1.python3.x，打印为print()
2.python3.x，没有raw_input。input同raw_input()等效
3.python3.x，打印不换行print (i,end="")
4.当前系统时间：time.ctime()
5.调用其他路径下的模块
import sys sys.path.append（'d:\a'）
6.打印异常信息：
try:
XXX
except BaseException as msg:
print (msg)