re-formatting

04_qkd_2.py

@@ -52,6 +52,32 @@ def measure(qbit):
     return random.choices([0, 1], measure_probability(qbit))[0]
 
 
+def run_qbit_tests():
+    # asserts are sets of tests to check if mathz workz
+
+    # Identity: verify that I|0> == |0> and I|1> == |0>
+    assert np.array_equal(I.dot(_0), _0)
+    assert np.array_equal(I.dot(_1), _1)
+
+    # Pauli X: verify that X|0> == |1> and X|1> == |0>
+    assert np.array_equal(X.dot(_0), _1)
+    assert np.array_equal(X.dot(_1), _0)
+
+    # measure probabilities in sigma_x of |0> and |1>
+    # using allclose since dealing with floats
+    assert np.allclose(measure_probability(_0), (1.0, 0.0))
+    assert np.allclose(measure_probability(_1), (0.0, 1.0))
+
+    # applying Hadamard puts the qbit in orthogonal +/- basis
+    assert np.array_equal(H.dot(_0), _p)
+    assert np.array_equal(H.dot(_1), _m)
+
+    # measure probabilities in sigma_x of |+> and |->
+    # using allclose since dealing with floats
+    assert np.allclose(measure_probability(_p), (0.5, 0.5))
+    assert np.allclose(measure_probability(_m), (0.5, 0.5))
+
+
 def bases_to_classical(qbits):
     """
     Converts a list of qbits to classical bits.
@@ -72,10 +98,8 @@ def unicode_message_to_binary(m):
 def binary_to_unicode_message(list_b):
     """Converts a list of bits to Unicode message"""
     s = ''.join([str(a) for a in list_b])
-    return "".join([chr(int(x, 2)) for x in [s[i:i + 8]
-                                             for i in range(0, len(s), 8)
-                                             ]
-                    ])
+    return "".join([chr(int(x, 2)) for x in
+                    [s[i:i + 8] for i in range(0, len(s), 8)]])
 
 
 def encrypt_message(message, otp):
@@ -97,6 +121,7 @@ def encrypt_message(message, otp):
 
     # XOR the message to be sent
     encrypted_message = [m_b ^ otp_b for m_b, otp_b in zip(binary_message, otp)]
+
     if DEBUG:
         print("Bin msg: {}".format(binary_message))
         print("OTP:     {}".format(otp))
@@ -127,32 +152,6 @@ def decrypt_message(encrypted_bits, otp):
     return _decrypted_msg
 
 
-def run_qbit_tests():
-    # asserts are sets of tests to check if mathz workz
-
-    # Identity: verify that I|0> == |0> and I|1> == |0>
-    assert np.array_equal(I.dot(_0), _0)
-    assert np.array_equal(I.dot(_1), _1)
-
-    # Pauli X: verify that X|0> == |1> and X|1> == |0>
-    assert np.array_equal(X.dot(_0), _1)
-    assert np.array_equal(X.dot(_1), _0)
-
-    # measure probabilities in sigma_x of |0> and |1>
-    # using allclose since dealing with floats
-    assert np.allclose(measure_probability(_0), (1.0, 0.0))
-    assert np.allclose(measure_probability(_1), (0.0, 1.0))
-
-    # applying Hadamard puts the qbit in orthogonal +/- basis
-    assert np.array_equal(H.dot(_0), _p)
-    assert np.array_equal(H.dot(_1), _m)
-
-    # measure probabilities in sigma_x of |+> and |->
-    # using allclose since dealing with floats
-    assert np.allclose(measure_probability(_p), (0.5, 0.5))
-    assert np.allclose(measure_probability(_m), (0.5, 0.5))
-
-
 def qkd():
     """
     # Quantum Key Distribution Algorithm (QKD)