Re: [ESPResSo-users] Python Interface

[Rohit Goswami]

Additionally, on trying to get the included python example from the github 
repository,

 ./pypresso samples/python/lj_liquid.py                  espresso/git/master !
Traceback (most recent call last):
  File "samples/python/lj_liquid.py", line 20, in <module>
    import espressomd._system as es
  File "/home/haozeke/Github/LabBom/espresso/espressomd/__init__.py", line 27, 
in <module>
    import espressomd._init
ImportError: dynamic module does not define init function (init_init)


Sorry if these mails are too frequent.

Additionally, does the python interface work with mbtools?


03.06.2015, 03:38, "Rohit Goswami" <address@hidden>:
> Okay, sorry for the python misunderstanding,
> So now there's yet another problem, on sucessfully installing and importing 
> espresso;
> thermostat seems undefined, (trying to run the example code at 
> http://espressomd.org/wiki/Python_Interface )
>
> Python 2.7.10 (default, May 26 2015, 04:16:29)
> [GCC 5.1.0] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>>  import espresso
>>>>  import numpy
>>>>  system = espresso.System()
>>>>  system.time_step = 0.01
>>>>  system.skin = 0.4
>>>>  system.box_l = [10,10,10]
>>>>  espresso.thermostat.Thermostat().setLangevin(1.0,1.0)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'module' object has no attribute 'thermostat'
>>>>  espressomd.thermostat.Thermostat().setLangevin(1.0,1.0)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> NameError: name 'espressomd' is not defined
>
> 02.06.2015, 23:00, "address@hidden" <address@hidden>:
>>  Hey, thanks for the idea, but unfortunately in my case it builds from both  
>> but gives the same error as before.
>>  In case it's relevant I'm not building with the default myconfig. I've 
>> attached mine.
>>
>>  02.06.2015, 22:36, "Kai Szuttor" <address@hidden>:
>>>   I just pulled from the master on git and checked compilation. I had a
>>>   problem building the current master and found a missing
>>>   field in a struct defined in the python interface, so i was not able to
>>>   build. In my current master this bug is fixed and im able to build.
>>>   Maybe your build was erroneous. So just clone from my repo and try:
>>>   https://github.com/KaiSzuttor/espresso.git
>>>
>>>   Cheers
>>>
>>>   Kai Szuttor
>>>
>>>   On 06/02/2015 02:53 PM, address@hidden wrote:
>>>>    The details are attached. I'm running an ArchLinux 64-bit system with 
>>>> espresso compiled from the git source. With ./configure --with-python
>>>>    The program compiles correctly however, on running ./pypresso and 
>>>> trying to import espressomd;
>>>>
>>>>    Python 3.4.3 (default, Mar 25 2015, 17:13:50)
>>>>    [GCC 4.9.2 20150304 (prerelease)] on linux
>>>>    Type "help", "copyright", "credits" or "license" for more information.
>>>>>>>    import espressomd
>>>>    Traceback (most recent call last):
>>>>      File "<stdin>", line 1, in <module>
>>>>      File "/home/haozeke/Github/LabBom/espresso/espressomd/__init__.py", 
>>>> line 32, in <module>
>>>>        tcl = espressomd._tcl.TclInterpreter()
>>>>      File "espressomd/_tcl.pyx", line 37, in 
>>>> espressomd._tcl.TclInterpreter.__init__ (_tcl.cpp:654)
>>>>        self.eval('global argv; set argv ""')
>>>>      File "espressomd/_tcl.pyx", line 43, in 
>>>> espressomd._tcl.TclInterpreter.eval (_tcl.cpp:745)
>>>>        result = Tcl_Eval(self.interp, string)
>>>>    TypeError: expected bytes, str found
>>>>
>>>>    Any help would be greatly appreciated.