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

def char2num(s): ... return {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[s]

中{}[] 是什么意思啊

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

应该是找出[]中键的值。