拼写错误，首行导入时把导入的包重命名为detasets，而第三行使用时缺写成datasets，首行拼写错误，应写为dataset
如果你需要在函数外部访问它,你需要将其作为函数的返回值,或者将其定义为全局变量(但通常不推荐这样做,因为它可能导致代码难以理解和维护)。 以上步骤应该能帮助你解决NameError: name 'x_train' is not defined的问题。如果问题仍然存在,请检查你的代码逻辑,确保x_train在使用前已经被正确定义和赋值。
NOT NULL或NULL表示该列是否接受NULL值。 DEFAULT值用于指定列的默认值。 10K00 SQL查询数据库(二) 如果指定的函数名称不明确,则InterSystems IRIS会发出SQLCODE -358错误。...以下示例从各个串行对象列返回值:SELECT TOP 4 Name,Home_Street,Home_City,Home_State,Home_PostalCodeFROM Sample.Person以下示例将所有...
1a) There is a condition that range optimizer can work on, and 1b) There are non-constant...conditions on one or more keys, and 1c) Some of the non-constant fields may have been read...this is not the first table in the join OR this is a subselect with non-constant...or,...
So familiar, yet so strange: mythic shadows of the medieval Gawain romance in Iris Murdoch's Green Knight THE British novelist Iris Murdoch is, undoubtedly, one of the most prolific mythopoetic writers of the twentieth century. From her philosophical writings, which are deeply imbued with Platoni...
endometrial cavity. Another alternative is to perform TVUS and assess the thickness of the endometrium (see Transvaginal Ultrasonography below). Finally, traction of the uterus with the endocervical Emmett’s tenaculum or a skin (Iris) hook (see Fig. 10) is of c...