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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