CODEWITHSUNDEEP
pythonc++pybind11
Aleph
Aleph

Reputation: 1373

Printing in python a C++ class using pybind11

Let's say one has such a class

class Data
{
   public:
      Data(double d): value_(d) {};

   private:
      double value_;
 };

Is it possible to export it in Python with pybind11 such that 

d = Data(3.14)
print(d)

displays 3.14 instead of something like

Data object at 0x7fed8a8c3298

Upvotes: 2

Views: 1548

Answers (1)

0x5453
0x5453

Reputation: 13599

You can do something like this when you export:

class_<Data>("Data", module)
    .def("__repr__", [](const Data& d){ return std::to_string(d.getValue()); });

Notice I added that getValue method since value_ is private. Though depending on your interface, it might make more sense to add something like Data::toString() instead.

http://pybind11.readthedocs.io/en/stable/classes.html#binding-lambda-functions

Upvotes: 3

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