test branch
提交level6测试，解决文件丢失的冲突
Merge branch 'master' of https://github.com/xinedison/python_challenge
测试修改一个文件，看看能否解决文件丢失问题
解决文件丢失问题
Merge branch 'develop'
找回丢失文件
Conflicts:
	code/level0.py
	code/level1.py
	code/level2-2.py
	code/level2-3.py
	code/level2.py
	code/level3-2.py
	code/level3.py
	code/level4.py
	code/level5.py
	code/translator.py
	data/level2-data.dat