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some table py-features

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This commit is contained in:
Joachim Schoeberl 2021-06-01 12:57:58 +02:00
parent 7c4f1cf53a
commit 6dcc89ad04
1 changed files with 35 additions and 1 deletions
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36
libsrc/core/python_ngcore.hpp
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@ -261,7 +261,41 @@ namespace ngcore
template <typename T>
void ExportTable (py::module &m)
{
py::class_<ngcore::Table<T>, std::shared_ptr<ngcore::Table<T>>> (m, ("Table+"+GetPyName<T>()).c_str())
py::class_<ngcore::Table<T>, std::shared_ptr<ngcore::Table<T>>> (m, ("Table_"+GetPyName<T>()).c_str())
.def(py::init([] (py::list blocks)
{
size_t size = py::len(blocks);
Array<int> cnt(size);
size_t i = 0;
for (auto block : blocks)
cnt[i++] = py::len(block);
i = 0;
Table<T> blocktable(cnt);
for (auto block : blocks)
{
auto row = blocktable[i++];
size_t j = 0;
for (auto val : block)
row[j++] = val.cast<T>();
}
// cout << "blocktable = " << *blocktable << endl;
return blocktable;
}), py::arg("blocks"), "a list of lists")
.def ("__len__", [] (Table<T> &self ) { return self.Size(); } )
.def ("__getitem__",
[](Table<T> & self, size_t i) -> FlatArray<T>
{
if (i >= self.Size())
throw py::index_error();
return self[i];
})
.def("__str__", [](Table<T> & self)
{
return ToString(self);
})
;
}