Traceback (most recent call last):
  File "c:\miniconda\envs\test\lib\site-packages\jupyter_cache\executors\utils.py", line 51, in single_nb_execution
    executenb(
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\client.py", line 1112, in execute
    return NotebookClient(nb=nb, resources=resources, km=km, **kwargs).execute()
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\util.py", line 74, in wrapped
    return just_run(coro(*args, **kwargs))
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\util.py", line 53, in just_run
    return loop.run_until_complete(coro)
  File "c:\miniconda\envs\test\lib\asyncio\base_events.py", line 616, in run_until_complete
    return future.result()
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\client.py", line 553, in async_execute
    await self.async_execute_cell(
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\client.py", line 857, in async_execute_cell
    self._check_raise_for_error(cell, exec_reply)
  File "c:\miniconda\envs\test\lib\site-packages\nbclient\client.py", line 760, in _check_raise_for_error
    raise CellExecutionError.from_cell_and_msg(cell, exec_reply_content)
nbclient.exceptions.CellExecutionError: An error occurred while executing the following cell:
------------------
import numpy as np
import quantecon as qe

# Parameters
a0 = 10.0
a1 = 2.0
β = 0.96
γ = 12.0

# In LQ form
A = np.eye(3)
B1 = np.array([[0.], [1.], [0.]])
B2 = np.array([[0.], [0.], [1.]])


R1 = [[      0.,     -a0 / 2,          0.],
      [-a0 / 2.,          a1,     a1 / 2.],
      [       0,     a1 / 2.,          0.]]

R2 = [[     0.,           0.,      -a0 / 2],
      [     0.,           0.,      a1 / 2.],
      [-a0 / 2,      a1 / 2.,           a1]]

Q1 = Q2 = γ
S1 = S2 = W1 = W2 = M1 = M2 = 0.0

# Solve using QE's nnash function
F1, F2, P1, P2 = qe.nnash(A, B1, B2, R1, R2, Q1, 
                          Q2, S1, S2, W1, W2, M1, 
                          M2, beta=β)

# Display policies
print("Computed policies for firm 1 and firm 2:\n")
print(f"F1 = {F1}")
print(f"F2 = {F2}")
print("\n")

------------------

  File "<ipython-input-3-4905ebb9ee91>", line 7
    β = 0.96
     ^
SyntaxError: invalid character in identifier

SyntaxError: invalid character in identifier (<ipython-input-3-4905ebb9ee91>, line 7)