title: scipy splprep suppress warnings not caught by "quiet"
body: <p>Does anyone know if it is possible to suppress the following fitpack warning that is thrown up by python's scipy.interpolate.splprep? </p>
  
  <p>The warning is not a problem in terms of my code and output - but it does pollute my stderr / stdout output - heavily in my case. </p>
  
  <p>Setting quite=1 in splprep does not suppress this output. 
  scipy version 0.11.0</p>
  
  <p>3:["""\
      The maximal number of iterations (20) allowed for finding smoothing
      spline with fp=s has been reached. Probably causes: s too small.
      (abs(fp-s)/s>0.001)""",ValueError]</p>
  
  <p>Thanks for the help. </p>