尝试拟合S形增长曲线，为什么会报TypeError？
def func1(x,K,a,r):
m = r*x
return K/(1+a * math.exp(m))
popt1,_ = curve_fit(func1,x,y)
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部分解决，换了numpy的exp方法，但又溢出了 D:\sumo\model.py:25: RuntimeWarning: overflow encountered in exp return K/(1+a * np.exp(m)) D:\sumo\model.py:28: OptimizeWarning: Covariance of the parameters could not be estimated popt1,_ = curve_fit(func1,x,y)