彻底搞懂 python进程和线程

这两种写法有区别没有呀

loop=1000000000

x=0

def sum_3( count):

global x

for n in range (count):

x+=n

print ( f"sum_2:{x}" )

y=0

def sum_5( ):

global y

for n in range (1,1000000000):

y+=n

print ( f"sum_2:{y}" )

t1 = threading.Thread(target=sum_3,args = (loop,))

t1.start()

t2 = threading.Thread(target=sum_5)

t2.start()

print(x)

print(y)