如何修复RecursionError：调用Python对象时超出最大递归深度错误？
我想在trapesoid里面画一个集中的圆。为了做到这一点，我使用了下面的代码块。
我检查了条件a+B=c+d，a，b，c，d是梯形的边。
这个错误的原因是什么？
我在这里与你分享我的代码：

import turtle as t
import random as r

p1 = t.Pen()
# parameters
p1.speed(1)

def x1_solve():
    x1 = r.randrange(-300, 300)
    return x1
def x2_solve():
    x2 = r.randrange(-300, 300)
    return x2
def y2_solve():
    y2 = r.randrange(0, 250)
    return y2
def x3_solve():
    x3 = r.randrange(x2 + 1, x2 + abs(x1) - 21)
    return x3

x1 = x1_solve()
x2 = x2_solve()
y2 = y2_solve()
x3 = x3_solve()
def nums():
    global x1,x2,x3,y2
    if x1 > 150 or x1 < -150 and x2 > 150 or x2 < -150 and x3 > 150 or x3 < -150:
        pass
    else:
        x1 = x1_solve()
        x2 = x2_solve()
        y2 = y2_solve()
        x3 = x3_solve()
        nums()
nums()
if x1 > 0:
    side_1 = ((x2 + x1/2)**2 +(y2)**2)**(1/2)
    side_2 = ((x3 - x1/2)**2 +(y2)**2)**(1/2)
elif x1 < 0:
    side_1 = ((x2 - x1/2)**2 +(y2)**2)**(1/2)
    side_2 = ((x3 - abs(x1/2))**2 +(y2)**2)**(1/2)
def a():
    global side_1,side_2,x3,x2,x1
    if side_1 + side_2 == x3 - x2 + abs(x1):
        pass
    else:
        x3 = x3_solve()
        print(x3)
        a()
print(side_1)
print(side_2)
a()
p1.goto(x=abs(x1/2),y=0)
p1.pendown()
p1.forward(-1 * abs(x1))
p1.goto(x=x2,y=y2)
p1.goto(x=x3, y=y2)
p1.goto(x=abs(x1)/2,y = 0)
p1.penup()
p1.goto(x=-20,y=-100)
p1.pendown()
p1.write(x3-x2)
p1.penup()
p1.goto(x=-20,y=-120)
p1.pendown()
p1.write(abs(x1))
t.mainloop()

我也和你分享我的控制台错误：

Traceback (most recent call last):
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 52, in <module>
    a()
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 49, in a
    a()
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 49, in a
    a()
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 49, in a
    a()
  [Previous line repeated 992 more times]
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 47, in a
    x3 = x3_solve()
  File "C:\Users\azaz9\PycharmProjects\pythonProject1\zabit.py", line 18, in x3_solve
    x3 = r.randrange(x2 + 1, x2 + abs(x1) - 21)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\random.py", line 352, in randrange
    return istart + self._randbelow(width)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\random.py", line 245, in _randbelow_with_getrandbits
    k = n.bit_length()  # don't use (n-1) here because n can be 1
RecursionError: maximum recursion depth exceeded while calling a Python object

Process finished with exit code 1

这个问题可能是在递归。但是我不能处理这个错误。