Sympy match() 不适用于多个积分？
我想获取多个积分（）的参数：
'''
from sympy import *
z = symbols('z', real=True)
nu = Function('nu', real=True, positive=True)(z)
xx1 = nu.integrate((z,0,z))
xx2 = xx1.integrate((z,0,1))
xx1
xx2
xx1.cancel
xx2.cancel
'''
Integral and its Structure in jupyterlab shown
然后用“wild”类型变量“Wi”我尝试获取积分参数
''''
mm1 = Integral(W1,(W2,W3,W4))
mm2 = Integral(W1,(W2,W3,W4),(W5,W6,W7))
mm1
mm2
rr1 = xx1.match(mm1)
rr2 = xx2.match(mm2)
rr1
rr2.type()
''''
它适用于单积分，但不适用于多重积分。为什么？
第二个问题是：为什么积分变量“z”没有得到“W2”？ 第三问题：为什么“W1:nu(z)”中的变量“z”更改为符号“_0”？如何正确执行？
评论中推荐的“.list”不起作用： 给出错误消息
I want to obtain parameters of multiple integral ():
'''
from sympy import *
z = symbols('z', real=True)
nu = Function('nu', real=True, positive=True)(z)
xx1 = nu.integrate((z,0,z))
xx2 = xx1.integrate((z,0,1))
xx1
xx2
xx1.cancel
xx2.cancel
'''
Integral and its structure in jupyterlab shown
Then with "wild"-type variables "Wi" I try to obtain parameters of integrals
''''
mm1 = Integral(W1,(W2,W3,W4))
mm2 = Integral(W1,(W2,W3,W4),(W5,W6,W7))
mm1
mm2
rr1 = xx1.match(mm1)
rr2 = xx2.match(mm2)
rr1
rr2.type()
''''
It works for single integral but doesmt for multiple. Why?
SECOND question is: why integration variable "z" is not obtained to "W2"?
THIRD question: why variable "z" is changed to symbol "_0" in "W1:nu(z)? How to do it right?
Recommended in comment '.list' doesn't work:
gives error message
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每个表达式都有参数——你（显然）要做的就是捕获变量中的参数。为此不需要 Wild：
Every expression has args -- all you are (apparently) try to do is capture the arguments in variables. Wild are not needed for this: