How to read currently downloading file -Js OR Python
Let's say that I'm downloading a file and at the same time I want to read it but that the file content always get updated. For example let's assuming that I start read the file when the progress bar was at 60% is there a way to read and wait at the same time for the remaining part which is the 40% of the file content that is currently downloading.
I tired the normal reading method in python:
with open('downloadingfile.mp4', 'rb') as f: data = f.read() # remaining code which is not important
If you know the expected file size, call
read()in a loop until you get to that size.
import time with open('downloadingfile.mp4', 'rb') as f: total_read = 0 while total_read < file_size: data = f.read() if data: total_read += len(data) # process this chunk time.sleep(1)
you must first know that there is an advanced way for threading and this way big companies use but here I am going to show a threading way but it is not advanced try this code I don't know if it is going to work I am new in programming
def Handel_Progress(self , blocknum , blocksize , totalsize): ## calculate the progress readed_data = blocknum * blocksize if totalsize > 0 : download_percentage = readed_data * 100 / totalsize self.setValue(download_percentage) processEvents()# before process even put the name of the application or if you are using python without make to it GUI I don't know what to do