Python Pandas - 创建一个值类型转换为指定类型的索引
要为值类型转换为指定类型的索引创建索引,请在 Pandas 中使用 index.astype() 方法。首先,导入必需的库 −
import pandas as pd
创建 Pandas 索引 −
index = pd.Index([50.4, 10.2, 70.5, 110.5, 90.8, 50.6])
显示 Pandas 索引 −
print("Pandas Index...\n",index)将数据类型转换为 int64 −
index.astype('int64')
示例
以下是代码 −
import pandas as pd
# Creating Pandas index
index = pd.Index([50.4, 10.2, 70.5, 110.5, 90.8, 50.6])
# 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 object...\n",index.dtype)
# convert datatype to int64
print("\nIndex object after converting type...\n",index.astype('int64'))输出
这将生成以下输出 −
Pandas Index... Float64Index([50.4, 10.2, 70.5, 110.5, 90.8, 50.6], dtype='float64') Number of elements in the index... 6 The dtype object... float64 Index object after converting type... Int64Index([50, 10, 70, 110, 90, 50], dtype='int64')
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