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calculating from a file

Discussion in 'Python' started by trade19, Apr 5, 2014.

  1. trade19

    trade19 New Member

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    HI I want to ask how I can open a file like this one:
    and add together each line (each time the program runs it could add more lines) amount of lines could change below are six.
    I want to get a total from these
    below would be $28.00 The floats would always be .00
    I think these are integer amounts
    I am not sure rite now why the program is putting out $0.00 but never mind that.
    thanks for any help

    Code:
    $0.00 
    $10.00 
    $0.00 
    $10.00 
    $0.00 
    $8.00 
    
    
    totals= open("C:\\write_it.txt", "r")
    totals.read(totalc)
    Label(aApp,text= "You purchased: $%.2f \n" %  totalc, font=('times', 10, 'bold')).grid(row=0,column=0)
    print('total-c', totalc)
    totals.close()
     
  2. trade19

    trade19 New Member

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    also this is how i fed the file

    Code:
    totals = open("C:\\write_it.txt", "a")
    totals.write('$%.2f \n'  % totalc)
    print('This is total-C', totalc)
    totals.close()
    print('total',total,'total b',totalb,'total-c',totalc)
     

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