Trouble executing pyc files in ubuntu server

[RawMustard]

Hi Folks, my first post here. Sorry to start with a request.

I'm having trouble executing python scripts compiled to byte code on ubuntu feisty server version. Basically I can type ./MyScript.py and the script runs fine but if I compile the script and type ./MyScript.pyc it won't run, I just get some junk characters printed to my terminal that mean nothing.

Now if I type python MyScript.pyc it runs fine. I guess it's a path thing, but I'm not too sure how to solve it.

Silly thing is, on my feisty workstation all works as expected.

Anyone have any ideas how I might fix this problem.

[varuns]

Hi Folks, my first post here. Sorry to start with a request.

I'm having trouble executing python scripts compiled to byte code on ubuntu feisty server version. Basically I can type ./MyScript.py and the script runs fine but if I compile the script and type ./MyScript.pyc it won't run, I just get some junk characters printed to my terminal that mean nothing.

Now if I type python MyScript.pyc it runs fine. I guess it's a path thing, but I'm not too sure how to solve it.

Silly thing is, on my feisty workstation all works as expected.

Anyone have any ideas how I might fix this problem.

hi
try changing permission of the .pyc file using

sudo chmod +x MyScript.pyc

and also first line of the script should be
!#/usr/bin/env python

[RawMustard]

hi
try changing permission of the .pyc file using

sudo chmod +x MyScript.pyc

and also first line of the script should be
!#/usr/bin/env python

Hey thanks for the reply.

Yeah I've done all that, the file executes but not correctly for some reason :(
This is stupid, it works perfectly on 3 other machines but not this one. Fresh install and all :( I even tried compiling on another machine where it works and copying it over but still no go :(

[varuns]

Hey thanks for the reply.

Yeah I've done all that, the file executes but not correctly for some reason :(
This is stupid, it works perfectly on 3 other machines but not this one. Fresh install and all :( I even tried compiling on another machine where it works and copying it over but still no go :(

how r u compiling your script. May be there lies a problem?
I tried this compile.py script

!#/usr/bin/env python
import py_compile
py_compile.compile("MyScript.py")

and than changed the permission and it worked

[RawMustard]

how r u compiling your script. May be there lies a problem?
I tried this compile.py script

!#/usr/bin/env python
import py_compile
py_compile.compile("MyScript.py")

and than changed the permission and it worked

Yeah that how I did it, just from a console though I didn't write a script to do it.

I do $ python
>>> import py_compile
>>> py_compile.compile('libhmi_sys.py')

Then I chmod +x libhmi_sys.pyc

then I try and run it with ./libhmi_sys.pyc

and get:

root@tilsan1-hmi:/opt/tilsan/hmi# ./libhmi_sys.pyc
: command not foundine 1: 
./libhmi_sys.pyc: line 2: {+Fc: command not found
./libhmi_sys.pyc: line 3: dZ
                            Z
                             d: command not found
./libhmi_sys.pyc: line 4: syntax error near unexpected token `('
./libhmi_sys.pyc: line 4: `Zd
                              jo;eiie   Zedjoeie       nend
djo1eideendjp eideiie       Zedjoeie       neiie        joeid
                                                      Zeidedjo4djo
ndjo                                                               e
     eqqedjoreideide
                        dZeiie
                               ZedjoAedjo4djo
ndjo                                         e
     eqqedjowedjojeide
                         eide  eideiie       Zedjoeie       neqedjoYeideideiie Zedjoeie       neqqnedS(iNt:iis/opt/tilsan/hmi/tmp/extInput.jss/opt/tilsan/hmi/hmi_db/s /media/TILSAN-USB/4roller-backups     /dev/sdb1cCs
                                                                            tidttidtidttidtittidtdtidtidttd      tidtid'
^[[?1;2c^[[?1;2croot@tilsan1-hmi:/opt/tilsan/hmi# 1;2c1;2c
bash: 1: command not found
bash: 2c1: command not found
bash: 2c: command not found
 

Does that mean anything to you's guys?

Like I said, on my workstation doing the exact same routine it all works fine :(

[varuns]

Yeah that how I did it, just from a console though I didn't write a script to do it.

I do $ python
>>> import py_compile
>>> py_compile.compile('libhmi_sys.py')

Then I chmod +x libhmi_sys.pyc

then I try and run it with ./libhmi_sys.pyc

and get:

root@tilsan1-hmi:/opt/tilsan/hmi# ./libhmi_sys.pyc
: command not foundine 1: 
./libhmi_sys.pyc: line 2: {+Fc: command not found
./libhmi_sys.pyc: line 3: dZ
                            Z
                             d: command not found
./libhmi_sys.pyc: line 4: syntax error near unexpected token `('
./libhmi_sys.pyc: line 4: `Zd
                              jo;eiie   Zedjoeie       nend
djo1eideendjp eideiie       Zedjoeie       neiie        joeid
                                                      Zeidedjo4djo
ndjo                                                               e
     eqqedjoreideide
                        dZeiie
                               ZedjoAedjo4djo
ndjo                                         e
     eqqedjowedjojeide
                         eide  eideiie       Zedjoeie       neqedjoYeideideiie Zedjoeie       neqqnedS(iNt:iis/opt/tilsan/hmi/tmp/extInput.jss/opt/tilsan/hmi/hmi_db/s /media/TILSAN-USB/4roller-backups     /dev/sdb1cCs
                                                                            tidttidtidttidtittidtdtidtidttd      tidtid'
^[[?1;2c^[[?1;2croot@tilsan1-hmi:/opt/tilsan/hmi# 1;2c1;2c
bash: 1: command not found
bash: 2c1: command not found
bash: 2c: command not found
 

Does that mean anything to you's guys?

Like I said, on my workstation doing the exact same routine it all works fine :(

this is really weired, i have no idea about this, may be someone will post a solution or you can post the solution before anyone does.

[RawMustard]

Yep seems no one know what's going on. I suspect ubuntu server version of python is borked. It works on any of their other releases, live cd, desktop xubuntu, just doesn't work on their server version.

It's actually not compiling the scripts properly for some reason, because if I compile a script on the server and move the pyc file to my workstation it won't run, yet compiling the same script on my workstation works fine on my workstation but won't run on the server.

[foo123]

This is because you need to install the binfmt-support package - from the package description, it "allows system administrators to register interpreters for
various binary formats based on a magic number or their file extension, and
cause the appropriate interpreter to be invoked whenever a matching file is
executed".

I had this python problem too, and this fixed it for me :-)