NameError: global name 'actionWithlevel' is not defined If "print" command used then there is no problems with dealing with variable. But when I'm trying to get only specific char from the string I'm getting error. I can't understand why does it happening. And if it's a normal...
我在运行MIT的python公开课所提供的如下一段代码的时候,Spyder IDE报错 NameError: name 'figure' is not defined 同时,IDE在代码部分给出了错误提示,'from pylab import * unable to detect undefined names'请教各位,该如何处理这一错误,多谢 补充:有没有可能是这个库没有导进去,但是之前我跑类似的代码,导入py...
line15,in<module>print('删除后 dict_demo =',dict_demo)NameError:name'dict_demo'isnotdefined ...
Here is what my tree looks like, starting from my root directory: abraca@SS:~$ ls SymPy/sympy/sympy abc.py core integrals polys tensor algebras crypto interactive printing testing assumptions diffgeom liealgebras release.py this.py benchmarks discrete logic sandbox unify calculus external mat...
print piNameError: name 'pi' is not defined6.4.3.2.import…as…语句该语句可为模块临时声明一个别名,以方便在下面代码中使用。起到简化输入的目的。如:import pandas as pdfrom pandas import DataFramedef savetoExcelfile(stringCoastID,listMembers,floatavgCost):...
>>> @didyoumean.didyoumean_api.didyoumean_decorator ... def foo(): return abcd ... >>> foo() Traceback (most recent call last): File "<stdin>", line 2, in foo NameError: global name 'abcd' is not defined. Did you mean 'abc' (global)?
x =5x5print(x)5print(spam)Traceback (most recent call last): Filestdin, line1,inmoduleNameError:name'spam'isnotdefined 首先,变量x被赋值为5(使用数字字面量5)。在第二行交互中,我们要求Python对表达式x求值。作为响应,Python shell打印出5,这是刚才赋给x的值。当然,如果我们明确要求Python用print语句...
NameError:name'spam'isnotdefined 首先,变量x被赋值为5(使用数字字面量5)。在第二行交互中,我们要求Python对表达式x求值。作为响应,Python shell打印出5,这是刚才赋给x的值。当然,如果我们明确要求Python用print语句打印x,也会得到相同的结果。最后一个交互展示了如果尝试使用未赋值的变量,会发生什么。Python找不...
diff(pf(x) , x)) #表达式化简,因为符号计算没有经过化简,化简到最简形式。 1 ────────── 2 x + x + 1 >>> pf(4) - pf(0) √3⋅π 2⋅√3⋅atan(3⋅√3) - ──── + ─────────────── 9 3 >>> sympy.simplify(pf(4) - pf(0)) √3⋅...
NameError: name 'os' is not defined >>> os = reload(site.os) >>> os.system('whoami') macr0phag3 0 1. 2. 3. 4. 5. 6. 7. 8. 9. 还有,既然所有的类都继承的object,那么我们先用__subclasses__看看它的子类,以 2.x 为例: ...