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代码如下：其中s（x_point_s,y_point_s）,e(x_point_e,y_point_e)为两点坐标：
def calc_angle(x_point_s,y_point_s,x_point_e,y_point_e):
angle=0
y_se= y_point_e-y_point_s;
x_se= x_point_e-x_point_s;
if x_se==0 and y_se>0:
angle = 360
if x_se==0 and y_se<0:
angle = 180
if y_se==0 and x_se>0:
angle = 90
if y_se==0 and x_se<0:
angle = 270
if x_se>0 and y_se>0:
angle = math.atan(x_se/y_se)*180/math.pi
elif x_se<0 and y_se>0:
angle = 360 + math.atan(x_se/y_se)*180/math.pi
elif x_se<0 and y_se<0:
angle = 180 + math.atan(x_se/y_se)*180/math.pi
elif x_se>0 and y_se<0:
angle = 180 + math.atan(x_se/y_se)*180/math.pi
return angle
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