return str type for __str__ function (#919)
return str type for __str__ function (#919)


lucperkins/heron,ashvina/heron,streamlio/heron,mycFelix/heron,wangli1426/heron,lewiskan/heron,streamlio/heron,tomncooper/heron,billonahill/heron,tomncooper/heron,tomncooper/heron,srkukarni/heron,ashvina/heron,billonahill/heron,streamlio/heron,tomncooper/heron,lewiskan/heron,streamlio/heron,nlu90/heron,huijunwu/heron,lucperkins/heron,objmagic/heron,srkukarni/heron,nlu90/heron,tomncooper/heron,twitter/heron,wangli1426/heron,cliffyg/heron,lucperkins/heron,tomncooper/heron,moomou/heron,moomou/heron,lucperkins/heron,lukess/heron,cliffyg/heron,ashvina/heron,lewiskan/heron,twitter/heron,twitter/heron,zhangzhonglai/heron,mycFelix/heron,srkukarni/heron,moomou/heron,zhangzhonglai/heron,cliffyg/heron,mycFelix/heron,nlu90/heron,cs564/heron,zhangzhonglai/heron,objmagic/heron,lukess/heron,billonahill/heron,nlu90/heron,tomncooper/heron,nlu90/heron,moomou/heron,objmagic/heron,huijunwu/heron,twitter/heron,wangli1426/heron,objmagic/heron,lucperkins/heron,billonahill/heron,billonahill/heron,moomou/heron,zhangzhonglai/heron,moomou/heron,wangli1426/heron,billonahill/heron,zhangzhonglai/heron,tomncooper/heron,zhangzhonglai/heron,twitter/heron,ashvina/heron,srkukarni/heron,lukess/heron,streamlio/heron,cs564/heron,cs564/heron,lewiskan/heron,cs564/heron,lewiskan/heron,zhangzhonglai/heron,moomou/heron,mycFelix/heron,lukess/heron,srkukarni/heron,nlu90/heron,ashvina/heron,lucperkins/heron,mycFelix/heron,mycFelix/heron,srkukarni/heron,streamlio/heron,ashvina/heron,nlu90/heron,moomou/heron,objmagic/heron,ashvina/heron,billonahill/heron,wangli1426/heron,mycFelix/heron,nlu90/heron,cs564/heron,srkukarni/heron,ashvina/heron,zhangzhonglai/heron,cliffyg/heron,zhangzhonglai/heron,huijunwu/heron,streamlio/heron,huijunwu/heron,cs564/heron,huijunwu/heron,wangli1426/heron,lukess/heron,billonahill/heron,lukess/heron,nlu90/heron,cliffyg/heron,moomou/heron,ashvina/heron,srkukarni/heron,billonahill/heron,lukess/heron,tomncooper/heron,lukess/heron,lukess/heron,huijunwu/heron,wangli1426/heron,lewiskan/heron,lucperkins/heron,cliffyg/heron,twitter/heron,wangli1426/heron,twitter/heron,streamlio/heron,cliffyg/heron,huijunwu/heron,twitter/heron,lewiskan/heron,streamlio/heron,objmagic/heron,cliffyg/heron,mycFelix/heron,lucperkins/heron,objmagic/heron,cs564/heron,objmagic/heron,cs564/heron,lewiskan/heron,huijunwu/heron,cliffyg/heron,cs564/heron,lewiskan/heron,wangli1426/heron,mycFelix/heron,objmagic/heron