diff --git a/augur/analyze.py b/augur/analyze.py
index 4d907b7..1d228db 100644
--- a/augur/analyze.py
+++ b/augur/analyze.py
@@ -157,7 +157,7 @@ def get_derivatives(self, force=False, method='5pt_stencil'):
         if (self.derivatives is None) or (force):
             if '5pt_stencil' in method:
                 self.derivatives = five_pt_stencil(lambda y: self.f(y, self.var_pars, self.pars_fid,
-                                                                self.req_params),
+                                                   self.req_params),
                                                    self.x, h=float(self.config['step']))
             elif 'numdifftools' in method:
                 import numdifftools as nd
@@ -166,9 +166,9 @@ def get_derivatives(self, force=False, method='5pt_stencil'):
                 else:
                     ndkwargs = {}
                 self.derivatives = nd.Gradient(lambda y: self.f(y, self.var_pars, self.pars_fid,
-                                                                self.req_params),
-                                                   step=float(self.config['step']),
-                                                   **ndkwargs)(self.x).T
+                                               self.req_params),
+                                               step=float(self.config['step']),
+                                               **ndkwargs)(self.x).T
             else:
                 raise ValueError(f'Selected method: `{method}` is not available. \
                                  Please select 5pt_stencil or numdifftools.')
diff --git a/augur/tests/test_analyze.py b/augur/tests/test_analyze.py
index a6c1e19..c6d1080 100644
--- a/augur/tests/test_analyze.py
+++ b/augur/tests/test_analyze.py
@@ -1,8 +1,8 @@
 from augur.analyze import Analyze
 
+
 def test_analyze():
     fish = Analyze('./examples/config_test.yml')
-    ders = fish.get_derivatives()
-    fishmat = fish.get_fisher_matrix()
-    b_vec = fish.compute_fisher_bias()
-    
\ No newline at end of file
+    fish.get_derivatives()
+    fish.get_fisher_matrix()
+    fish.compute_fisher_bias()
diff --git a/augur/tests/test_generate.py b/augur/tests/test_generate.py
index 258773d..095cfb8 100644
--- a/augur/tests/test_generate.py
+++ b/augur/tests/test_generate.py
@@ -2,4 +2,4 @@
 
 
 def test_generate():
-    lk = generate('./examples/config_test.yml')
\ No newline at end of file
+    generate('./examples/config_test.yml')