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1 function [result status] = python(varargin)
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2 %python Execute python command and return the result.
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3 % python(pythonFILE) calls python script specified by the file pythonFILE
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4 % using appropriate python executable.
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5 %
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6 % python(pythonFILE,ARG1,ARG2,...) passes the arguments ARG1,ARG2,...
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7 % to the python script file pythonFILE, and calls it by using appropriate
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8 % python executable.
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9 %
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10 % RESULT=python(...) outputs the result of attempted python call. If the
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11 % exit status of python is not zero, an error will be returned.
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12 %
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13 % [RESULT,STATUS] = python(...) outputs the result of the python call, and
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14 % also saves its exit status into variable STATUS.
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15 %
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16 % See also SYSTEM, JAVA, MEX.
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17
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18 % Copyright 1990-2007 The MathWorks, Inc.
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19 % $Revision: 1.1.4.8 $
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20
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21 cmdString = '';
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22
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23 % Add input to arguments to operating system command to be executed.
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24 % (If an argument refers to a file on the MATLAB path, use full file path.)
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25 for i = 1:nargin
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26 thisArg = varargin{i};
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27 if isempty(thisArg) || ~ischar(thisArg)
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28 error('MATLAB:perl:InputsMustBeStrings', 'All input arguments must be valid strings.');
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29 end
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30 if i==1
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31 if exist(thisArg, 'file')==2
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32 % This is a valid file on the MATLAB path
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33 if isempty(dir(thisArg))
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34 % Not complete file specification
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35 % - file is not in current directory
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36 % - OR filename specified without extension
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37 % ==> get full file path
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38 thisArg = which(thisArg);
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39 end
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40 else
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41 % First input argument is pythonFile - it must be a valid file
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42 error('MATLAB:perl:FileNotFound', 'Unable to find python file: %s', thisArg);
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43 end
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44 end
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45
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46 % Wrap thisArg in double quotes if it contains spaces
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47 if any(thisArg == ' ')
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48 thisArg = ['"', thisArg, '"'];
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49 end
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50
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51 % Add argument to command string
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52 cmdString = [cmdString, ' ', thisArg];
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53 end
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54
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55 % Execute python script
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56 errTxtNoPerl = 'Unable to find python executable.';
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57
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58 if isempty(cmdString)
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59 error('MATLAB:perl:NoPerlCommand', 'No python command specified');
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60 elseif ispc
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61 % PC
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62 perlCmd = []; % fullfile('C:\Program Files (x86)\Python3x');
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63 cmdString = ['python' cmdString];
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64 perlCmd = ['set PATH=',perlCmd, ';%PATH%&' cmdString];
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65 [status, result] = dos(perlCmd);
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66 else
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67 [status ignore] = unix('which python'); %#ok
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68 if (status == 0)
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69 cmdString = ['python', cmdString];
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70 [status, result] = unix(cmdString);
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71 else
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72 error('MATLAB:python:NoExecutable', errTxtNoPython);
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73 end
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74 end
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75
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76 % Check for errors in shell command
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77 if nargout < 2 && status~=0
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78 error('MATLAB:perl:ExecutionError', ...
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79 'System error: %sCommand executed: %s', result, cmdString);
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80 end
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81
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