[C++-sig] How to converter std::string* in boost.python?

[simon zhang]

..so,It seems I can only convert std::string and make a deep copy.I can
only avoid it as much as possible.Thank you.


2012/12/22 Jim Bosch <talljimbo at gmail.com>

> On 12/21/2012 03:52 AM, simon zhang wrote:
>
>> How to converter std::string* in boost.python?I have to handle some data
>> of c++ in python.The data may be big.So I return a pointer to python.
>> But there are some errors.
>>
>>
> If the data is big, and you really want to avoid a deep copy, the only way
> to use it is if you manually allocate the memory as a Python str object
> using the Python C API or return it as something else (like a NumPy array
> or buffer object, or a custom Boost.Python-wrapped class) that can hold
> C++-allocated memory.  A Python str object always owns its own memory, and
> so does std::string, so you can't convert from one to the other without a
> deep copy.
>
> Jim
>
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