Error using arpack><module> (line 45)
Python Error: ImportError: DLL load failed: The specified procedure could not be found.

Error in __init__><module> (line 22)
from .arpack import *

Error in __init__><module> (line 11)
from .arpack import *

Error in __init__><module> (line 117)
from .eigen import *

Error in _minimize><module> (line 21)
from scipy.sparse.linalg import LinearOperator

Error in __init__><module> (line 271)
from ._minimize import *

Error in filter_design><module> (line 18)
from scipy import special, optimize, fftpack

Error in __init__><module> (line 321)
from .filter_design import *

Error in <frozen importlib>_call_with_frames_removed (line 219)

Error in <frozen importlib>exec_module (line 728)

Error in <frozen importlib>_load_unlocked (line 677)

Error in <frozen importlib>_find_and_load_unlocked (line 967)

Error in <frozen importlib>_find_and_load (line 983)

Error in <frozen importlib>_gcd_import (line 1006)

Error in __init__>import_module (line 127)
    return _bootstrap._gcd_import(name[level:], package, level)

py.importlib.import_module('scipy.signal')