异常处理
修改报名名单
https://www.nowcoder.com/practice/a7f5738b05564534a3daae0d14c890d3
entry_form = ("Niuniu", "Niumei")
print(entry_form)
try:
entry_form[1] = "Niukele"
except TypeError:
print("The entry form cannot be modified!")
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