Python multithreading example in detail

Multithreading usually involves opening a new background thread to handle time-consuming operations. It is also very easy for Python to handle background threads. Today, I found an Demo in the official document.

Example code:

import threading, zipfile

class AsyncZip(threading.Thread):
  def __init__(self, infile, outfile):
    threading.Thread.__init__(self)
    self.infile = infile
    self.outfile = outfile
  def run(self):
    f = zipfile.ZipFile(self.outfile, 'w', zipfile.ZIP_DEFLATED)
    f.write(self.infile)
    f.close()
    print('Finished background zip of:', self.infile)

background = AsyncZip('mydata.txt', 'myarchive.zip')
background.start()
print('The main program continues to run in foreground.')

background.join()  # Wait for the background task to finish
print('Main program waited until background was done.')

Results:

The main program continues to run in foreground.
Finished background zip of: mydata.txt
Main program waited until background was done.
Press any key to continue . . .

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