diff --git a/ogmys/calibrate.py b/ogmys/calibrate.py
index 867644c..a581c65 100644
--- a/ogmys/calibrate.py
+++ b/ogmys/calibrate.py
@@ -22,7 +22,6 @@ def __init__(
         client=None,
         num_workers=1,
     ):
-
         self.estimate_tax_functions = estimate_tax_functions
         self.estimate_beta = estimate_beta
         self.estimate_chi_n = estimate_chi_n
diff --git a/ogmys/income.py b/ogmys/income.py
index c75df9c..e5d9572 100644
--- a/ogmys/income.py
+++ b/ogmys/income.py
@@ -149,9 +149,8 @@ def f(
 
         # Make sure that values in abil_midp are within interpolating
         # bounds
-        if (
-            abil_midp.min() < emat_j_midp.min()
-            or abil_midp.max() > (1- usa_params.lambdas[-1])
+        if abil_midp.min() < emat_j_midp.min() or abil_midp.max() > (
+            1 - usa_params.lambdas[-1]
         ):
             err = (
                 "One or more entries in abilities vector (lambdas) is outside the "
diff --git a/ogmys/tests/test_income.py b/ogmys/tests/test_income.py
index ccbae65..fef5c28 100644
--- a/ogmys/tests/test_income.py
+++ b/ogmys/tests/test_income.py
@@ -41,8 +41,6 @@ def test_get_e_interp_exception():
     Test that RuntimeError is abil_wgts not suitable for interpolation
     """
     age_wgts = np.ones(80) * 1 / 80
-    abil_wgts = np.array(
-        [0.25, 0.25, 0.2, 0.1, 0.1, 0.09, 0.009999, 0.000001]
-    )
+    abil_wgts = np.array([0.25, 0.25, 0.2, 0.1, 0.1, 0.09, 0.009999, 0.000001])
     with pytest.raises(RuntimeError):
         income.get_e_interp(20, 80, 8, abil_wgts, age_wgts)