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xgboost/python-package/xgboost/core.py  view on Meta::CPAN

    ----------
    data : list
        list of str
    """

    if isinstance(data, list):
        pointers = (ctypes.c_char_p * len(data))()
        if PY3:
            data = [bytes(d, 'utf-8') for d in data]
        else:
            data = [d.encode('utf-8') if isinstance(d, unicode) else d
                    for d in data]
        pointers[:] = data
        return pointers
    else:
        # copy from above when we actually use it
        raise NotImplementedError


def from_cstr_to_pystr(data, length):
    """Revert C pointer to Python str

xgboost/python-package/xgboost/core.py  view on Meta::CPAN

            try:
                res.append(str(data[i].decode('ascii')))
            except UnicodeDecodeError:
                res.append(str(data[i].decode('utf-8')))
    else:
        res = []
        for i in range(length.value):
            try:
                res.append(str(data[i].decode('ascii')))
            except UnicodeDecodeError:
                res.append(unicode(data[i].decode('utf-8')))
    return res


def _load_lib():
    """Load xgboost Library."""
    lib_path = find_lib_path()
    if len(lib_path) == 0:
        return None
    lib = ctypes.cdll.LoadLibrary(lib_path[0])
    lib.XGBGetLastError.restype = ctypes.c_char_p