diff --git a/examples/extra_models_examples/stdp_triplet.py b/examples/extra_models_examples/stdp_triplet.py
index 3d3eaac2..4505dbd3 100644
--- a/examples/extra_models_examples/stdp_triplet.py
+++ b/examples/extra_models_examples/stdp_triplet.py
@@ -152,17 +152,18 @@ def generate_fixed_frequency_test_data(
                 size="xx-large")
 
 line_styles = ["--", "-"]
-for m_w, d_w, d_e, l, t in zip(weights, data_w, data_e, line_styles, delta_t):
+for m_w, d_w, d_e, line_style, t in zip(
+        weights, data_w, data_e, line_styles, delta_t):
     # Calculate deltas from end weights
     delta_w = [(w - start_w) / start_w for w in m_w]
 
     # Plot experimental data and error bars
     axis.errorbar(
-        frequencies, d_w, yerr=d_e, color="black", linestyle=l,
+        frequencies, d_w, yerr=d_e, color="black", linestyle=line_style,
         label=r"Experimental data, delta $(\Delta{t}=%dms)$" % t)
 
     # Plot model data
-    axis.plot(frequencies, delta_w, color="blue", linestyle=l,
+    axis.plot(frequencies, delta_w, color="blue", linestyle=line_style,
               label=r"Triplet rule, delta $(\Delta{t}=%dms)$" % t)
 
 axis.legend(loc="upper right", bbox_to_anchor=(1.0, 1.0))
diff --git a/pendulum/spike_filter.py b/pendulum/spike_filter.py
index 0f0e616d..5bf35a5a 100644
--- a/pendulum/spike_filter.py
+++ b/pendulum/spike_filter.py
@@ -69,7 +69,7 @@ def send_spikes(width, height, min_x, min_y, run_time, label, connection):
     start_time = None
     max_x = min_x + width
     max_y = min_y + height
-    y_shift = get_n_bits(width)
+    y_shift = get_n_bits(width)  #noqa 841
     with open("spikes.csv") as f:
         first_time = -1
         line = read_csv_line(f)
@@ -85,9 +85,9 @@ def send_spikes(width, height, min_x, min_y, run_time, label, connection):
             line = next_line
 
             filtered_lines = [
-                l for l in same_time_lines
-                if (l.x >= min_x and l.x < max_x and l.y >= min_y and
-                    l.y < max_y)]
+                line for line in same_time_lines
+                if (line.x >= min_x and line.x < max_x and line.y >= min_y and
+                    line.y < max_y)]
 
             if not filtered_lines:
                 continue
diff --git a/spiNNaker_start/spinnaker_start.py b/spiNNaker_start/spinnaker_start.py
index 2b650e4b..aac8e508 100644
--- a/spiNNaker_start/spinnaker_start.py
+++ b/spiNNaker_start/spinnaker_start.py
@@ -52,7 +52,7 @@
 from spinn_utilities.overrides import overrides
 
 from spinnman.config_setup import unittest_setup
-from spinnman.spalloc import SpallocClient, SpallocState
+from spinnman.spalloc import SpallocClient
 from spinn_utilities.config_holder import set_config
 
 from spinn_machine.machine import Machine