Array.CreateInstance(<type>, System.Int32[]) results in 'TypeError: No method matches given arguments' in v2.5.0 #1187
Description
Environment
- Pythonnet version: 2.5.0
- Python version: 3.6.9
- Operating System: Windows 10
Details
- Describe what you were trying to get done.
Array.CreateInstance for multi-dimensional arrays worked fine in v2.4.0. After upgrading to v2.5.0+, an error message gets thrown.
- What commands did you run to trigger this issue?
import numpy as np
import ctypes
import clr, System
from System import Array, Int32
from System.Runtime.InteropServices import GCHandle, GCHandleType
import sys
import os
_MAP_NP_NET = {
np.dtype('float32'): System.Single,
np.dtype('float64'): System.Double,
np.dtype('int8') : System.SByte,
np.dtype('int16') : System.Int16,
np.dtype('int32') : System.Int32,
np.dtype('int64') : System.Int64,
np.dtype('uint8') : System.Byte,
np.dtype('uint16') : System.UInt16,
np.dtype('uint32') : System.UInt32,
np.dtype('uint64') : System.UInt64,
np.dtype('bool') : System.Boolean,
}
def asNetArray(npArray):
dims = npArray.shape
dtype = npArray.dtype
netDims = Array.CreateInstance(Int32, npArray.ndim)
for I in range(npArray.ndim):
netDims[I] = int(dims[I])
if not npArray.flags.c_contiguous:
npArray = npArray.copy(order='C')
assert npArray.flags.c_contiguous
try:
netArray = Array.CreateInstance(_MAP_NP_NET[dtype], netDims)
except KeyError:
raise NotImplementedError("asNetArray does not yet support dtype {}".format(dtype))
try: # Memmove
destHandle = GCHandle.Alloc(netArray, GCHandleType.Pinned)
sourcePtr = npArray.__array_interface__['data'][0]
destPtr = destHandle.AddrOfPinnedObject().ToInt64()
ctypes.memmove(destPtr, sourcePtr, npArray.nbytes)
finally:
if destHandle.IsAllocated: destHandle.Free()
return netArray
if __name__ == '__main__':
foo = np.full([1024,1024], 2.5, dtype=np.int32)
netFoo = asNetArray( foo )- If there was a crash, please include the traceback here.
Traceback (most recent call last):
File "pythonnetUtils.py", line 53, in <module>
netFoo = asNetArray( foo )
File "pythonnetUtils.py", line 37, in asNetArray
netArray = Array.CreateInstance(_MAP_NP_NET[dtype], netDims)
TypeError: No method matches given arguments for CreateInstance: (<class 'CLR.CLR Metatype'>, <class 'System.Int32[]'>)