求助为什么会报错
river = { 'nile':'eygot','huang river':'china','mississippi river':'america'}for key,value in river.items():
print(f"The {key.title()} runs through {value.title()} ")
for river in sorted(river.keys()):
print(river)
for nation in sorted(river.values()):
print(nation)
为什么会报错呢？
下面两个for循环去掉一个就不报错了，又是为什么呢？ river = { 'nile':'eygot','huang river':'china','mississippi river':'america'}
for key,value in river.items():
print(f"The {key.title()} runs through {value.title()} ")
for river in sorted(river.keys()): # 这里你用和字典同名（river）已经改变 river 值了，river 不再是字典了
print(river)
for nation in sorted(river.values()):
print(nation) 傻眼貓咪 发表于 2021-10-11 12:32
豁然开朗，少打了一个s，谢谢
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