一个关于Python的

一个关于Python的，希望和大家一起学习探讨共勉，非常感谢，一个人不太理解

img

l = ("hello",10,"goodbye",3,"goodnight",5)

n = 0
for i in l:
    if isinstance(i,str) and i.isalpha():
        n += 1
print(f"There are {n} words in the tuple.")