[Ipython-tickets] [IPython] #197: %run doesn't doesn't update from file correctly with use of IPShellEmbed

[IPython]

#197: %run doesn't doesn't update from file correctly with use of IPShellEmbed
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 Reporter:  quadri@strw.leidenuniv.nl  |       Owner:  fperez
     Type:  defect                     |      Status:  new   
 Priority:  high                       |   Milestone:        
Component:  ipython                    |     Version:        
 Severity:  normal                     |    Keywords:        
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 I was testing some code using %run, then I would modify the code, and run
 it again, but the new output wouldn't reflect the changes that I'd made.
 It appears that the problem is the way that I'm using IPShellEmbed.  Here
 is a simple example of the problem, making use of a file called test.py:
 {{{
 In [1]: cat test.py
 x=3
 from IPython.Shell import IPShellEmbed
 ipshell = IPShellEmbed()

 def func():
     return x

 In [2]: %run test
 In [3]: x
 Out[3]: 3
 In [4]: func()
 Out[4]: 3
 ############ now edit the file so that x=4 ##############
 In [5]: %run test
 In [6]: x
 Out[6]: 3
 In [7]: func()
 Out[7]: 3
 }}}
 However, if I comment out the line "ipshell = IPShellEmbed()" in test.py,
 restart ipython, and repeat the procedure shown above, then last few
 input/output look like this (which I believe is the correct behavior):
 {{{
 ############ now edit the file so that x=4 ##############
 In [5]: %run test
 In [6]: x
 Out[6]: 4
 In [7]: func()
 Out[7]: 4
 }}}
 As far as I can tell the problem is specific to IPShellEmbed(), since it
 doesn't seem to occur when aliasing other functions.  Also, it doesn't
 seem to matter if x is declared inside of func(), or if the import command
 occurs inside of func().

 I'm using ipython 0.8.1, python 2.5.1, Mac OS 10.4.10 on a PPC.

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Ticket URL: <http://ipython.scipy.org/ipython/ipython/ticket/197>
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