目录新手必踩的8大语法坑1. 缩进错误（IndentationError）2. 冒号遗漏（SyntaxError）3. 变量未定义（NameError）4. 修改不可变对象（TypeError）5类高频运行时异常1. 类型错误（TypeError）2. 键值错误（KeyError）
I have a very large database with about 120 Million records in one table.I have clean up the data in this table first before I divide it into several tables(possibly normalizing it). The columns of th
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