如注解中所建议的，使用pexpect。
参见pexpect on github、the official docs和this handy python for beginners walkthrough on pexpect。
举个例子。假设这是您的x.sh文件：

#!/bin/bash

echo -n "Continue? [Y/N]: "
read answer
if [ "$answer" != "${answer#[Yy]}" ]; then
        echo -n "continuing.."
else
        echo -n "exiting.."
fi

字符串
你可以这样做：

import os, sys
import pexpect

# It's probably cleaner to use an absolute path here
# I just didn't want to include my directories..
# This will run x.sh from your current directory.
child = pexpect.spawn(os.path.join(os.getcwd(),'x.sh'))
child.logfile = sys.stdout
# Note I have to escape characters here because
# expect processes regular expressions.
child.expect("Continue\? \[Y/N\]: ")
child.sendline("Y")
child.expect("continuing..")
child.expect(pexpect.EOF)
print(child.before)

型
python脚本的结果：

Continue? [Y/N]: Y
Y
continuing..

型
尽管我不得不说，如果你有能力编辑它，那么在bash脚本中使用pexpect有点不寻常。更简单的做法是编辑脚本，使其不再提示：

#!/bin/bash

echo -n "Continue? [Y/N]: "
answer=y
if [ "$answer" != "${answer#[Yy]}" ]; then
        echo "continuing.."
else
        echo "exiting.."
fi

型
然后你可以自由地使用subprocess来执行它。

import os
import subprocess

subprocess.call(os.path.join(os.getcwd(),"x.sh"))

型
或者，如果您希望将输出作为变量：

import os
import subprocess

p = subprocess.Popen(os.path.join(os.getcwd(),"x.sh"), stdout=subprocess.PIPE)
out, error = p.communicate()

print(out)

型
我知道这对你来说可能是不可能的，但值得注意。