Python Pandas - 计算输入标签的分片索引器


要计算输入标签的分片索引器,请使用 index.slice_indexer() 方法。首先,导入所需的库 -

import pandas as pd

创建 Pandas 索引对象 -

index = pd.Index(list('pqrstuvwxyz'))

显示 Pandas 索引 -

print("Pandas Index...\n",index)

获取分片索引器。“开始”是开始的标签。“结束”是要结束的标签 -

print("\nThe slice indexer with start and stop...\n",index.slice_indexer(start='s', end='w'))

示例

以下是代码 -

import pandas as pd

# create Pandas index object
index = pd.Index(list('pqrstuvwxyz'))

# 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)

# Get the slice indexer
# The "start" is the label to begin with
# The "end" is the label to end with
print("\nThe slice indexer with start and stop...\n",index.slice_indexer(start='s', end='w'))

输出

它将生成以下输出 -

Pandas Index...
Index(['p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'], dtype='object')

Number of elements in the index...
11

The slice indexer with start and stop...
slice(3, 8, None)

更新日期:14-10-2021

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