Python Pandas - 设置要排序的 CategoricalIndex 的类别
要设置要排序的CategoricalIndex的类别，请使用as_ordered()Pandas中的方法。
首先，导入所需的库-
import pandas as pd
使用“categories”参数设置分类的类别-
catIndex = pd.CategoricalIndex(["p", "q", "r", "s","p", "q", "r", "s"], categories=["p", "q", "r", "s"])
获取类别-
print("\nDisplaying Categories from CategoricalIndex...\n",catIndex.categories)设置要订购的类别-
print("\nCategoricalIndex ordered...\n", catIndex.as_ordered())示例
以下是代码-
import pandas as pd
# Set the categories for the categorical using the "categories" parameter
catIndex = pd.CategoricalIndex(["p", "q", "r", "s","p", "q", "r", "s"], categories=["p", "q", "r", "s"])
#显示分类索引
print("CategoricalIndex...\n",catIndex)
#获取类别
print("\nDisplaying Categories from CategoricalIndex...\n",catIndex.categories)
#设置要排序的类别
print("\nCategoricalIndex ordered...\n", catIndex.as_ordered())输出结果这将产生以下输出-
CategoricalIndex... CategoricalIndex(['p', 'q', 'r', 's', 'p', 'q', 'r', 's'], categories=['p', 'q', 'r', 's'], ordered=False, dtype='category') Displaying Categories from CategoricalIndex... Index(['p', 'q', 'r', 's'], dtype='object') CategoricalIndex ordered... CategoricalIndex(['p', 'q', 'r', 's', 'p', 'q', 'r', 's'], categories=['p', 'q', 'r', 's'], ordered=True, dtype='category')
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