python面试基础知识(一)

一、字符串常见操做 切片 mystr='helloworld' mystr=mystr[1:3] # print(mystr) format mystr2 = 'welcome, dear {name}' mystr2 = mystr2.format(name = "haha") # print(mystr2) join mystr3 = ['luo','bo','da','za'] myst

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