[英]how to compare and merge two list according to its sequence in python?
Let say i have two lists that is intended to be merged:假设我有两个要合并的列表:
a=[0.1,0.2,'-','-',0.3]
b=['-','-',0.4,0.5,'-']
how to merge a and b to its current position to be like this?如何将 a 和 b 合并到其当前的 position 成为这样?
c=[0.1,0.2,0.4,0.5,0.3]
thanks谢谢
Assuming either a or b has a float for a given position.假设 a 或 b 对于给定的 position 具有浮点数。
One possibility:一种可能:
c = [x if isinstance(x, float) else y for x,y in zip(a,b)]
output: [0.1, 0.2, 0.4, 0.5, 0.3]
output:
[0.1, 0.2, 0.4, 0.5, 0.3]
pd.Series(a).replace('-', pd.NA).fillna(pd.Series(b))
output: output:
0 0.1
1 0.2
2 0.4
3 0.5
4 0.3
dtype: float64
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