如何從expect捕獲shell變量中的python輸出？

Question

我想從 python 中獲取 pw 值，比如

spawn python3 $pscript
expect "password:"
send "$enc_password\r"
set outcome $expect_out(buffer) --getting empty array in outcome

文件.py

import keyring
pw = keyring.get_password("system","user")
print(pw)

如果有其他方法可以做到這一點，請告訴我。

Answer 1

我只是錯過了一件事：

spawn python3 $pscript
expect "password:"
send "$enc_password\r"
expect "blah" --this extra expect, else the outcome will be an empty array
set outcome $expect_out(buffer)