退出脚本后如何退回到python shell？

Question

My python script has a couple of sys.exit() calls to terminate under certain conditions. To test it, I open up a python shell and run exec(open('script.py').read()) . Whenever I hit a sys.exit() call, the script terminates, along with the python shell, which is irritating.

So I try to get creative and attempt to determine whether my script is run from the commandline or from the shell by examining the stack. Source : Detect if python script is run from an ipython shell, or run from the command line

def exit_now(exit_status):
    os.system('pause')

    if PythonShell:  # how do I return to the python shell ?
        ???
    else:  # exit if we are running from the commandline
        sys.exit(exit_status)

...

# check if this was run from inside a python shell
frames = len(inspect.stack())
if frames > 1:
    PythonShell = True
else:
    PythonShell = False

...

if condition1:
    exit_now(1)

if condition2:
    exit_now(2)

...

exit_now(0)

How do I drop back to the python shell after terminating a script ?

Answer 1

python -i <script>

“ i”用于互动。

Answer 2

How about:

try:
    exec(open('script.py').read())
except SystemExit:
    pass