numpy_to_GDAL_types.py

import json
import numpy as np
from osgeo import gdal, gdal_array

typemap = {}
typenames = {}
for name in dir(np):
    obj = getattr(np, name)
    if hasattr(obj, 'dtype'):
        try:
            npn = obj(0)
            nat = np.asscalar(npn)
            if gdal_array.NumericTypeCodeToGDALTypeCode(npn.dtype.type):
                typemap[npn.dtype.name] = gdal_array.NumericTypeCodeToGDALTypeCode(npn.dtype.type)
                typenames[npn.dtype.name] = gdal.GetDataTypeName(gdal_array.NumericTypeCodeToGDALTypeCode(npn.dtype.type))
        except:
            pass
print(json.dumps(typemap, indent=2))
print(json.dumps(typenames, indent=2))

# Output:
# {
#   "int32": 5, 
#   "int16": 3, 
#   "float64": 7, 
#   "complex128": 11, 
#   "uint8": 1, 
#   "uint16": 2, 
#   "complex64": 10, 
#   "uint32": 4, 
#   "int8": 1, 
#   "float32": 6
# }
# {
#   "int32": "Int32", 
#   "int16": "Int16", 
#   "float64": "Float64", 
#   "complex128": "CFloat64", 
#   "uint8": "Byte", 
#   "uint16": "UInt16", 
#   "complex64": "CFloat32", 
#   "uint32": "UInt32", 
#   "int8": "Byte", 
#   "float32": "Float32"
# }