python类库31[进程subprocess]

python类库31[进程subprocess]     subprocess.Popen用来建立子进程。html   1）Popen启动新的进程与父进程并行执行，默认父进程不等待新进程结束。python def  TestPopen():    import  subprocess   p = subprocess.Popen( " dir " ,shell = True)    for  i 

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