diff --git a/src/quafu/circuits/qreg.py b/src/quafu/circuits/quantum_register.py
similarity index 85%
rename from src/quafu/circuits/qreg.py
rename to src/quafu/circuits/quantum_register.py
index dc8b2ae..cc7d458 100644
--- a/src/quafu/circuits/qreg.py
+++ b/src/quafu/circuits/quantum_register.py
@@ -63,18 +63,3 @@ def __add__(self, other: 'QuantumRegister'):
 
     def exchange(self, p1, p2):
         pass
-
-
-if __name__ == '__main__':
-    # q0 = Qubit(0)
-    # q1 = Qubit(1)
-    # reg = {q.pos: q for q in [q0, q1]}
-    # print(reg)
-    #
-    # reg[0], reg[1] = reg[1], reg[0]
-    # reg[0].pos, reg[1].pos = reg[1].pos, reg[0].pos
-    #
-    # print(reg)
-    # print([q0.pos, q1.pos])
-    reg = QuantumRegister(4, name='reg')
-    print(reg[3])