QuantEcon · mmcky · Jan 2, 2019 · Dec 20, 2018 · Dec 20, 2018 · Dec 20, 2018
diff --git a/.travis.yml b/.travis.yml
@@ -41,11 +41,12 @@ branches:
     - master
 
 install:
-  - pip install -U pip nose coveralls coverage numpy scipy pandas numba sympy ipython statsmodels
+  - pip install -U pip nose coveralls coverage numpy scipy pandas numba sympy ipython statsmodels flake8
   - pip install tables
   - python setup.py install
 
 script:
+  - flake8 --select F401 quantecon
   - nosetests --with-coverage -a "!slow" --cover-package=quantecon
 
 after_success:

diff --git a/quantecon/__init__.py b/quantecon/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 Import the main names to top level.
 """

diff --git a/quantecon/arma.py b/quantecon/arma.py
@@ -5,7 +5,7 @@
 
 """
 import numpy as np
-from numpy import conj, pi
+from numpy import conj
 from .util import check_random_state
 
 

diff --git a/quantecon/game_theory/__init__.py b/quantecon/game_theory/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 Game Theory SubPackage
 

diff --git a/quantecon/game_theory/game_generators/__init__.py b/quantecon/game_theory/game_generators/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 game_theory.game_generators
 

diff --git a/quantecon/game_theory/tests/test_repeated_game.py b/quantecon/game_theory/tests/test_repeated_game.py
@@ -4,7 +4,7 @@
 """
 import numpy as np
 from numpy.testing import assert_allclose
-from quantecon.game_theory import Player, NormalFormGame, RepeatedGame
+from quantecon.game_theory import NormalFormGame, RepeatedGame
 
 
 class TestAS():

diff --git a/quantecon/markov/__init__.py b/quantecon/markov/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 Markov Chain SubPackge API
 """

diff --git a/quantecon/markov/random.py b/quantecon/markov/random.py
@@ -4,7 +4,6 @@
 """
 import numpy as np
 import scipy.sparse
-from numba import jit
 
 from .core import MarkovChain
 from .ddp import DiscreteDP

diff --git a/quantecon/markov/tests/test_approximation.py b/quantecon/markov/tests/test_approximation.py
@@ -3,10 +3,8 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
-from numpy.testing import assert_allclose
 from quantecon.markov import tauchen, rouwenhorst
 #from quantecon.markov.approximation import rouwenhorst
 

diff --git a/quantecon/markov/tests/test_random.py b/quantecon/markov/tests/test_random.py
@@ -6,7 +6,7 @@
 from numpy.testing import (
     assert_array_equal, assert_raises, assert_array_almost_equal_nulp
 )
-from nose.tools import eq_, ok_, raises
+from nose.tools import eq_, ok_
 
 from quantecon.markov import (
     random_markov_chain, random_stochastic_matrix, random_discrete_dp

diff --git a/quantecon/optimize/__init__.py b/quantecon/optimize/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 Initialization of the optimize subpackage
 """

diff --git a/quantecon/optimize/scalar_maximization.py b/quantecon/optimize/scalar_maximization.py
@@ -1,5 +1,5 @@
 import numpy as np
-from numba import jit, njit
+from numba import njit
 
 @njit
 def brent_max(func, a, b, args=(), xtol=1e-5, maxiter=500):

diff --git a/quantecon/random/__init__.py b/quantecon/random/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 Random SubPackage
 =================

diff --git a/quantecon/tests/__init__.py b/quantecon/tests/__init__.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 """
 namespace for quantecon.tests
 

diff --git a/quantecon/tests/test_arma.py b/quantecon/tests/test_arma.py
@@ -4,7 +4,6 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
 from numpy.testing import assert_array_equal

diff --git a/quantecon/tests/test_dle.py b/quantecon/tests/test_dle.py
@@ -3,12 +3,9 @@
 """
 
 import sys
-import os
 import unittest
 import numpy as np
-from scipy.linalg import LinAlgError
 from numpy.testing import assert_allclose
-from numpy import dot
 from quantecon.dle import DLE
 
 ATOL = 1e-10

diff --git a/quantecon/tests/test_filter.py b/quantecon/tests/test_filter.py
@@ -4,9 +4,7 @@
 
 """
 
-import sys
 import os
-import unittest
 import pandas as pd
 import numpy as np
 from numpy.testing import assert_allclose

diff --git a/quantecon/tests/test_gridtools.py b/quantecon/tests/test_gridtools.py
@@ -73,7 +73,6 @@ def test_performance_C():
     # print(prod.shape)
 
     # compute the same produce using numpy:
-    import numpy
 
     t3 = time.time()
     for i in range(100):
@@ -108,7 +107,6 @@ def test_performance_F():
     # print(prod.shape)
 
     # compute the same produce using numpy:
-    import numpy
 
     t3 = time.time()
     for i in range(100):

diff --git a/quantecon/tests/test_kalman.py b/quantecon/tests/test_kalman.py
@@ -3,7 +3,6 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
 from numpy.testing import assert_allclose

diff --git a/quantecon/tests/test_lqcontrol.py b/quantecon/tests/test_lqcontrol.py
@@ -3,10 +3,8 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
-from scipy.linalg import LinAlgError
 from numpy.testing import assert_allclose
 from numpy import dot
 from quantecon.lqcontrol import LQ

diff --git a/quantecon/tests/test_lqnash.py b/quantecon/tests/test_lqnash.py
@@ -3,7 +3,6 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
 from numpy.testing import assert_allclose

diff --git a/quantecon/tests/test_lss.py b/quantecon/tests/test_lss.py
@@ -3,7 +3,6 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
 from numpy.testing import assert_allclose

diff --git a/quantecon/tests/test_matrix_eqn.py b/quantecon/tests/test_matrix_eqn.py
@@ -2,12 +2,8 @@
 Tests for quantecon.util
 
 """
-from collections import Counter
-import unittest
 import numpy as np
 from numpy.testing import assert_allclose
-from nose.plugins.attrib import attr
-import pandas as pd
 from quantecon import matrix_eqn as qme
 
 

diff --git a/quantecon/tests/test_quadsum.py b/quantecon/tests/test_quadsum.py
@@ -2,9 +2,6 @@
 Tests for quadsums.py
 
 """
-import sys
-import os
-import unittest
 import numpy as np
 from numpy.testing import assert_allclose
 from quantecon.quadsums import var_quadratic_sum, m_quadratic_sum
@@ -63,4 +60,4 @@ def test_m_matsum():
     test_simplesum()
     test_identitysum()
     test_m_simplesum()
-    test_m_identitysum
+    test_m_identitysum
diff --git a/quantecon/tests/test_rank_nullspace.py b/quantecon/tests/test_rank_nullspace.py
@@ -3,11 +3,9 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
 from numpy.linalg import matrix_rank as np_rank
-from numpy.testing import assert_allclose
 from quantecon.rank_nullspace import rank_est, nullspace
 
 

diff --git a/quantecon/tests/test_robustlq.py b/quantecon/tests/test_robustlq.py
@@ -3,10 +3,8 @@
 
 """
 import sys
-import os
 import unittest
 import numpy as np
-from scipy.linalg import LinAlgError
 from numpy.testing import assert_allclose
 from quantecon.lqcontrol import LQ
 from quantecon.robustlq import RBLQ

diff --git a/quantecon/util/__init__.py b/quantecon/util/__init__.py
@@ -1,8 +1,9 @@
+# flake8: noqa
 """
 API for QuantEcon Utilities
 """
 
 from .array import searchsorted
 from .notebooks import fetch_nb_dependencies
 from .random import check_random_state
-from .timing import tic, tac, toc, loop_timer
+from .timing import tic, tac, toc, loop_timer
diff --git a/quantecon/util/array.py b/quantecon/util/array.py
@@ -8,7 +8,6 @@
 
 """
 
-import numpy as np
 from numba import jit
 
 # ----------------- #

diff --git a/quantecon/util/notebooks.py b/quantecon/util/notebooks.py
@@ -20,7 +20,6 @@
 """
 
 import os
-import warnings
 
 #-Remote Structure-#
 REPO = "https://github.com/QuantEcon/QuantEcon.notebooks"

diff --git a/quantecon/util/tests/test_timing.py b/quantecon/util/tests/test_timing.py
@@ -6,7 +6,7 @@
 import time
 from sys import platform
 from numpy.testing import assert_allclose
-from nose.tools import eq_, ok_
+from nose.tools import ok_
 from quantecon.util import tic, tac, toc, loop_timer
-Original file line number
+Diff line change
@@ Expand Up / @@ -8,7 +8,6 @@ @@
     """
-    import numpy as np
     from numba import jit
     # ----------------- #
@@ Expand Down @@