我有一个名为“ data.json”的json文件，我想将其转换为csv文件。 这是json文件的一部分：
{"1-DSCN9107-25082017.JPG131909":{"filename":"1-DSCN9107-25082017.JPG","size":131909,"regions":[{"shape_attributes":{"name":"polyline","all_points_x":[257,351,350,617,638,191,22,103,147],"all_points_y":[7,117,230,288,477,472,200,23,-1]},"region_attributes":{"car damaged parts":"parachoc"}}],"file_attributes":{}},
“ 1-DSCN9108-25082017.JPG132452”：{“文件名”：“ 1-DSCN9108-25082017.JPG”，“大小”：132452，“区域”：[{“ shape_attributes”：{“名称”：“折线“，” all_points_x“：[322,332,324,309,254,107,12,190,315,439,548,594,553,501,396,318]，” all_points_y“：[83,100,152,175,189,168,254,442,477,472,340,220,98,2,0,85]}”“”“” “：{}}，
“ 1-IMG_2854-16102017.jpg117738”：{“文件名”：“ 1-IMG_2854-16102017.jpg”，“大小”：117738，“区域”：[{“ shape_attributes”：{“名称”：“多边形“，” all_points_x“：[862,505,569,819,874,892]，” all_points_y“：[390,504,670,678,497,407]}，” region_attributes“：{”汽车损坏零件“：” parachoc“}}]]，” file_attributes“：{}}，
“ 1-IMG_2855-16102017.jpg122454”：{“文件名”：“ 1-IMG_2855-16102017.jpg”，“大小”：122454，“区域”：[null，null，{“ shape_attributes”：{“ name“：” polygon“，” all_points_x“：[783,843,440,377,445]，” all_points_y“：[371,232,260,358,382]}，” region_attributes“：{” car受损零件“：” parachoc“}}}，{” shape_attributes“：{” name“ ：“ rect”，“ x”：335，“ y”：424，“宽度”：419，“高度”：185}，“ region_attributes”：{“汽车损坏的零件”：“ parachoc”}}]]，“ file_attributes “：{}}，
“ 1-IMG_2857-16102017.jpg133485”：{“文件名”：“ 1-IMG_2857-16102017.jpg”，“大小”：133485，“区域”：[{“ shape_attributes”：{“名称”：“多边形“，” all_points_x“：[1001,1017,582,487,678,1021,1019]，” all_points_y“：[5,10,156,374,431,346,12]}，” region_attributes“：{”汽车损坏部件“：” phare gauche“}} {“ shape_attributes”：{“ name”：“ polygon”，“ all_points_x”：[1019,79,116,1020]，“ all_points_y”：[356,519,757,765]}，“ region_attributes”：{“汽车损坏的零件”：“ parachoc”} }]，“ file_attributes”：{}}，
我只想提取csv文件中两个单独列中的两个字段filename和region_attributes。我该怎么办？