col2.append[float(i[1])] col3.append[float(i[2])] col4.append[float(i[3])] except: pass min1= np.min(col1) min2= np.min(col2) min3= np.min(col3) min4= np.min(col4) max1= np.max(col1) max2= np.max(col2) max3= np.max(col3) max4= np.max(col4) for line in data: if __name__== '__main__': print("Hello main method") my_square = Square() my_square.setSize(6) print("square surface: " + str(my_square.getSurface())) load_csv()