Padding控件即填充控件,能给子控件插入给定的填充。
import package:flutter/material.dart;
class LayoutDemo extends StatelessWidget {overrideWidget build(BuildContext context) {return new Scaffold(appBar: new AppBar(title: new Text(填充),),body: ne…
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matplotlib报错ValueError: height and width must be > 0解决方案
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问题案例
import matplotlib.pyplot as plt
x [1, 2, 3, 4, 5]
y [1, 4, 9, 16, 25]
plt.plot(x, y)
plt.show()运行以上画图代码,报错ValueError: height and width must be > …