“Map” a nested list in Python

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自闭症患者
自闭症患者 2021-02-14 05:07

In Python, I am trying to apply an operator to a two layer nested array. For example,

a = [[\'2.3\',\'.2\'],[\'-6.3\',\'0.9\']]
for j in range(2)
    for i in r         


        
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