Strange NameError: name 'math' is not defined, while "import math"

Question

我在执行这段代码时收到 NameError。这很奇怪，因为代码中有导入数学。 sigma 模块中有 import math ......也许这是一种冲突？感谢您的宝贵时间！

  File "C:\Users\Greenman\Documents\Python Scripts\sigma_crit.py", line 21, in sigma_crit
    # Simplified MC

NameError: name 'math' is not defined

import sigma as sgm # Module sigma has "import math" as well
import math
def sigma_crit(sigmaX, sigmaY, sigmaZ, Theta, Pw, Pres, nu, alpha, No):
    """
    Return value of critical stress calculated for one of three failure criterias.
    No: 1 - Simplified Mohr-Coulomb
        2 - Mohr-Coulomb
        3 - Drucker-Prager
        4 - list with 3 model's resutls
    sigmaX - stress at X wellbore axis
    sigmaY - stress at Y wellbore axis
    Theta - azimuth,anticlokwise from SH_max
    nu - Poisson's ratio
    alpha - Biot's  coefficient
    """ 
    sigma_theta = sgm.sigma_calc(sigmaX, sigmaY, sigmaZ, Theta, Pw, Pres, nu, alpha, 1)
    sigma_zi = sgm.sigma_calc(sigmaX, sigmaY, sigmaZ, Theta, Pw, Pres, nu, alpha, 2)
    sigma_thzi = sgm.sigma_calc(sigmaX, sigmaY, sigmaZ, Theta, Pw, Pres, nu, alpha,3)
    # Conerting degrees to radians for below equations...Caution above functions has built-in converter
    Theta = math.radians(Theta)
    # Simplified MC

Answer 1

你是运行陈旧的字节码。您更改了源文件但没有重新启动 Python.

你可以从回溯中看出这一点；回溯是通过读取源文件并从字节码中获取嵌入的行号信息生成的运行显示源中的相应行。

但是你的回溯显示了 next 行的注释；字节码参考显然已过时，您更改了代码。

Answer 2

我也出现同样的错误，下面的操作对我有效：

改变

import math

至

from math import sqrt, ceil

所以我认为你可以单独从数学中导入你想使用的函数。

Strange NameError: name 'math' is not defined, while "import math"

Strange NameError: name 'math' is not defined, while "import math"

python

math

nameerror

python-3.x