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Create synchronization_in_threads.py

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	`1`	`+`
	`2`	`+`
	`3`	`+import threading`
	`4`	`+import time`
	`5`	`+# global variable x`
	`6`	`+x = 0`
	`7`	`+`
	`8`	`+def Tfunc(i,lock):`
	`9`	`+ lock.acquire()`
	`10`	`+ print('from thread %d' %i)`
	`11`	`+ lock.release()`
	`12`	`+`
	`13`	`+`
	`14`	`+ # creating a lock`
	`15`	`+lock = threading.Lock()`
	`16`	`+`
	`17`	`+ # creating threads`
	`18`	`+t1 = threading.Thread(target=Tfunc, args=(1,lock,))`
	`19`	`+t2 = threading.Thread(target=Tfunc, args=(2,lock,))`
	`20`	`+`
	`21`	`+ # start threads`
	`22`	`+t1.start()`
	`23`	`+t2.start()`
	`24`	`+`
	`25`	`+ # wait until threads finish their job`
	`26`	`+t1.join()`
	`27`	`+time.sleep(5)`
	`28`	`+t2.join()`
	`29`	`+`

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