Do I have to quit python to load a module?

[wang frank]

Hi,

When I edit a module, I have to quit python and then restart python and
then import the module. Are there any way to avoid quit python to load an
updated module? When I am debugging a module code, I need to constantly
make changes. It is not convenient to quit and reload.

Thanks

Frank

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[Peter Otten]

Re: Do I have to quit python to load a module?

wang frank wrote:

When I edit a module, I have to quit python and then restart python and
then import the module. Are there any way to avoid quit python to load an
updated module? When I am debugging a module code, I need to constantly
make changes. It is not convenient to quit and reload.

There is the reload() function, but it has pitfalls. Objects referenced from
without the module are not updated:

>>open("tmp.py" , "w").write( """

.... def f(): print "version one"
.... """)

>>import tmp
>>tmp.f()

version one

>>g = tmp.f
>>open("tmp.py" , "w").write( """

.... def f(): print "version two"
.... """)

>>reload(tmp)

<module 'tmp' from 'tmp.py'>

>>tmp.f()

version two

>>g()

version one

Peter