Python数据分析NumPy数组-阿里云

Python数据分析之numpy数组全解析什么是numpynumpy是一个在Python中做科学计算的基础库，重在数值计算，也是大部分Python科学计算库的基础库，多用于大型、多维数据上执行数值计算。在NumPy 中，最重要的对象是称为 ndarray 的N维数组类型，它是描述相同类型的元素集合，numpy所有功能几乎都以ndarray为...

【Python数据分析 - 8】：Numpy数组间的运算 Numpy数组间的运算数组的简单运算当数组进行加运算（或减运算等其他简单运算），所有元素统一加或减等。数组的广播机制在NumPy中，当两个数组的形状不相同时，可扩充较小数组中的元素来适配较大数组的形状，这种机制叫作广播(broadcasting)。广播机制的本质，就是张量自动扩展，它是......

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《Python数据分析》一2.11 NumPy数组的广播本节书摘来自异步社区《Python数据分析》一书中的第2章，第2.11节，作者【印尼】Ivan Idris，更多章节内容可以访问云栖社区“异步社区”公众号查看 2.11 NumPy数组的广播当操作对象的形状不一样时，NumPy会尽力进行处理。例如，假设一个数组要跟一个标量相乘，这时标量需要根据数...

《Python数据分析》一1.4 NumPy数组本节书摘来自异步社区《Python数据分析》一书中的第1章，第1.4节，作者【印尼】Ivan Idris，更多章节内容可以访问云栖社区“异步社区”公众号查看 1.4 NumPy数组安装好NumPy后，就可以开始摆弄NumPy数组了。与Python中的列表相比，进行数值运算时NumPy数组的效率要高...

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