Python Pandas - 从索引对象返回包含唯一值计数的系列
要从Index对象返回包含唯一值计数的系列，请使用Pandas中的方法。index.value_counts()
首先，导入所需的库——
import pandas as pd
创建熊猫索引-
index = pd.Index([50, 10, 70, 110, 90, 50, 110, 90, 30])
显示熊猫指数-
print("Pandas Index...\n",index)唯一值的计数-
print("\nGet the count of unique values...\n",index.value_counts())示例
以下是代码-
import pandas as pd
#创建Pandas索引
index = pd.Index([50, 10, 70, 110, 90, 50, 110, 90, 30])
#显示Pandas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)
#返回数据的dtype
print("\nThe dtype object...\n",index.dtype)
#唯一值的计数
print("\nGet the count of unique values...\n",index.value_counts())输出结果这将产生以下输出-
Pandas Index... Int64Index([50, 10, 70, 110, 90, 50, 110, 90, 30], dtype='int64') Number of elements in the index... 9 The dtype object... int64 Get the count of unique values... 50 2 110 2 90 2 10 1 70 1 30 1 dtype: int64