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Add ipy_signals for better ctrl + C processing
vivainio -
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@@ -0,0 +1,45
1 """ Advanced signal (e.g. ctrl+C) handling for IPython
2
3 So far, this only ignores ctrl + C in IPython file a subprocess
4 is executing, to get closer to how a "proper" shell behaves.
5
6 Other signal processing may be implemented later on.
7
8 If _ip.options.verbose is true, show exit status if nonzero
9
10 """
11
12 import signal,os
13 import IPython.ipapi
14 import subprocess
15
16 ip = IPython.ipapi.get()
17
18
19 def new_ipsystem(cmd):
20 """ ctrl+c ignoring replacement for system() command in iplib.
21
22 Ignore ctrl + c in IPython process during the command execution.
23 The subprocess will still get the ctrl + c signal.
24 """
25
26 p = subprocess.Popen(cmd, shell = True)
27
28 old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
29 pid,status = os.waitpid(p.pid,0)
30 signal.signal(signal.SIGINT, old_handler)
31 if status and ip.options.verbose:
32 print "[exit status: %d]" % status
33
34 def init():
35 o = ip.options
36 try:
37 o.verbose
38 except AttributeError:
39 o.allow_new_attr (True )
40 o.verbose = 0
41
42 ip.IP.system = new_ipsystem
43
44 init()
45 No newline at end of file
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