Re: Getting the name of the file that imported current module

[kedra marbun]

On Jul 5, 6:29 am, Steven D'Aprano st...@remove-this-
cybersource.com.au wrote:
 On Sun, 04 Jul 2010 21:05:56 +, Tobiah wrote:
  foo.py:

  import bar
  bar.show_importer()

  output:

  'foo' or 'foo.py' or 'path/to/foo' etc.

  Possible?

 I don't think so. Your question isn't even well-defined. Given three
 modules:

 # a.py
 import b
 import d

 # b.py
 import d

 # c.py
 import a
 import d
 import b
 print d.show_importer()

 and you run c.py, what do you expect d.show_importer() to return?

 And what about from d import show_importer -- does that count as
 importing d?

 Why do you think that a module needs to know what other modules imported
 it? I can't imagine why this would be necessary, what are you intending
 to do with it?

 --
 Steven

i guess he just likes to play things around, entertains his
imagination, no need for practical reason for that
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Re: Getting the name of the file that imported current module

[kedra marbun]

On Jul 5, 4:05 am, Tobiah t...@rcsreg.com wrote:
 foo.py:

 import bar
 bar.show_importer()

 output:

 'foo' or 'foo.py' or 'path/to/foo' etc.

 Possible?

 Thanks,

 Tobiah

if what you mean by 'importer' is the one that really cause py to load
the mod, then why not dynamically set it?

foo.py
--
import bar, sys
if '_importer' not in bar.__dict__: bar._importer =
sys.modules[__name__]

bar.py
--
def show_importer(): return _importer

or

you could borrow space from builtins. i don't know if it breaks any
rule ;)

foo.py
--
def set_importer(mod):
bdict = (__builtins__.__dict__ if __name__ == '__main__' else
__builtins__)
if '_importer' not in bdict:
bdict['_importer'] = {mod : sys.modules[__name__]}
else:
if mod not in bdict:
bdict['_importer'][mod] = sys.modules[__name__]

import bar
set_importer(bar)
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Re: Getting the name of the file that imported current module

[Mark Lawrence]

On 04/07/2010 22:05, Tobiah wrote:

foo.py:

import bar
bar.show_importer()

output:

'foo' or 'foo.py' or 'path/to/foo' etc.

Possible?

Thanks,

Tobiah


 import re
 re.__file__
'C:\\Python26\\lib\\re.pyc'

HTH.

Mark Lawrence.

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Re: Getting the name of the file that imported current module

[Michael Torrie]

On 07/04/2010 03:17 PM, Mark Lawrence wrote:
 On 04/07/2010 22:05, Tobiah wrote:
 foo.py:

 import bar
 bar.show_importer()

 output:

 'foo' or 'foo.py' or 'path/to/foo' etc.

 Possible?

 Thanks,

 Tobiah
 
   import re
   re.__file__
 'C:\\Python26\\lib\\re.pyc'

I think this is exactly opposite of what he was asking for.

Given than any number of modules can import other modules but each
module really only exists once in the Python object space (normally)
would mean that what the OP is asking for isn't possible.
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Re: Getting the name of the file that imported current module

[Steven D'Aprano]

On Sun, 04 Jul 2010 21:05:56 +, Tobiah wrote:

 foo.py:
 
 import bar
 bar.show_importer()
 
 output:
 
 'foo' or 'foo.py' or 'path/to/foo' etc.
 
 Possible?

I don't think so. Your question isn't even well-defined. Given three 
modules:

# a.py
import b
import d

# b.py
import d

# c.py
import a
import d
import b
print d.show_importer()

and you run c.py, what do you expect d.show_importer() to return?

And what about from d import show_importer -- does that count as 
importing d?

Why do you think that a module needs to know what other modules imported 
it? I can't imagine why this would be necessary, what are you intending 
to do with it?



-- 
Steven
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Re: Getting the name of the file that imported current module

[Mark Lawrence]

On 05/07/2010 00:25, Michael Torrie wrote:

On 07/04/2010 03:17 PM, Mark Lawrence wrote:

On 04/07/2010 22:05, Tobiah wrote:

foo.py:

import bar
bar.show_importer()

output:

'foo' or 'foo.py' or 'path/to/foo' etc.

Possible?

Thanks,

Tobiah


import re
re.__file__
'C:\\Python26\\lib\\re.pyc'


I think this is exactly opposite of what he was asking for.

Given than any number of modules can import other modules but each
module really only exists once in the Python object space (normally)
would mean that what the OP is asking for isn't possible.


You're absolutely correct, thou shalt not post late at night when very 
tired. :)


Cheers.

Mark Lawrence

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