def to_array(obj, type = None, primitive = True):
    """Convert Python list to Java array.

    Args:
        obj(list): Original data.
        type(str): array type 'b' = byte, 'h' = short, 'i' = int, 'l' = long,  'f' = float, 'd' = double,
                              'c' = char, 'z' = boolean, 's' = String,  'o' = Object
    Returns:
        Java array.
    """
    if obj is None:
        return None
    if type is None:
        type = 'o'
        enforceArrayType=False
    else:
        enforceArrayType=True
    if type[0] == '[':
        type = type[1:]        
    element_type = ScriptUtils.getPrimitiveType(type) if primitive else ScriptUtils.getType(type)

    def convert_1d_array(obj):
        if type == 'c':
            ret = reflect.Array.newInstance(element_type,len(obj))
            for i in range(len(obj)): ret[i] = chr(obj[i])
            return ret
        if type == 'z':
            ret = reflect.Array.newInstance(element_type,len(obj))
            for i in range(len(obj)):
                ret[i]= True if obj[i] else False
            return ret
        if type == 'o':
            ret = reflect.Array.newInstance(element_type,len(obj))
            for i in range(len(obj)):
                ret[i]= obj[i] 
            return ret
        if type == "s":
            return Convert.toStringArray(obj)   
        if primitive:   
            ret = Convert.wrapperArrayToPrimitiveArray(obj, element_type)  
        else:
            ret = reflect.Array.newInstance(element_type,len(obj))
            for i in range(len(obj)): ret[i] = Convert.toType(obj[i],element_type)
        return ret
                
    if is_array(obj):
        if enforceArrayType:
            if Arr.getComponentType(obj) != element_type:
                rank = Arr.getRank(obj)
                if (rank== 1):
                    obj=convert_1d_array(obj)
                elif (rank>1):  
                    pars, aux = [element_type], obj
                    for i  in range(rank):
                        pars.append(len(aux))
                        aux = aux[0]
                    #TODO: OVERLOADING BUG
                    #ret = reflect.Array.newInstance(*pars)    
                    ret = Arr.newInstance(*pars) 
                    for i in range(len(obj)):
                        ret[i]=to_array(obj[i], type)                        
                    obj = ret
    elif is_list(obj):        
        if type=='o':
            ret = reflect.Array.newInstance(element_type, len(obj))
            for i in range (len(obj)):
                if is_list(obj[i]) or is_array(obj[i]):
                    ret[i] = to_array(obj[i],type)
                else:
                    ret[i] = obj[i]
            obj=ret
        elif len(obj)>0 and (is_list(obj[0]) or is_array(obj[0])):
            pars, aux = [element_type], obj
            while len(aux)>0 and (is_list(aux[0]) or is_array(aux[0])):
                pars.append(len(aux))
                aux = aux[0]
            pars.append(0)
            #ret = reflect.Array.newInstance(*pars)
            ret = Arr.newInstance(*pars) 
            for i in range(len(obj)):
                ret[i]=to_array(obj[i], type)
            obj=ret
        else:
         obj= convert_1d_array(obj)
    return obj


import random
ret = []
for i in range (10):
    ret.append(random.random())

try:
    a1 = to_array(ret,'d')
    print (a1)
except:
        traceback.print_exc()