将datetime转换为date python -->错误:不可散列的类型：'numpy.ndarray‘

from datetime import datetime

# 示例 datetime 对象
dt = datetime.now()

# 转换为 date 对象
date_obj = dt.date()
print(date_obj)

import pandas as pd

# 示例 DataFrame
data = {'datetime_col': [pd.Timestamp('2023-01-01 12:00:00'), pd.Timestamp('2023-01-02 13:00:00')]}
df = pd.DataFrame(data)

# 转换为 date 列
df['date_col'] = df['datetime_col'].dt.date
print(df)

import numpy as np
from datetime import datetime

# 示例 NumPy 数组
dt_array = np.array([datetime(2023, 1, 1, 12, 0, 0), datetime(2023, 1, 2, 13, 0, 0)])

# 使用 numpy.vectorize 转换为 date 数组
date_array = np.vectorize(lambda x: x.date())(dt_array)
print(date_array)

from datetime import datetime

# 示例列表
dt_list = [datetime(2023, 1, 1, 12, 0, 0), datetime(2023, 1, 2, 13, 0, 0)]

# 转换为 date 列表
date_list = [dt.date() for dt in dt_list]
print(date_list)