将不等长的矢量组合成数据帧

import pandas as pd

# 创建不等长的矢量
vector1 = [1, 2, 3]
vector2 = [4, 5]
vector3 = [6, 7, 8, 9]

# 将矢量转换为Pandas的Series对象
series1 = pd.Series(vector1)
series2 = pd.Series(vector2)
series3 = pd.Series(vector3)

# 创建一个空的数据帧
df = pd.DataFrame()

# 将Series对象添加到数据帧中
df['vector1'] = series1
df['vector2'] = series2
df['vector3'] = series3

# 显示数据帧
print(df)

   vector1  vector2  vector3
0        1     4.0        6
1        2     5.0        7
2        3     NaN        8
3      NaN     NaN        9