import sys
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
from scipy import stats
x = [89,43,36,36,95,10,66,34,38,20,26,29,48,64,6,5,36,66,72,40]
y = [21,46,3,35,67,95,53,72,58,10,26,34,90,33,38,20,56,2,47,15]
slope, intercept, r, p, std_err = stats.linregress(x, y)
def myfunc(x):
return slope * x + intercept
mymodel = list(map(myfunc, x))
plt.scatter(x, y, label='原始数据')
plt.plot(x, mymodel, color='red', label='回归线')
plt.legend()
plt.show()
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()