BUG: return the proper error strings
BUG: return the proper error strings

kwohlfahrt/pywt,eriol/pywt,eriol/pywt,aaren/pywt,eriol/pywt,kwohlfahrt/pywt,grlee77/pywt,rgommers/pywt,michelp/pywt,PyWavelets/pywt,michelp/pywt,rgommers/pywt,grlee77/pywt,aaren/pywt,michelp/pywt,aaren/pywt,kwohlfahrt/pywt,rgommers/pywt,rgommers/pywt,PyWavelets/pywt