为什么会报错
a= ['Jenny', 'Ellena', 'Alice', 'Candy', 'David', 'Hally', 'Bob', 'Isen', 'Karl']
b=set()
for b in a:
b.add(a)
print(b)
a= ['Jenny', 'Ellena', 'Alice', 'Candy', 'David', 'Hally', 'Bob', 'Isen', 'Karl']
b=set()
for b in a:
b.add(a)
print(b)
2022-03-23
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