I want solution by python. I need code of a and b and c . This problem from book "intro python for science"

4. In the section Example: linear least squares fitting we showed that the best fit of a line y ir to a set of data (ri,yi) is obtained for the values of a and b given by Eq. (7.10) Those formulas were obtained by finding the values of a and bthat minimized the sum in Eq. (7.5) This approach and these formulas are valid when the uncertainties in the data are the same for all data points. The Python function LineFit (x, y) in the section Example: linear least squares filing implements (a) Write a new fitting function LineFitWt (x, y) that implements the for mulas given in Eq. (7.14) that minimize the function give by Eq. (.12) This more general approach is valid when the individual data points have dif- 4. In the section Example: linear least squares fitting we showed that the best fit of a line y ir to a set of data (ri,yi) is obtained for the values of a and b given by Eq. (7.10) Those formulas were obtained by finding the values of a and bthat minimized the sum in Eq. (7.5) This approach and these formulas are valid when the uncertainties in the data are the same for all data points. The Python function LineFit (x, y) in the section Example: linear least squares filing implements (a) Write a new fitting function LineFitWt (x, y) that implements the for mulas given in Eq. (7.14) that minimize the function give by Eq. (.12) This more general approach is valid when the individual data points have dif