因为在这个程序当中你没有定义line这个变量啊
NameError: name 'a' is not defined 1. 2. 3. 4. 5. NameError 名称错误 原因及解决方案: 先给a赋值,才能使用它。当出现NameError时,绝大多数情况不是没被赋值,而是我们将单词拼错,或大小写没注意到。因此要回头好好检查下哪里错了。 SyntaxErrorError 报错: #错误1 >>> a = 1 >>> if a: print...
2.NameError: name 'xxx' is not defined 某个变量没有定义就去使用它。 for i in range(1, 6): s = s + i # 变量s没有定义,在for语句之前定义它可以解决 print( s) 3.SyntaxError: invalid character ')' (U+FF09) 一般是在语句中使用了中文输入的符号,比如括号,逗号,冒号,单引号,双引号等。
It is not yet clear how much more effective airline security has become—but thelinesare obvious. 出自-2017年考研阅读原文 First two hours , now three hours—this is how far in advance authorities are recommending people show up to catch a domestic flight , at least at some major U.airports...
Use this property to limit the number of points appearing on the screen at any given time or to limit the amount of memory used. If you specify the value asInf, then the animated line does not drop any points, but the number of points stored is limited by the amount of memory available...
Python 初学者常犯的一些错误 初学 Python 时常见的 Python 错误是：没有使用正确的缩进，忘记某些代码行末尾的冒号，在为变量赋值之前使用变量，尝试更改不可变对象等。Python 需要正确的缩进在 Python 中，正确的缩进是必须的，Python 代码通过缩进来定义程序结构。Python 程序中不正确的缩进导致语法错误。如果从其他...
If the variable used by the model is not a scalar variable, specify the parameter name as an expression that resolves to a numeric scalar value. For example, use the first element of vector V as a parameter. parameters.Name = 'V(1)'; Value— Parameter sample values, specified as a ...
package www.google.cn;import javax.script.ScriptEngine;import javax.script.ScriptEngineManager;import javax.script.ScriptException;public class demo1 { public static void main(String[] args) throws ScriptException { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine...
File "/usr/local/lib/python2.7/dist-packages/kernprof.py", line 221, in main execfile(script_file, ns, ns) File "directPixelBased/alignAll.py", line 9, in <module> @profile NameError: name 'profile' is not defined Ubuntu 14.04 with Python 2.7.6 ...
Hi Grosjona, When i try to test your sample, i got this problem, please check this essues. Thank you. 08-21 04:18:10.933 2248-2248/socketcluster.io.androiddemo D/test﹕ sending:{"handlerName":"connectHandler","data":"{"port":"8000","hostn...