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How to define conditionaly two vector from one

asked 2020-06-08 00:20:04 +0100

Cyrille gravatar image

I want to construct two vectors from one according to a condition.

zouzou=[random() for _ in range(0,10)]
def conds(x,a) :
    if x > a : 
        return x
    else :  
        return 0
def condi(x,a) :
    if x <= a : 
        return x
    else :  
        return 0

when I try


I have no problems but when I use one or the other function to create a vector as in

zouzous=[conds(zouzou[_],.5) if _ in range(0,10)]

Sage return a syntax error.

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answered 2020-06-08 00:22:49 +0100

tmonteil gravatar image

updated 2020-06-08 00:23:28 +0100

You should replace:

[conds(zouzou[_],.5) if _ in range(0,10)]


[conds(zouzou[_],.5) for _ in range(0,10)]
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Thanks sorry to be so long to understand how to program. I have also found that

zouzous=[conds(x,.5) for x in zouzou] works.

Cyrille gravatar imageCyrille ( 2020-06-08 08:02:58 +0100 )edit

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Asked: 2020-06-08 00:20:04 +0100

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Last updated: Jun 08 '20