Python Pandas - 计算输入标签的切片位置

若要计算输入标签的切片位置，请使用 index.slice_locs() 方法。首先，导入必需的库 -

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)

获取切片位置。“start”是开始的标签。“end”是结束的标签

print("\nThe slice locations with start and stop...\n",index.slice_locs(start='q', end='v'))

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 locations
# The "start" is the label to begin with
# The "end" is the label to end with
print("\nThe slice locations with start and stop...\n",index.slice_locs(start='q', end='v'))

输出

这将产生以下输出 -

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 locations with start and stop...
(1, 7)

更新于： 14-Oct-2021

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