# ultraflatten.py

# ultraflatten.py

grid=[0, [1, 2], [3, 4, (5, 6,),(7, {8, 9})], 'abc']
def onedee(array):
    result=[]
    def scan(array):
        for i in array:
            if isinstance(i, (int, str)):
                result.append(i)
            else: scan(i)
    scan(array)
    return result
print onedee(grid)