Python Pandas - 返回根据值推断出的字符串类型
要返回根据值推断出的字符串类型,请在 Pandas 中使用index.inferred_type 属性。
首先,导入所需库 −
import pandas as pd import numpy as np
创建索引。对于 NaN,我们已经使用了 numpy 库 −
index = pd.Index(['Car','Bike', np.nan,'Car',np.nan, 'Ship', None, None])
显示索引 −
print("Pandas Index...\n",index)
返回根据值推断出的字符串类型 −
print("\nThe inferred type...\n",index.inferred_type)
示例
以下是代码 −
import pandas as pd import numpy as np # Creating the index # For NaN, we have used numpy library index = pd.Index(['Car','Bike', np.nan,'Car',np.nan, 'Ship', None, None]) # Display the index print("Pandas Index...\n",index) # Return an array representing the data in the Index print("\nArray...\n",index.values) # Check if the index is having NaNs print("\nIs the Pandas index having NaNs?\n",index.hasnans) # Return the dtype of the data print("\nThe dtype object...\n",index.dtype) # Return a string of the type inferred from the values print("\nThe inferred type...\n",index.inferred_type)
输出
这将生成以下代码 −
Pandas Index... Index(['Car', 'Bike', nan, 'Car', nan, 'Ship', None, None], dtype='object') Array... ['Car' 'Bike' nan 'Car' nan 'Ship' None None] Is the Pandas index having NaNs? True The dtype object... object The inferred type... Mixed
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