result=unknown_variable # NameError,因为unknown_variable未定义 错误二:作用域问题 代码语言:javascript 复制 defmy_function():print(my_var)# NameError,因为my_var在函数外部未定义 错误三:导入错误 代码语言:javascript 复制 importmathprint(Math.PI)# NameError,因为Math应为math 错误四:变量未定义 代码语言...
Did you hit byNameError: name is not defined in Python? Let me tell you what theNameError: name is not defined in Python erroris, How we get into this, and also how to fix this. In this Python article, I will discuss everything aboutNameError: name is not defined in Pythonwith ex...
Table ‘xxx’ already exists: 这个错误意味着你已经有一个与你的模型同名的数据库表。你可以使用python manage.py migrate <app_name>zero命令来重置你的数据库。 NameError: name ‘xxx’ is not defined: 这个错误可能是由于在迁移文件中使用了未定义的字段或方法。确保你引用的所有字段和方法都已在模型中定义。
In Python, aNameError: name 'x' is not definederror is raised when the program attempts to access or use a variable that has not been defined or assigned a value. This can happen if the variable is spelled incorrectly, or if it is accessed before it has been defined. What Causes Undef...
scipy stats module report name 'obj' not defined Context information (for bug reports) Output of pyinstaller --version: 6.0.0 Version of Python: 3.12.0 Platform: Windows (zh-CN) How you installed Python: conda Did you also try this on an...
上述代码失败,并显示消息name 'result' is not defined。这是由于Result对象因工具失败而无法进行创建。因为未创建Result对象,因此会在尝试使用getMessages方法时引发 Python 错误。 注: 即使在工具失败的情况下,也会创建通过调用ArcGIS Server上的地理处理服务所创建的Result对象。仅当工具在本地运行且引发错误时,创建...
table = string.maketran s(string.ascii_ lowercase, string.ascii_lo wercase[2:]+string.ascii_l owercase[:2]) print string.translat e(text,table) Guilherme Polo #4 Jun 27 '08, 04:30 PM Re: NameError: name 'maketrans' is not defined, pythonchallenge ...
但是当第二次使用上面语法创建时已经关闭了以上窗口,重新连接数据库,创建myclass表时会报错:“NameError: name 'mytable' is not defined”,无奈,只能重新执行上面步骤,却报错了“ AttributeError: 'str' object has no attribute 'c' ”,怀疑是自己环境问题,随之又使用了Anaconda安装了SQLAlchemy1.2.7,MySQL采用...
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
Consider the following valid Python 3 code: class A(): pass class B(): def __init__(self): self.a = A b = B() class C(b.a): pass Actual behavior: Mypy will report Name 'b.a' is not defined on the line class C(b.a):. Expected behavior: No...