Fix flake8

.travis.yml

@@ -16,7 +16,7 @@ install:
 - travis_retry pip install -e .
 
 script:
-#  - flake8 --ignore N802,N806,E501 `find . -name \*.py | grep -v setup.py | grep -v version.py | grep -v __init__.py | grep -v /doc/`
+  - flake8 --ignore N802,N806,E501 `find . -name \*.py | grep -v setup.py | grep -v version.py | grep -v __init__.py | grep -v /doc/`
 #  - pytest --pyargs toymir --cov-report term-missing --cov=toymir
   - pytest
 

requirements.txt

@@ -5,3 +5,4 @@ sphinx
 numpydoc
 flake8
 pytest
+

toymir/freq.py

@@ -1,5 +1,5 @@
 import numpy as np
-import seaborn  # trap to make tests fail!
+# import seaborn  # trap to make tests fail!
 
 
 def midi_to_hz(notes):
@@ -38,12 +38,12 @@ def hz_to_midi(frequencies):
     # Oh hey, it's Part 5!  You could uncomment this implementation,
     # and then the tests will pass!
 
-    # less_than_zero = (np.asanyarray(frequencies) <= 0).any()
+    less_than_zero = (np.asanyarray(frequencies) <= 0).any()
 
-    # if less_than_zero:
-    #     raise ValueError('Cannot convert a hz of zero or less to a period.')
+    if less_than_zero:
+        raise ValueError('Cannot convert a hz of zero or less to a period.')
 
-    # return 12 * (np.log2(np.asanyarray(frequencies)) - np.log2(440.0)) + 69
+    return 12 * (np.log2(np.asanyarray(frequencies)) - np.log2(440.0)) + 69
 
 
 def hz_to_period(frequencies):

toymir/tests/test_toymir.py

@@ -18,14 +18,14 @@ def test_midi_to_hz_array():
 # These are the two tests you should uncomment!
 
 
-# def test_hz_to_midi_float():
-#     expected = 69
-#     assert toymir.hz_to_midi(440.0) == expected
+def test_hz_to_midi_float():
+    expected = 69
+    assert toymir.hz_to_midi(440.0) == expected
 
 
-# def test_hz_to_midi_array():
-#     expected = [57, 69, 81]
-#    assert np.allclose(toymir.hz_to_midi([220.0, 440.0, 880.0]), expected)
+def test_hz_to_midi_array():
+    expected = [57, 69, 81]
+    assert np.allclose(toymir.hz_to_midi([220.0, 440.0, 880.0]), expected)
 
 
 # Hello!  You could add the missing test for test_hz_to_midi here!