Python file scan application with multithreading

How to use multithreading in this code and limit the thread; example 4 thread.

import os
import glob
from pymongo import Connection
from gridfs import GridFS

db = Connection().microfilm
fs = GridFS(db)

def scandirs(path):
    for currentFile in glob.glob( os.path.join(path, '*') ):
        if os.path.isdir(currentFile):
            print 'Entering directory: ' + currentFile
            scandirs(currentFile)

        base, ext = os.path.splitext(currentFile)
        if ( ext == '.tif'):
                print "Processing file: " + currentFile
                fName = os.path.basename(currentFile)
                with open(currentFile) as gfsFile:
                        oid = fs.put(gfsFile, conten开发者_StackOverflow社区t_type="image/tiff", filename=fName)

scandirs('./')

Thanks in advance.

Create a pool(list) of Thread objects of size n, use is_alive to check if any is finished, so then you can assign a new directory scan in it. Also you should subclass the Thread class and define a run method to adapt to your problem, details on how to do this are in the docs.

first import Threading then Threading.init() which part u want to put in thread name it run()(This is the overridden method of base class Thread) or Thread(target="your threaded function",args=[]) call start method with thread object.