Python - 检查 Pandas 索引是否包含类别数据
如需检查 Pandas 索引是否包含类别数据,请在 Pandas 中使用 index.is_categorical() 方法。首先,导入必需的库 -
import pandas as pd
使用 astype() 方法创建带有类型设置为 category 的 Pandas 索引 −
index = pd.Index(["Electronics","Accessories","Furniture"]).astype("category")
显示 Pandas 索引 −
print("Pandas Index...\n",index)检查索引是否包含类别数据 −
print("\nDoes Index holds categorical data?\n",index.is_categorical())示例
以下是代码 −
import pandas as pd
# Creating Pandas index
index = pd.Index(["Electronics","Accessories","Furniture"]).astype("category")
# Display the Pandas 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 the dtype of the data
print("\nThe dtype...\n",index.dtype)
# check whether index holds categorical data
print("\nDoes Index holds categorical data?\n",index.is_categorical())输出
这将生成以下输出 −
Pandas Index... CategoricalIndex(['Electronics', 'Accessories', 'Furniture'], categories=['Accessories', 'Electronics', 'Furniture'], ordered=False, dtype='category') Number of elements in the index... 3 The dtype... category Does Index holds categorical data? True
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