On Mon, Jan 23, 2012 at 03:40:26AM +0530, Jaidev Deshpande wrote: > Dear List, > > Suppose I have a function myfunc() in a module called mymodule.py [...] > Now when I delete the original function and import the changed one, > > In[2]: del myfunc > In[3]: from mymodule import myfunc > > it doesn't work as per the new changes. I have to close IPython and > start all over again.
As far as I know, this is not an IPython specific problem, but is due to the way Python imports modules. Here are two alternatives: 1) Instead of "from mymodule import myfunc", instead use import mymodule result = mymodule.myfunc() # not myfunc() on its own After changing the source file, do "reload(mymodule)" and Python will pick up the changes. 2) You can manually force a reload: import sys del sys.modules['mymodule'] from mymodule import myfunc But two warnings: * reload() is very simple-minded. It is not guaranteed to change the behaviour of existing objects just because the module is reloaded. The most common example of this is if you use classes: reloading the module after modifying the class will NOT change the behaviour of any existing instances. E.g.: import mymodule instance = mymodule.MyClass() # now edit MyClass in mymodule and change the method behaviour reload(mymodule) instance.method() # instance will keep the OLD behaviour, not the new * Because reload() so often doesn't work as expected, in Python 3, it has been removed from the built-ins and is now found in the imp module. -- Steven _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
