Hi, I'm getting a strange mu.arange TypeError when running a script, but not when I turn on pdb in ipython and try to re-execute the same line that throws the error. As you can see from the stack trace, I'm using VisionEgg-1.1.2 (though I also had to apply the patch from changest 1533 for PyOpenGL3) [ I've actually also just tried it using SVN head and get the same stack trace ] numpy.__version__ is 1.2.1 /home/pi/code/Dimstim/Bars.pyc in bars(preexpSec, postexpSec, orioff, ori, speedDegSec, xposDeg, yposDeg, widthDeg, heightDeg, brightness, antialiase, bgbrightness, sweeptimeSec, postsweepSec, varlist, nruns, shuffleRuns, blankSweep, shuffleBlankSweeps) 187 # Init vars for main loop 188 nvsyncsdisplayed = 0 # 1 based, init as 0 --> 189 vsynctimer = VsyncTimer() 190 for var in sweeptable: # init local copies of vars in sweeptable to their vals at first sweep in sweeplist 191 exec(var + '= sweeptable[\'' + var + '\'][sweeplist[0]]') # ie set var = sweeptable[var][sweeplist[0]], e.g. ori=sweeptable['ori'][sweeplist[0]] /usr/local/lib/python2.6/dist-packages/visionegg-1.1.2-py2.6-linux-i686.egg/VisionEgg/Core.py in __init__(self, bin_start_msec, bin_stop_msec, bin_width_msec, running_average_num_frames, save_all_frametimes) 1519 def __init__(self, bin_start_msec=2, bin_stop_msec=28, bin_width_msec=2, running_average_num_frames=0,save_all_frametimes=False): 1520 """Create instance of FrameTimer.""" -> 1521 self.bins = Numeric.arange( bin_start_msec, bin_stop_msec, bin_width_msec ) 1522 self.bin_width_msec = float(bin_width_msec) 1523 self.timing_histogram = Numeric.zeros( self.bins.shape, Numeric.Float ) # make float to avoid (early) overflow errors /usr/lib/python2.6/dist-packages/numpy/oldnumeric/functions.pyc in arange(start, stop, step, typecode, dtype) 99 def arange(start, stop=None, step=1, typecode=None, dtype=None): 100 dtype = convtypecode2(typecode, dtype) --> 101 return mu.arange(start, stop, step, dtype) 102 103 def fromstring(string, typecode='l', count=-1, dtype=None): TypeError: function takes exactly 2 arguments (1 given) WARNING: Failure executing file: <bars.py> In [2]: debug > /usr/lib/python2.6/dist-packages/numpy/oldnumeric/functions.py(101)arange() 100 dtype = convtypecode2(typecode, dtype) --> 101 return mu.arange(start, stop, step, dtype) 102 ipdb> mu.arange(start, stop, step, dtype) array([ 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26]) I appreciate the help, Paul ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html