Multiplying floats in python -

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In my Python Code I search for a specific format that floats again, i.e. 

 . (Data ',' P '): Float (Data Enhanced [6]),' PE ': Float {Data ID: Int (Datinigud [0],' MIDx ': Int (Data Enabled [2]) - 1, Phase ': float (Datinugud [8]),' E ': Float (Datinugud [9]),' M ': Float (Datinagad [10])}

I want to do some line 

  'Pt.': Math.sqrt (float (datinigud [6] * data enzad [6]) + float (datainjud [7] * data engine [7]))

but this returns 

  'Pt.': Math.sqrt (float (dataynge [6] * data engined [6]) + Flow T (DataINgood [7] * DataIngeud [7])}} Type Error: 'str'

Can not multiply the sequence by non-intittance of any kind?

thanks

Because dataINGood is a String list . You must change the values ​​in float : 

 : 'pt': math.sqrt (float Data Engine [6]) * Float (DataInd [[6]) + Float (Dataindex [7]) * Float (Dataindex [7])

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