Python Pandas - 返回底层索引数据中的元素数

要返回基础索引数据中的元素数，请使用Pandas中的index.size属性。

首先，导入所需的库-

import pandas as pd

创建索引-

index = pd.Index([15, 25, 35, 45, 55])

显示索引-

print("Pandas Index...\n",index)

返回索引中的元素数-

print("\nNumber of elements in the index...\n",index.size)

示例

以下是代码-

import pandas as pd #创建索引 index = pd.Index([15, 25, 35, 45, 55]) #显示索引 print("Pandas Index...\n",index) #返回索引中的元素数 print("\nNumber of elements in the index...\n",index.size) #返回基础数据形状的元组 print("\nA tuple of the shape of underlying data...\n",index.shape) #获取数据中的字节 print("\nReturn the bytes...\n",index.nbytes) #获取数据的维度 print("\nReturn the dimensions...\n",index.ndim)输出结果

这将产生以下代码-

Pandas Index... Int64Index([15, 25, 35, 45, 55], dtype=int64) Number of elements in the index... 5 A tuple of the shape of underlying data... (5,) Return the bytes... 40 Return the dimensions... 1