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30

[Jython-bugs] [ jython-Bugs-573784 ] popen does not work

From: <noreply@so...> - 2002-06-25 19:44

Bugs item #573784, was opened at 2002-06-25 12:44
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573784&group_id=12867

Category: Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: popen does not work

Initial Comment:
os.popen, os.popen2, os.popen3, os.popen4 do not work.  
Error response is:  
   
Traceback (innermost last):  
  File "uniquefile-popen.py", line 20, in ?  
AttributeError: class 'org.python.modules.os' has no  
attribute 'popen'  
  
importing popen and using popen.popen[234] results in  
pipe being undefindedd in modules.os  
  
Running under Linux - Mandrake 8.2 using  
j2sdk1.3.1-02b-FCS (blackdown) with jython 2.1 
  
  

----------------------------------------------------------------------

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[Jython-bugs] [ jython-Bugs-573784 ] popen does not work

From: <noreply@so...> - 2002-06-29 23:50

Bugs item #573784, was opened at 2002-06-25 13:44
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573784&group_id=12867

Category: Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: popen does not work

Initial Comment:
os.popen, os.popen2, os.popen3, os.popen4 do not work.  
Error response is:  
   
Traceback (innermost last):  
  File "uniquefile-popen.py", line 20, in ?  
AttributeError: class 'org.python.modules.os' has no  
attribute 'popen'  
  
importing popen and using popen.popen[234] results in  
pipe being undefindedd in modules.os  
  
Running under Linux - Mandrake 8.2 using  
j2sdk1.3.1-02b-FCS (blackdown) with jython 2.1 
  
  

----------------------------------------------------------------------

Comment By: Scott Langley (langles)
Date: 2002-06-29 17:50

Message:
Logged In: YES 
user_id=375426

I was wondering the same thing, until I found this:

http://www.jython.org/cgi-bin/faqw.py?req=show&file=faq03.009.htp

"""
Jython FAQ Entry
3.9. The Jython's os module is missing some functions, why?

 Python's and Jython's os modules differ necessarily because
of differences Java imposes on natvie system access. For
example, Java does not have a chdir equivalent, so it does
not exist in Jython's os.

There is an alternative os module that does provide
additional functionality, and it is the jnios module found at:

http://sourceforge.net/projects/jnios

The jnios module replaces the default os module with a
Java/JNI implementation of Python's os and posix modules.
"""

I have no idea whether you can get jnios to work with a
modern jython 2.1, however.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573784&group_id=12867

[Jython-bugs] [ jython-Bugs-573784 ] popen does not work

From: <noreply@so...> - 2002-06-29 23:52

Bugs item #573784, was opened at 2002-06-25 13:44
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573784&group_id=12867

Category: Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: popen does not work

Initial Comment:
os.popen, os.popen2, os.popen3, os.popen4 do not work.  
Error response is:  
   
Traceback (innermost last):  
  File "uniquefile-popen.py", line 20, in ?  
AttributeError: class 'org.python.modules.os' has no  
attribute 'popen'  
  
importing popen and using popen.popen[234] results in  
pipe being undefindedd in modules.os  
  
Running under Linux - Mandrake 8.2 using  
j2sdk1.3.1-02b-FCS (blackdown) with jython 2.1 
  
  

----------------------------------------------------------------------

Comment By: Scott Langley (langles)
Date: 2002-06-29 17:52

Message:
Logged In: YES 
user_id=375426

I was wondering the same thing, until I found this:

http://www.jython.org/cgi-bin/faqw.py?req=show&file=faq03.009.htp

"""
Jython FAQ Entry
3.9. The Jython's os module is missing some functions, why?

 Python's and Jython's os modules differ necessarily because
of differences Java imposes on natvie system access. For
example, Java does not have a chdir equivalent, so it does
not exist in Jython's os.

There is an alternative os module that does provide
additional functionality, and it is the jnios module found at:

http://sourceforge.net/projects/jnios

The jnios module replaces the default os module with a
Java/JNI implementation of Python's os and posix modules.
"""

I have no idea whether you can get jnios to work with a
modern jython 2.1, however.

----------------------------------------------------------------------

Comment By: Scott Langley (langles)
Date: 2002-06-29 17:50

Message:
Logged In: YES 
user_id=375426

I was wondering the same thing, until I found this:

http://www.jython.org/cgi-bin/faqw.py?req=show&file=faq03.009.htp

"""
Jython FAQ Entry
3.9. The Jython's os module is missing some functions, why?

 Python's and Jython's os modules differ necessarily because
of differences Java imposes on natvie system access. For
example, Java does not have a chdir equivalent, so it does
not exist in Jython's os.

There is an alternative os module that does provide
additional functionality, and it is the jnios module found at:

http://sourceforge.net/projects/jnios

The jnios module replaces the default os module with a
Java/JNI implementation of Python's os and posix modules.
"""

I have no idea whether you can get jnios to work with a
modern jython 2.1, however.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573784&group_id=12867

[Jython-bugs] [ jython-Bugs-575110 ] Multiple for's on Collection broken

From: <noreply@so...> - 2002-06-28 16:52

Bugs item #575110, was opened at 2002-06-28 09:52
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=575110&group_id=12867

Category: Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Multiple for's on Collection broken

Initial Comment:
If multiple for loops are used on a java.util.Collection that 
is not also a java.util.List the second loop will cause a 
value error.

###############
from java.util import HashSet

hs = HashSet()

hs.add(1)

for x in hs:
    print x

for y in hs:
    print y
###############

the error is:
1
Traceback (innermost last):
  File "test/com/cnnxn/audit/jython/BinForEach.py", line 
10, in ?
ValueError: iterator indices must be consecutive ints 
starting at 0


my email: gyork@...



----------------------------------------------------------------------

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[Jython-bugs] [ jython-Bugs-574546 ] CodeCompiler.visitAugAssign : bad visit

From: <noreply@so...> - 2002-06-27 12:18

Bugs item #574546, was opened at 2002-06-27 14:18
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=574546&group_id=12867

Category: Jythonc compiler
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Bram Bouwens (bbouwens)
Assigned to: Nobody/Anonymous (nobody)
Summary: CodeCompiler.visitAugAssign : bad visit

Initial Comment:
In my application there is a line like

  item.attribute += "value"

which doesn't work. The attribute is looked up with
the __getattr__ method as item is a wrapper around a
Java object.

So this is effectively equivalent to

  item.__getattr__("attribute").__iadd__("value")

When I replace the above line with

  item.attribute.__iadd__("value")

it works fine. I noticed that the original version causes
a call to

  item.__setattr__(None)

(or something else instead of None) which is not to be
expected.
The problem went away when I commented out line 1293
of org/python/compiler/CodeCompiler.java  rev. 2.28.
That line must be useless (so by definition incorrect)
as the augbinop already does the store itself.

----------------------------------------------------------------------

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[Jython-bugs] [ jython-Bugs-573791 ] os.system partly broken

From: <noreply@so...> - 2002-06-25 19:52

Bugs item #573791, was opened at 2002-06-25 12:52
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=112867&aid=573791&group_id=12867

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: os.system partly  broken

Initial Comment:
executing a external command can hang jython interpretor  
when using os.system  
  
eg. os.system("more file1") causes a hang under jython but  
works under native python.  
  
eg. os system("cat file1") works under both.  
  
Addditionally, output can vary slightly, eg:  
  
file 1 contains: 
 
test text 
 
 
python code:  
  
result = os.system("cat file1")  
print "=-=-=-="  
print result  
  
produces under python 
 
test text 
=-=-=-= 
0 
 
under jython:  
  
test text=-=-=-= 
0 
  
   
Running under Linux - Mandrake 8.2 using    
j2sdk1.3.1-02b-FCS (blackdown) with jython 2.1   

----------------------------------------------------------------------

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[Jython-bugs] [ jython-Bugs-572769 ] Blank input lines break readline console

From: <noreply@so...> - 2002-06-23 14:56

Bugs item #572769, was opened at 2002-06-24 00:56
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112867&aid=572769&group_id=12867

Category: Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Ben Burton (bab)
Assigned to: Nobody/Anonymous (nobody)
Summary: Blank input lines break readline console

Initial Comment:

Hi.  If you're using a readline console and you enter
a blank line (such as when you end an indented block
in a for loop, etc), ReadlineConsole returns a null input
string and jython breaks with an error.

This all seems to happen because the java-readline wrappers
return null if an empty string was input.

A patch that fixes this problem is shown below.  The bug
was originally reported as #145613 in the Debian BTS
(http://bugs.debian.org/145613).

Thanks - Ben.

--- jython-2.1.0.orig/org/python/util/ReadlineConsole.java
+++ jython-2.1.0/org/python/util/ReadlineConsole.java
@@ -39,7 +39,8 @@
      **/
     public String raw_input(PyObject prompt) {
         try {
-           return Readline.readline(prompt==null ? "" : prompt.toString());
+           String line = Readline.readline(prompt==null ? "" : prompt.toString());
+           return (line == null ? "" : line);
         } catch (java.io.EOFException eofe) {
            throw new PyException(Py.EOFError);
         } catch (java.io.IOException e) {


----------------------------------------------------------------------

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[Jython-bugs] [ jython-Bugs-567844 ] list() does not make a shallow copy

From: <noreply@so...> - 2002-06-12 05:20

Bugs item #567844, was opened at 2002-06-11 22:20
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112867&aid=567844&group_id=12867

Category: Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: list() does not make a shallow copy

Initial Comment:
Guido's book says list(x) makes a shallow copy if x is 
already a list.  But I observe this behavior:

Jython 2.1a3 on java1.3.0 (JIT: null)
Type "copyright", "credits" or "license" for more 
information.
>>> a=[1,2,3]
>>> b=list(a)
>>> a[1]=5
>>> a
[1, 5, 3]
>>> b
[1, 5, 3]
>>>

Sorry if I've misunderstood something or if this has 
already been fixed.

-Greg


----------------------------------------------------------------------

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