饿，TIM老师的这个方程其实是可以化简的，也不是很复杂

import pandas as pd
import numpy as np

# def get_circumcircle_area(l,h):
#     r = np.sqrt(l**2+h**2)/2
#     return r**2*np.pi

# def get_circumcircle_area(l,h):
#     return np.pi*(l**2+h**2)/4
#
# def wrapper(row):
#      return get_circumcircle_area(row['Length'],row['Height'])

rects = pd.read_excel('D:/Temp/Rectangles.xlsx',index_col='ID')
rects['CA'] = rects.apply(lambda row:np.pi*(row['Length']**2+row['Height']**2)/4,axis=1)

print(rects)

这样的话一行就可以了