为pandas DataFrame设置新的索引(插值？)

import pandas as pd

# 创建一个示例DataFrame
data = {'A': [1, 2, 3, 4],
        'B': [5, 6, 7, 8],
        'C': [9, 10, 11, 12]}
df = pd.DataFrame(data)

# 设置新的索引
df_new = df.set_index('A')

# 打印新的DataFrame
print(df_new)

   B   C
A       
1  5   9
2  6  10
3  7  11
4  8  12

import pandas as pd

# 创建一个示例DataFrame
data = {'A': [1, 2, 3, 4],
        'B': [5, 6, 7, 8],
        'C': [9, 10, 11, 12]}
df = pd.DataFrame(data)

# 设置新的索引
df_new = df.set_index('A')

# 对DataFrame进行插值
df_interpolated = df_new.interpolate()

# 打印插值后的DataFrame
print(df_interpolated)

     B     C
A           
1  5.0   9.0
2  6.0  10.0
3  7.0  11.0
4  8.0  12.0