python - “TypeError: cannot create mpf from d”'，当执行“For”结构时

Question

import sympy.printing as printing
from IPython.display import display, Math, Latex
from sympy import *
from mpmath import *
from sympy.codegen.ast import aug_assign, For

init_printing()

c, d, c_max, d_max, jzeros = symbols("c d c_max d_max jzeros")

c_max.subs(c_max, 3)
d_max.subs(d_max, 3)

For(d, Range(d_max.subs(d_max, 3)), [jzeros.subs(jzeros, besseljzero(d, c_max))])

为什么执行上述代码时会出现此错误（“TypeError: cannot create mpf from d”）？如何使此代码工作？我正在尝试根据此“For”文档进行编码：https ://docs.sympy.org/latest/modules/codegen.html#sympy.codegen.ast.For

标签： pythonmathsympysymbolic-mathmpmath