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早起的达先生

#1 Created at ... [Delete] [Delete and Lock User]

作业1 

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

L = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]
def by_name(t):
    return t[0]
L2 = sorted(L, key=by_name)
print(L2)

作业2

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

L = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]
def by_name(t):
    return t[1]
L2 = sorted(L, key=by_name,reverse=True)
print(L2)

早起的达先生

#2 Created at ... [Delete] [Delete and Lock User] 
#!/usr/bin/env python3
# -*- coding: utf-8 -*-

L = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]
def by_name(t):
    s=t[0]
    return s.lower()
L2 = sorted(L, key=by_name)
print(L2)

叶音稀声

#3 Created at ... [Delete] [Delete and Lock User]

灰常感谢！！！

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