在不杀死解释器的情况下停止运行python脚本 [英] Stop running python script without killing the interpreter

问题描述

之前，在解释器中，我可以通过按Ctrl + C来杀死以execfile("somescript.py")开头的python脚本，而不会杀死解释器.这将导致 KeyboardInterrupt 异常，该异常将停止脚本并让我再次使用解释器.但是，现在(我怀疑这是python的较新版本)，当我在运行脚本时按Ctrl + C时，它有时也会终止解释器，使我回到Linux命令行.由于某种原因，每次我用Ctrl + C杀死脚本时，都不会发生这种情况.

Before, I were able to kill a python script started with execfile("somescript.py") while in interpreter by pressing Ctrl + C without killing the interpreter. This would cause a KeyboardInterrupt exception that would stop the script and let me use the interpreter again. However, now (I suspect this came with newer version of python), when I press Ctrl + C while running a script, it sometimes also kills the interpreter, throwing me back to Linux command line. For some reason this doesn't happen every time I kill a script with Ctrl + C.

这很烦人，因为我经常交互使用python解释器，即我用execfile("somescript.py")运行一些脚本，处理它在解释器中生成的数据，等等.以前，如果某些脚本卡住了，我可以杀死而不丢失它在卡住之前计算出的数据(或我存储在变量中的数据).

This is annoying because I often use python interpreter interactively, i.e. I run some script with execfile("somescript.py"), play around with the data it produces in the interpreter, etc. Before, if some script got stuck, I was able to kill it and not lose the data it had calculated (or I had stored in variables) before getting stuck.

所以我的问题是，如何立即在解释器中杀死以execfile()开头的python脚本而又不杀死解释器?

So my question is, how do I kill a python script started with execfile() in the interpreter now without killing the interpreter?

推荐答案

通常，这是通过try语句完成的:

Usually, this is done with a try statement:

>>> def f():
...     try:
...         exec(open("somefile.py").read())
...     except Exception as e: print(e)
... 
>>> f()
^CTraceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 3, in f
  File "<string>", line 4, in <module>
  File "<string>", line 3, in g
KeyboardInterrupt
>>>

somefile.py:

def g():
    while True: pass
g()

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