Python -subtraction of value within a list
list, nested-lists, python
Solution
Try the following:
x3 = [((x - 1) if x != 10.5 else x) for x in x2]
Problem
I'm new to Python and I'm having difficulties with lists. I wish to subtract 1 from all the values within the list except for values 10.5. The code below gives an error that the x3 list assignment index is out of range. The code so far: ``` x2=[10.5, -6.36, 11.56, 19.06, -4.37, 26.56, 9.38, -33.12, -8.44, 0.31, -13.44, - 6.25, -13.44, -0.94, -0.94, 19.06, 0.31, -5.94, -13.75, -23.44, -51.68, 10.5] x3=[] i=0 while (i<22): if x2[i]==10.5: x3[i]=x2[i] else: x3[i]=x2[i]-1 break #The result I want to achieve is: #x3=[10.5, -7.36, 10.56, 18.06, -5.37, 25.56, 8.38, -34.12, -9.44, -1.31, -14.44, -7.25, -14.44, -1.94, -1.94, 18.06, -1.31, -6.94, -14.75, -24.44, -52.68, 10.5] ```