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报错信息如下： [SQL]INSERT INTO read VALUES(123, 456) [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'read VALUES(123, 456)' at line 1 原因，read是数据库的关键字， 牢记，如果一个词是数据库的关键字，那么在写数据库语句的时候，这个词一定是蓝色的（关键字颜色）！！ 来源： https://www.cnblogs.com/yang101/p/11404565.html

day02-数据可视化-坐标-图例-标注-子图-刻度-半对数坐标-散点图-条形图-饼状图-等高线 3、设置坐标范围 mp.xlim(水平坐标最小值，水平坐标最大值) mp.ylim(垂直坐标最小值，垂直坐标最大值) 示例： import numpy as np import matplotlib.pyplot as mp x = np.linspace(-np.pi,np.pi,1000) cos_y = np.cos(x) / 2 sin_y = np.sin(x) mp.xlim(x.min() * 1.2,x.max() * 1.2 ) mp.ylim(sin_y.min() * 1.2,sin_y.max() * 1.2 ) mp.plot(x,cos_y,linestyle='--',linewidth= 1 ,color = 'green') # -- 为虚线 mp.plot(x,sin_y,linestyle=':', linewidth = 4,color='blue') # : 为点线 mp.show() 4、设置坐标刻度 mp.xticks([位置序列],[标签序列])，标签序列可以不需要 mp.yticks([位置序列],[标签序列]) 示例： import numpy as np import matplotlib.pyplot as mp x = np

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