Python: get output of the shell command 'history'

问题

My end goal is capture the previous command executed in the terminal. Since ~/.bash_history doesn't include commands from the current terminal session, I can't simply read that file.

From another thread, I found this script:

from subprocess import Popen, PIPE, STDOUT
shell_command = 'bash -i -c "history -r; history"'
event = Popen(shell_command, shell=True, stdin=PIPE, stdout=PIPE, 
    stderr=STDOUT)

output = event.communicate()

That's pretty close to what I'm looking for, but it also will not include the history from the current terminal session since it's started as a subprocess. Is there any way to execute a similar command in the current shell?

回答1:

why don't you read the file directly. ~/.bash_history

for history in open('/home/user/.bash_history'):
    print(history, end='')

来源：https://stackoverflow.com/questions/18319605/python-get-output-of-the-shell-command-history