fix several bugs
fix several bugs

ionutcipriananescu/python,Ph0enixxx/python,Jaccorot/python,YGIronMan/python,tzq668766/python,merfii/PythonExercises,tzq668766/python,renzongxian/Show-Me-the-Code,whix/python,xiaoixa/python,zhenglaizhang/python,12wang3/python,renzongxian/Show-Me-the-Code,tzq668766/python,lz199144/python,Show-Me-the-Code/python,Show-Me-the-Code/python,ionutcipriananescu/python,snailwalker/python,JiYouMCC/python,sravaniaitha/python,xiaoixa/python,zhenglaizhang/python,starlightme/python,luoxufeiyan/python,Ph0enixxx/python,lz199144/python,karnikamit/python,xiaoixa/python,merfii/PythonExercises,hooting/show-me-the-code-python,agogear/python-1,JiYouMCC/python,ZuoGuocai/python,DIYgod/python,wangjun/python,fairyzoro/python,Pritesh242/python,tzq668766/python,luoxufeiyan/python,luoxufeiyan/python,keysona/python,yangzilong1986/python,ZuoGuocai/python,llluiop/python-1,xchaoinfo/python,llluiop/python-1,hooting/show-me-the-code-python,JiYouMCC/python,Ph0enixxx/python,JiYouMCC/python,zhenglaizhang/python,starlightme/python,JiYouMCC/python,wangjun/python,Show-Me-the-Code/python,Show-Me-the-Code/python,tzq668766/python,xiaoixa/python,EricSekyere/python,starlightme/python,merfii/PythonExercises,Yrthgze/prueba-sourcetree2,whix/python,xchaoinfo/python,hooting/show-me-the-code-python,fairyzoro/python,ionutcipriananescu/python,zhakui/python,12wang3/python,keysona/python,DanielShangHai/python,Jaccorot/python,Pritesh242/python,Friday21/python_show_me_the_code,ionutcipriananescu/python,keysona/python,Friday21/python_show_me_the_code,whix/python,zhakui/python,karnikamit/python,wangjun/python,DanielShangHai/python,agogear/python-1,Yrthgze/prueba-sourcetree2,Mark24Code/python,lz199144/python,yangzilong1986/python,dominjune/python,starlightme/python,whix/python,DanielShangHai/python,DanielShangHai/python,DanielShangHai/python,wangjun/python,YGIronMan/python,dominjune/python,sravaniaitha/python,12wang3/python,Ph0enixxx/python,Friday21/python_show_me_the_code,fairyzoro/python,ionutcipriananescu/python,ZuoGuocai/python,luoxufeiyan/python,xchaoinfo/python,Supersuuu/python,xchaoinfo/python,renzongxian/Show-Me-the-Code,Supersuuu/python,Friday21/python_show_me_the_code,lz199144/python,fairyzoro/python,DIYgod/python,Pritesh242/python,haiyangd/python-show-me-the-code-,lz199144/python,renzongxian/Show-Me-the-Code,agogear/python-1,ZSeaPeng/python,keysona/python,dominjune/python,EricSekyere/python,12wang3/python,starlightme/python,zhakui/python,EricSekyere/python,Show-Me-the-Code/python,hooting/show-me-the-code-python,Jaccorot/python,sravaniaitha/python,karnikamit/python,xchaoinfo/python,EricSekyere/python,zhakui/python,12wang3/python,Friday21/python_show_me_the_code,Supersuuu/python,yangzilong1986/python,llluiop/python-1,Yrthgze/prueba-sourcetree2,ZuoGuocai/python,snailwalker/python,yangzilong1986/python,llluiop/python-1,Jaccorot/python,Yrthgze/prueba-sourcetree2,luoxufeiyan/python,ZuoGuocai/python,Mark24Code/python,sravaniaitha/python,Mark24Code/python,agogear/python-1,renzongxian/Show-Me-the-Code,DIYgod/python,Show-Me-the-Code/python,zhenglaizhang/python,YGIronMan/python,merfii/PythonExercises,Supersuuu/python,zhakui/python,haiyangd/python-show-me-the-code-,snailwalker/python,llluiop/python-1,Mark24Code/python,Jaccorot/python,whix/python,sravaniaitha/python,EricSekyere/python,ZSeaPeng/python,karnikamit/python,ZSeaPeng/python,dominjune/python,karnikamit/python,Pritesh242/python,wangjun/python,fairyzoro/python,xiaoixa/python,keysona/python,yangzilong1986/python,dominjune/python,agogear/python-1,DIYgod/python,haiyangd/python-show-me-the-code-,Ph0enixxx/python,snailwalker/python,snailwalker/python,Mark24Code/python,merfii/PythonExercises,ZSeaPeng/python,zhenglaizhang/python,ZSeaPeng/python,Yrthgze/prueba-sourcetree2,Yrthgze/prueba-sourcetree2,haiyangd/python-show-me-the-code-,YGIronMan/python,Pritesh242/python,hooting/show-me-the-code-python,YGIronMan/python,haiyangd/python-show-me-the-code-