Hi,
I have the following problem.
I find in a directory hierarchy some files following a certain sets of
rules:
..../.../../plugin/name1/name1.py
.....
..../.../../plugin/namen/namen.py
each file will in turn have a class with the same name as the filename
(minus .py)
I fetch those names in a list of string and want to import the files /
instantiate the classes.
I block at the beginning and tried this (test.py is a real file)
>>s = 'test.py' eval ('import ' + s)
and get
Traceback (most recent call last):
File "<pyshell#1 >", line 1, in -toplevel-
eval ('import ' + s)
File "<string>", line 1
import test.py
Any clue ?
Thanks
hg 7 1954
.../.../../plugin/name1/name1.py
....
.../.../../plugin/namen/namen.py
I block at the beginning and tried this (test.py is a real file)
>>>s = 'test.py' eval ('import ' + s)
import test.py # This is invalid
import test # This MAY be valid
import name1.name1 # Most probably this is what you want if you have the
aforementioned directory stucture
from name1 import name1 # Or this?
You must also:
1. Have the 'plugin' dir in your sys.path
2. Have at least an empty plugin/name1/__init__.py file
Another alternative is to have plugins/__init__.py and do something like:
from plugins.name1 import name1
You should not overcomplicate things anyway. If you do not need these
name1...namen directories for sure, then just drop them.
Hint: try this (untested)
import os
fnames = os.listdir('plu gins')
for fname in fnames:
if os.path.isdir(f name):
root,ext = os.path.splitex t(fname)
cmd = "from plugins.%s import %s" % (root,root)
print "I should eval this:",cmd
Best,
Laszlo
Traceback (most recent call last):
File "<pyshell#1 >", line 1, in -toplevel-
eval ('import ' + s)
File "<string>", line 1
import test.py
hg wrote:
Hi,
I have the following problem.
I find in a directory hierarchy some files following a certain sets of
rules:
.../.../../plugin/name1/name1.py
....
.../.../../plugin/namen/namen.py
each file will in turn have a class with the same name as the filename
(minus .py)
I fetch those names in a list of string and want to import the files /
instantiate the classes.
I block at the beginning and tried this (test.py is a real file)
>>>s = 'test.py' eval ('import ' + s)
and get
Traceback (most recent call last):
File "<pyshell#1 >", line 1, in -toplevel-
eval ('import ' + s)
File "<string>", line 1
import test.py
Any clue ?
Thanks
hg
OK, from http://mail.python.org/pipermail/pyt...ly/272081.html,
I need to use exec and not eval
hg
hg írta:
hg wrote:
>Hi,
I have the following problem.
I find in a directory hierarchy some files following a certain sets of rules:
.../.../../plugin/name1/name1.py .... .../.../../plugin/namen/namen.py
each file will in turn have a class with the same name as the filename (minus .py)
I fetch those names in a list of string and want to import the files / instantiate the classes.
I block at the beginning and tried this (test.py is a real file)
>>>>s = 'test.py' eval ('import ' + s) >
and get
Traceback (most recent call last): File "<pyshell#1 >", line 1, in -toplevel- eval ('import ' + s) File "<string>", line 1 import test.py
Any clue ?
Thanks
hg
OK, from http://mail.python.org/pipermail/pyt...ly/272081.html,
I need to use exec and not eval
Well, you can also use the 'imp' module. You should read this: http://docs.python.org/lib/module-imp.html
Best,
Laszlo
Laszlo Nagy wrote:
>
>.../.../../plugin/name1/name1.py .... .../.../../plugin/namen/namen.py
I block at the beginning and tried this (test.py is a real file)
>>>>s = 'test.py' eval ('import ' + s) >
import test.py # This is invalid
import test # This MAY be valid
import name1.name1 # Most probably this is what you want if you have the
aforementioned directory stucture
from name1 import name1 # Or this?
You must also:
1. Have the 'plugin' dir in your sys.path
2. Have at least an empty plugin/name1/__init__.py file
Another alternative is to have plugins/__init__.py and do something like:
from plugins.name1 import name1
You should not overcomplicate things anyway. If you do not need these
name1...namen directories for sure, then just drop them.
Hint: try this (untested)
import os
fnames = os.listdir('plu gins')
for fname in fnames:
if os.path.isdir(f name):
root,ext = os.path.splitex t(fname)
cmd = "from plugins.%s import %s" % (root,root)
print "I should eval this:",cmd
Best,
Laszlo
>Traceback (most recent call last): File "<pyshell#1 >", line 1, in -toplevel- eval ('import ' + s) File "<string>", line 1 import test.py
Thanks,
What I am doing is adding plugin support to PyCrust ... so I'm looking for a
mechanism where anyone can develop a plugin and have it loaded by pycrust.
the .py was a typo
why the "...Have at least an empty plugin/name1/__init__.py file..." ?
Thanks,
hg
Thanks,
What I am doing is adding plugin support to PyCrust ... so I'm looking for a
mechanism where anyone can develop a plugin and have it loaded by pycrust.
the .py was a typo
why the "...Have at least an empty plugin/name1/__init__.py file..." ?
When you do
import plugins.name1.n ame1
then "plugins" and "plugins/name1" should be a package, not a module. A
package is a special directory that contains package initialization code
in a __init__.py file. If you do not have the file, then the "plugins"
directory will be only a directory, and it cannot be imported.
For details, see: http://docs.python.org/tut/node8.htm...00000000000000
Laszlo
Laszlo Nagy wrote:
>
>Thanks,
What I am doing is adding plugin support to PyCrust ... so I'm looking for a mechanism where anyone can develop a plugin and have it loaded by pycrust.
the .py was a typo
why the "...Have at least an empty plugin/name1/__init__.py file..." ?
When you do
import plugins.name1.n ame1
then "plugins" and "plugins/name1" should be a package, not a module. A
package is a special directory that contains package initialization code
in a __init__.py file. If you do not have the file, then the "plugins"
directory will be only a directory, and it cannot be imported.
For details, see:
http://docs.python.org/tut/node8.htm...00000000000000
Laszlo
Many thanks Laszlo, it looks like I got it to work ... result will be on www.snakecard.com/PY for those interested ... in the next few days
hg
Hi,
Using exec or eval ISN'T what should be done ever. When you have
troubles importing you should :
- Add some repository to your sys.path
and/or
- Use the buildin import method
and/or
- Use Mr Eby's Importing module ( http://python.org/pypi/Importing)
Regards,
Laurent
hg a écrit :
Hi,
I have the following problem.
I find in a directory hierarchy some files following a certain sets of
rules:
.../.../../plugin/name1/name1.py
....
.../.../../plugin/namen/namen.py
each file will in turn have a class with the same name as the filename
(minus .py)
I fetch those names in a list of string and want to import the files /
instantiate the classes.
I block at the beginning and tried this (test.py is a real file)
>>>s = 'test.py' eval ('import ' + s)
and get
Traceback (most recent call last):
File "<pyshell#1 >", line 1, in -toplevel-
eval ('import ' + s)
File "<string>", line 1
import test.py
Any clue ?
Thanks
hg This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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