错误提示没有num_rows这个内置函数，你是不是忘记导入什么模块了，或者忘记新建一个函数 num_rows（）了
在使用 Python 时，如果遇到了 NameError: global name 'control_queue' is not defined 的错误，通常...
NameError: name 'x' is not defined 是 Python 中常见的错误之一,通常表示你尝试访问一个尚未定义的变量或函数。...特别是全局名称未定义时,意味着你在使用某个全局变量或函数时,Python 在当前命名空间中找不到该名称。...1、问题背景在使用 Python 时,如果遇到了 Na..
4. 在 for 循环语句中忘记调用 len() 导致“TypeError: 'list' object cannot be interpreted as an integer” 通常你想要通过索引来迭代一个list或者string的元素,这需要调用 range() 函数。要记得返回len 值而不是返回这个列表。 该错误发生在如下代码中: 复制 spam= ['cat', 'dog', 'mouse']for i in...
1 查看model.py文件，具体操作如： root@ubuntu118:/home/python/work/mysite/mysite/blog# ...
DTS_E_ENUMERATIONELEMENTNOTENUMERABLE DTS_E_EOFANNOUNCEMENTFAILED DTS_E_ERRMSGTASK_DIFFERENTMESSAGEANDLANGUAGESIZES DTS_E_ERRMSGTASK_EMPTYSOURCELIST DTS_E_ERRMSGTASK_ERRORMESSAGEALREADYEXISTS DTS_E_ERRMSGTASK_ERRORMESSAGECANTBEFOUND DTS_E_ERRMSGTASK_ERRORMESSAGEOUTOFRANGE DTS_E_ERRMS...
HCLUSENUM structure (Windows) HNODEENUMEX structure (Windows) IStartMenuPinnedList Flat Scroll Bars B (Windows) Determining Whether Server Core Is Running (Windows) Developing for and Migrating Existing Code to Server Core (Windows) IHeaderCtrl2::SetColumnWidth method (Windows) HREGBATCHPORT stru...
The exception thrown when the user is asking for a collection not available for the current server version. Column Instance class encapsulating : Server[@Name='']/Database/Table/Column ColumnCollection Strongly typed list of MAPPED_TYPE objects Has strongly typed support for all of the methods...
The exception thrown when the user is asking for a collection not available for the current server version. Column Instance class encapsulating : Server[@Name='']/Database/Table/Column ColumnCollection Strongly typed list of MAPPED_TYPE objects Has strongly typed support for all of the methods...
DTS_E_ENUMERATIONELEMENTNOTENUMERABLE DTS_E_EOFANNOUNCEMENTFAILED DTS_E_ERRMSGTASK_DIFFERENTMESSAGEANDLANGUAGESIZES DTS_E_ERRMSGTASK_EMPTYSOURCELIST DTS_E_ERRMSGTASK_ERRORMESSAGEALREADYEXISTS DTS_E_ERRMSGTASK_ERRORMESSAGECANTBEFOUND DTS_E_ERRMSGTASK_ERRORMESSAGEOUTOFRANGE DTS_E_ERRMSGTASK_...