plt.legend()提示 No handles with labels found to put in legend，不能正常显示 legend，不知哪里出问题，使用环境为 Spyder。
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1
xider Oct 24, 2018 via Android
没有代码看不出问题
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2
songdg OP 这是书上的一个例子，我发现不用 plt.show()就能显示，但是 plt.legend(loc=(0.64,0.1))就显示上面的提示。
import matplotlib.pyplot as plt d = [11,12,13,14,15,16,17] t0 = [15.3,12.6,12.7,13.2,12.3,11.4,12.8] t1 = [26.1,26.2,24.3,25.1,26.7,27.8,26.9] t2 = [22.3,20.6,19.8,21.6,21.3,19.4,21.4] plt.plot(d,t0,label='Tokyo') plt.plot(d,t1,label='Hawaii') plt.plot(d,t2,label='Hong Kong') plt.xlim(11,15) plt.ylim(0,30) plt.xlabel('Date',size=12,fontweight='semibold') plt.ylabel('Temperature (°C)',size=12,fontweight='semibold') plt.grid(True,linewidth=0.5,color='#aaaaaa',linestyle='-') plt.title("Daily temperature of 3 cities in the second week of December", size=14, fontweight='bold') plt.legend(loc=(0.64,0.1)) plt.show() |
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