({'key':['a','b','c'], # a---b---c
'data2': range(3,6)})
df2
.dataframe tbody...({'key':['b','c','d'], # b---c---d
'data3': range(6,9)})
df3
.dataframe tbody...{'key':['a','b','c'], # a---b---c
'data4': range(9,12)})
df4
.dataframe tbody...# 右表df3
df3
.dataframe tbody tr th:only-of-type { vertical-align: middle; } .dataframe tbody tr th { vertical-align: top; } .dataframe thead th { text-align: right