How do I replicate the following batch command using python subprocess module?
如何使用python子进程模块复制以下批处理命令？
myprogram < myinput.in > myoutput.out
In other words, how do I run myprogram using the contents of myinput.in as the standard input and myoutput.out as standard output?
换句话说，如何使用myinput.in的内容作为标准输入和myoutput.out作为标准输出来运行myprogram？
2 个解决方案
#1
27
The following should work:
以下应该有效：
myinput = open('myinput.in')
myoutput = open('myoutput.out', 'w')
p = subprocess.Popen('myprogram.exe', stdin=myinput, stdout=myoutput)
p.wait()
myoutput.flush()
#2
-5
opens a file in subprocess. It is a blocking call. So control will not go to next line till, file is open.
在子进程中打开一个文件。这是一个阻止电话。所以控制不会到下一行，直到文件打开。
ss=subprocess.Popen(FileName,shell=True)
ss.communicate()
#1
27
The following should work:
以下应该有效：
myinput = open('myinput.in')
myoutput = open('myoutput.out', 'w')
p = subprocess.Popen('myprogram.exe', stdin=myinput, stdout=myoutput)
p.wait()
myoutput.flush()
#2
-5
opens a file in subprocess. It is a blocking call. So control will not go to next line till, file is open.
在子进程中打开一个文件。这是一个阻止电话。所以控制不会到下一行，直到文件打开。
ss=subprocess.Popen(FileName,shell=True)
ss.communicate()