Sulkar

#
# Multithread AppJar example

import threading, time
from appJar import gui

def btn_normal(btnName):
    app.addLabel("l1", "Label 1")
    #call sleep Function for Label 2 in main thread
    sleepFunction(3)

Sulkar

import shutil, os

# Function: merge files in current _dataDir folder!
def mergeFiles(_dataDir, _finalFileName):
    if _dataDir == "":
        print("Error no path available")
    else:
        # output Filename
        outfilename = os.path.join(_dataDir, _finalFileName)