1、 在IDLE中新建脚本文件，例如命名为作图.py。 6、 linspace (0, 4*np.pi, 100) 表示在 0 到 4π 的区间内，均匀生成 100 个数据点。

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1)np.linspace(start, stop, num), e.g., np.linspace(0, 1, 100) will sample 100 data points from [0,1] with even space 1/100. 2)np.arange(start, stop, step, dtype=None ...

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If the num argument of numpy.linspace is larger than 1, it will return a Quantity 1D. If the num argument is 1 it will return a normal numpy array. Example: In [4]: np.linspace(1.0 * pq.s, 4.0 * pq.s, ...