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- #!/usr/bin/env python3.7
- # 2.1序列概述
- # edward = ['Edward Gumby', 42]
- # john = ['John Smith', 50]
- # database = [edward, john]
- # print(database) # [['Edward Gumby', 42], ['John Smith', 50]]
- # 2.2
- ## 索引
- # greeting = 'Hello'
- # print(greeting[0]) # H
- # print(greeting[3]) # l
- # fourth = input('Year: ')[3]
- # print(fourth)
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