将pandas序列和dataframe对象转换为numpy数组

import pandas as pd
import numpy as np

# 创建一个pandas序列
s = pd.Series([1, 2, 3, 4, 5])

# 将序列转换为numpy数组
arr = s.values

# 打印转换后的numpy数组
print(arr)

import pandas as pd
import numpy as np

# 创建一个pandas dataframe对象
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})

# 将dataframe转换为numpy数组
arr = df.values

# 打印转换后的numpy数组
print(arr)