list and have it target the function.

For example:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to use multithreading in python to download multiple files simultaneously Ask Question. Asked 4 years, 4 months ago. Active 4 years, 4 months ago.

Viewed 4k times. Right now, I'm doing as follows: import urllib, os os. Improve this question. Add a comment.