我有一個(gè)問(wèn)題試圖讓我的日期刻度在matplotlib中旋轉(zhuǎn)。下面是一個(gè)小樣本程序。如果我嘗試在末尾旋轉(zhuǎn)刻度線，則刻度線不會(huì)旋轉(zhuǎn)。如果我嘗試旋轉(zhuǎn)注釋'崩潰'下顯示的刻度，則matplot lib崩潰。只有當(dāng)x值是日期時(shí)才會(huì)發(fā)生這種情況。如果我用調(diào)用中dates的變量替換變量，則調(diào)用在內(nèi)部工作正常。tavail_plotxticks(rotation=70)avail_plot有任何想法嗎？import numpy as npimport matplotlib.pyplot as pltimport datetime as dtdef avail_plot(ax, x, y, label, lcolor):    ax.plot(x,y,'b')    ax.set_ylabel(label, rotation='horizontal', color=lcolor)    ax.get_yaxis().set_ticks([])    #crashes    #plt.xticks(rotation=70)    ax2 = ax.twinx()    ax2.plot(x, [1 for a in y], 'b')    ax2.get_yaxis().set_ticks([])    ax2.set_ylabel('testing')f, axs = plt.subplots(2, sharex=True, sharey=True)t = np.arange(0.01, 5, 1)s1 = np.exp(t)start = dt.datetime.now()dates=[]for val in t:    next_val = start + dt.timedelta(0,val)    dates.append(next_val)    start = next_valavail_plot(axs[0], dates, s1, 'testing', 'green')avail_plot(axs[1], dates, s1, 'testing2', 'red')plt.subplots_adjust(hspace=0, bottom=0.3)plt.yticks([0.5,],("",""))#doesn't crash, but does not rotate the xticks#plt.xticks(rotation=70)plt.show()