Remove useless utility functions

src/qiskit_symb/utils.py

@@ -2,8 +2,7 @@
 
 import random
 from sympy import Symbol, sympify
-from qiskit import QuantumCircuit, transpile
-from .circuit.library import NAME_TO_INIT # pylint: disable=cyclic-import
+from .circuit.library import NAME_TO_INIT
 
 
 def get_init(name):
@@ -19,30 +18,15 @@ def get_symbolic_gates_names():
  return set(NAME_TO_INIT.keys())
 
 
-def flatten_circuit(circuit):
- """todo"""
- qubits, clbits = circuit.num_qubits, circuit.num_clbits
- return QuantumCircuit(qubits, clbits).compose(circuit)
-
-
-def transpile_circuit(circuit):
- """todo"""
- circuit.data = [
- instr for instr in circuit if instr.operation.name not in ['barrier', 'delay']]
- return transpile(circuit, optimization_level=2)
-
-
 def get_symbolic_expr(par_expr):
  """todo"""
- # pylint: disable=protected-access
  if hasattr(par_expr, '_symbol_expr'):
  return sympify(par_expr._symbol_expr)
  return par_expr
 
 
 def get_unique_symbols(par_expr):
  """todo"""
- # pylint: disable=protected-access
  if hasattr(par_expr, '_parameter_symbols'):
  return list(dict.fromkeys([sympify(symb) for symb in par_expr._parameter_symbols.values()]))
  return []
@@ -65,19 +49,3 @@ def get_random_params(params_dict, size, seed=None):
  for parname, parval in zip(parnames, parvals)])
  for parvals in params]
  return params, ids
-
-
-def get_random_controlled(base_gate, seed=None):
- """todo"""
- random.seed(seed)
- num_targets = base_gate.num_qubits
- num_controls = random.randint(1, 2)
- state = random.randint(0, num_controls)
- ctrl_state = format(state, 'b').zfill(num_controls)
- gate = base_gate.control(num_controls, ctrl_state=ctrl_state)
- num_qubits = num_controls + num_targets
- num_wires = random.randint(num_qubits, num_qubits+1)
- qargs = random.sample(range(num_wires), num_qubits)
- circuit = QuantumCircuit(num_wires)
- circuit.append(gate, qargs)
- return circuit