classmates = ['Michael', 'Bob', 'Tracy']
n=len(classmates)
m=0
while m<n:
print('hello,',classmates[m],'!')
m=m+1
print()
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遥远的唐朝
classmates = ['Michael', 'Bob', 'Tracy']
n=len(classmates)
m=0
while m<n:
print('hello,',classmates[m],'!')
m=m+1
print()