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
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