Assign second element in a pair to a vector

Question

Am I making some simple mistake or is this a bug? Trying to assign the first and second element of a pair to separate vectors in Python Numpy, but the second element gets assigned to both vectors in all cases. Desired output: sol[0] identical to pxvec[i].

srange = np.linspace(0, 0.7, 10)
pxvec = srange 
pyvec = srange 
pindex = 0

for i in srange: 
    sol=[i,i+1]
    print(sol[0],sol[1])
    pxvec[pindex]=sol[0]
    pyvec[pindex]=sol[1]
    print(pxvec[pindex],pyvec[pindex])
    pindex=pindex+1

Output I am getting:

0.0 1.0
1.0 1.0
0.07777777777777778 1.0777777777777777
1.0777777777777777 1.0777777777777777
0.15555555555555556 1.1555555555555554
1.1555555555555554 1.1555555555555554
0.23333333333333334 1.2333333333333334
1.2333333333333334 1.2333333333333334
0.3111111111111111 1.3111111111111111
1.3111111111111111 1.3111111111111111
0.3888888888888889 1.3888888888888888
1.3888888888888888 1.3888888888888888
0.4666666666666667 1.4666666666666668
1.4666666666666668 1.4666666666666668
0.5444444444444445 1.5444444444444445
1.5444444444444445 1.5444444444444445
0.6222222222222222 1.6222222222222222
1.6222222222222222 1.6222222222222222
0.7 1.7
1.7 1.7

​

Answer 1

You need to assign pxvecand pyvec to copies of srange, otherwise every change you will make to pxvecwill also be made to pyvecand srange(it's called copy by reference if you want to look this up)

srange = np.linspace(0, 0.7, 10)
pxvec = srange.copy()
pyvec = srange.copy()

And then you can continue with the code you have provided