论坛 › Python交流 › 求问python求解定积分

小猴猴 发表于 2021-3-1 23:25:31

求问python求解定积分

我用这个方法求解定积分，之前尝试成功过，突然就报错NameError，请问大神们是怎么回事呢？
from sympy import *
x = symbols('x')
print(integrate(x, (x, 1, 2)))

然后会报下面错误
D:\python\python.exe D:/python/Python_Documents/HProject/稳定计算/位移计算.py
Traceback (most recent call last):
File "D:/python/Python_Documents/HProject/稳定计算/位移计算.py", line 1, in <module>
    from sympy import *
File "D:\python\lib\site-packages\sympy\__init__.py", line 22, in <module>
    import mpmath
File "D:\python\lib\site-packages\mpmath\__init__.py", line 5, in <module>
    from .ctx_fp import FPContext
File "D:\python\lib\site-packages\mpmath\ctx_fp.py", line 1, in <module>
    from .ctx_base import StandardBaseContext
File "D:\python\lib\site-packages\mpmath\ctx_base.py", line 10, in <module>
    from .calculus.optimization import OptimizationMethods
File "D:\python\lib\site-packages\mpmath\calculus\optimization.py", line 3, in <module>
    from copy import copy
File "D:\python\Python_Documents\HProject\稳定计算\copy.py", line 2, in <module>
    x = symbols('x')
NameError: name 'symbols' is not defined

Process finished with exit code 1

Daniel_Zhang 发表于 2021-3-2 00:59:47

不知道啊，我机器上这段代码是好的{:10_245:}

Hela 发表于 2021-3-2 06:59:13

多了个括号还是少了个

hrp 发表于 2021-3-2 07:14:04

你的源代码不要命名为copy.py，换个名字

wp231957 发表于 2021-3-2 08:39:16

d:\wp>py
Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from sympy import *
>>> x = symbols('x')
>>> print(integrate(x, (x, 1, 2)))
3/2
>>>

小猴猴 发表于 2021-3-2 08:44:13

hrp 发表于 2021-3-2 07:14
你的源代码不要命名为copy.py，换个名字

感谢，解决了

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