001、
>>> str1 = ">aabbcc"
>>> if str1.startswith(">"):
... print("yes")
...
yes
>>> if not str1.startswith(">"): ## python中if语句取反
... print("yes")
...
标签：语句,...,python,str1,取反,yes From： https://www.cnblogs.com/liujiaxin2018/p/16851448.html