[gpaw-users] ValueError: Array has wrong length: 2 != 10.

[Punit Kumar]

Hello GPAW Users

I am trying to calculate the lattice constant for La2O3 crystal after
reading the tutorial given in ase tutorial page
https://wiki.fysik.dtu.dk/ase/tutorials/lattice_constant.html.

I have modify it accordingly and attached my script file below. When I run
my script I got the following error

Traceback (most recent call last):
  File "la2o3_lattice_parameter_2.py", line 11, in <module>
    la2o3 = bulk('La2O3', 'hcp', a=a0, covera=np.sqrt(8/3))
  File "/home/punit/.local/lib/python2.7/site-packages/ase/build/bulk.py",
line 94, in bulk
    pbc=True)
  File "/home/punit/.local/lib/python2.7/site-packages/ase/atoms.py", line
220, in __init__
    self.new_array('positions', positions, float, (3,))
  File "/home/punit/.local/lib/python2.7/site-packages/ase/atoms.py", line
403, in new_array
    (len(a), len(b)))
ValueError: Array has wrong length: 2 != 10.

Can someone help me in figuring out this error. It will be a great help for
me.

Thank You

Punit
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