用3.6.5版報錯是為什么呢？AttributeError: 'NoneType' object has no attribute 'join'

d?=?{?'Adam':?95,?'Lisa':?85,?'Bart':?59?}
def?generate_tr(name,?score):????
if?score?<?60:????????
????return?'<tr><td>%s</td><td?style="color:red">%s</td></tr>'?%?(name,?score)????
return?'<tr><td>%s</td><td>%s</td></tr>'?%?(name,?score)
tds?=?[generate_tr(name,?score)?for?name,?score?in?d.items()]
print?('<table?border="1">')
print?('<tr><th>Name</th><th>Score</th><tr>')
print?('\n').join(tds)
print?('</table>')

慕UI0587925

2018-06-13

源自：初識Python 10-2

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小萌新qwq
2018-07-22

d?=?{?'Adam':?95,?'Lisa':?85,?'Bart':?59?}
def?generate_tr(name,?score):
????if?score?<?60:
????????return?'<tr><td>%s</td><td?style="color:red">%s</td></tr>'?%?(name,?score)
????return?'<tr><td>%s</td><td>%s</td></tr>'?%?(name,?score)

tds?=?[generate_tr(name,?score)??for?name,?score?in?d.items()]
print?('<table?border="1">')
print?('<tr><th>Name</th><th>Score</th><tr>')
print?('\n'.join(tds))
print?('</table>')