Re: load_module for import entire package

2013-12-12 Thread Sergey 
 This should work:
  def get_obj():
 tmp = load_package_strict(tmp, basedir)
 return tmp.main.TTT()
Thank you:)
I can only mention that it is working only if __init__.py of pkg contains line: 
import main

To avoid modules caching I copy package to the new folder with another name and 
import it using this new name.

tmp_pkg = t + str(randint(1,1)) + '_' + 
time.strftime(%Y%m%d%H%M%S, time.localtime())
shutil.copytree(pkg_dir, basedir + '/x/' + dir_name + '/' + tmp_pkg)

pkg = load_package_strict(tmp_pkg, basedir + '/x/' + dir_name)
result = pkg.main.TTT()
What is the risk of this method? What are 3 methods of doing the same?

--
Sergey

-- 
https://mail.python.org/mailman/listinfo/python-list

Re: load_module for import entire package

2013-12-11 Thread Dave Angel 
On Tue, 10 Dec 2013 23:28:31 -0800 (PST), Sergey sh0...@gmail.com 
wrote:

def get_obj():
  pkg = load_package_strict(tmp, basedir)
  from tmp import main
  return main.TTT()



It is working, but if package code changes on disc at runtime and I 
call get_obj again, it returns instance of class, loaded for the 
first time previously. 

That's how import works.  Once something has been imported,  the 
module information is cached. There are three ways to defeat that, 
but they're all risky. 




How to replace line from tmp import main by getting properties of 

pkg?

No clue what you mean by that.

--
DaveA

--
https://mail.python.org/mailman/listinfo/python-list

Re: load_module for import entire package

2013-12-11 Thread alex23 

On 11/12/2013 5:28 PM, Sergey wrote:

def get_obj():
   pkg = load_package_strict(tmp, basedir)
   from tmp import main
   return main.TTT()

It is working, but if package code changes on disc at runtime and I call 
get_obj again, it returns instance of class, loaded for the first time 
previously.

How to replace line from tmp import main by getting properties of pkg?


Your `load_package_strict` function loads the `tmp` module and binds it 
to the name `pkg`. You then use a regular import to load `tmp.main`, 
which is _cached_; all subsequent occurrences reuse the initially 
imported value.


This should work:

def get_obj():
   tmp = load_package_strict(tmp, basedir)
   return tmp.main.TTT()
--
https://mail.python.org/mailman/listinfo/python-list

load_module for import entire package

2013-12-10 Thread Sergey 
Hi,
I need to import package and instantiate a class, defined in one of modules, 
located in package.

Package is located in folder tmp. basedir - path to running python script.

I'm doing it so:

import imp

def load_package_strict(p_package_name, p_package_path):
f, filename, description = imp.find_module(p_package_name, [p_package_path])
try:
result = imp.load_module(p_package_name, f, filename, description)
finally:
if f: f.close
return result

def get_obj():
  pkg = load_package_strict(tmp, basedir)
  from tmp import main
  return main.TTT()

It is working, but if package code changes on disc at runtime and I call 
get_obj again, it returns instance of class, loaded for the first time 
previously. 

How to replace line from tmp import main by getting properties of pkg?

Regards,
Sergey
-- 
https://mail.python.org/mailman/listinfo/python-list