Python Pandas - 返回底层索引数据中的元素数量

若要返回底层索引数据中的元素数量，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量 −

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

示例

以下为代码 −

import pandas as pd

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

# Display the index
print("Pandas Index...\n",index)

# Return the number of elements in the Index
print("\nNumber of elements in the index...\n",index.size)

# Return a tuple of the shape of the underlying data
print("\nA tuple of the shape of underlying data...\n",index.shape)

# get the bytes in the data
print("\nReturn the bytes...\n",index.nbytes)

# get the dimensions of the data
print("\nReturn the dimensions...\n",index.ndim)

输出

这会生成以下代码 −

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

AmitDiwan

更新于：2021-10-13

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