TypeError: must be str, not set

遭遇例

修正前
▼index.py

global allExtLinks

allExtLinks = set()

result=[]

for i in range(5):

    getAllExternalLinks("http://oreilly.com")

    result.append("externalLinks: "+allExtLinks)

修正後
▼index.py

global allExtLinks

allExtLinks = set()

result=[]

for i in range(5):

    getAllExternalLinks("http://oreilly.com")

    result.append(allExtLinks)