diff --git a/release/remote_build.py b/release/remote_build.py
index 1dc430c622..1bd7ada0fa 100755
--- a/release/remote_build.py
+++ b/release/remote_build.py
@@ -46,7 +46,7 @@ def start_build(name):
   conn.send("echo \"git took $SECONDS seconds\"\n")
 
   push = "PUSH=master-ci" if branch == "master" else ""
-  comma_jwt = "COMMA_JWT=" + os.getenv('COMMA_JWT', '')
+  #comma_jwt = "COMMA_JWT=" + os.getenv('COMMA_JWT', '')
 
   conn.send("%s /data/openpilot_source/release/build_devel.sh\n" % push)
   conn.send('echo "RESULT:" $?\n')
diff --git a/scripts/get_fan_control_type.py b/scripts/get_fan_control_type.py
index d98f605666..da43596183 100755
--- a/scripts/get_fan_control_type.py
+++ b/scripts/get_fan_control_type.py
@@ -12,11 +12,12 @@ def setup_fan():
     bus.write_byte_data(0x21, 0x02, 0x2)   # needed?
     bus.write_byte_data(0x21, 0x04, 0x4)   # manual override source
     print("OP detected")
-    return False
+    ret = False
   except IOError:
     print("LEON detected")
-    return True
+    ret = True
   bus.close()
+  return ret
 
 def get_fan_type():
   if not setup_fan():
@@ -27,7 +28,7 @@ def get_fan_type():
     # alternate type
     bus.write_i2c_block_data(0x3d, 0, [0x1])
     print("Alternate type detected")
-    return 
+    return
   except IOError:
     # tusb320 type
     print("tusb320 type detected")
diff --git a/selfdrive/car/mock/interface.py b/selfdrive/car/mock/interface.py
index 3c97fb30fb..69b3862df4 100755
--- a/selfdrive/car/mock/interface.py
+++ b/selfdrive/car/mock/interface.py
@@ -15,8 +15,7 @@ LPG = 2 * 3.1415 * YAW_FR * TS / (1 + 2 * 3.1415 * YAW_FR * TS)
 
 class CarInterface(CarInterfaceBase):
   def __init__(self, CP, CarController, CarState):
-    self.CP = CP
-    self.CC = CarController
+    super().__init__(CP, CarController, CarState)
 
     cloudlog.debug("Using Mock Car Interface")
 
diff --git a/selfdrive/debug/show_matching_cars.py b/selfdrive/debug/show_matching_cars.py
index 273ae1469b..81dff1f060 100755
--- a/selfdrive/debug/show_matching_cars.py
+++ b/selfdrive/debug/show_matching_cars.py
@@ -3,12 +3,6 @@ from selfdrive.car.fingerprints import eliminate_incompatible_cars, all_known_ca
 import cereal.messaging as messaging
 
 
-# Prius and Leuxs es 300H
-fingerprint = {898: 8, 905: 8, 810: 2, 1552: 8, 1553: 8, 1556: 8, 1557: 8, 921: 8, 800: 8, 944: 8, 1570: 8, 1059: 1, 36: 8, 37: 8, 550: 8, 295: 8, 296: 8, 170: 8, 1071: 8, 560: 7, 945: 8, 562: 6, 180: 8, 1077: 8, 950: 8, 951: 8, 953: 8, 1595: 8, 1084: 8, 829: 2, 1086: 8, 1568: 8, 452: 8, 581: 5, 1057: 8, 713: 8, 971: 7, 975: 5, 1571: 8, 466: 8, 467: 8, 1572: 8, 1114: 8, 933: 8, 863: 8, 608: 8, 993: 8, 610: 8, 955: 8, 166: 8, 1056: 8, 956: 8, 1132: 8, 1085: 8, 552: 4, 1779: 8, 1017: 8, 1020: 8, 426: 6, 1279: 8}
-
-# rav4 2019 and corolla tss2
-fingerprint = {896: 8, 898: 8, 976: 1, 1541: 8, 905: 8, 1164: 8, 1165: 8, 1166: 8, 1167: 8, 1552: 8, 1553: 8, 1556: 8, 921: 8, 1056: 8, 544: 4, 1570: 8, 1059: 1, 36: 8, 37: 8, 550: 8, 552: 4, 170: 8, 812: 8, 944: 8, 945: 8, 562: 6, 180: 8, 1077: 8, 951: 8, 824: 8, 1076: 8, 186: 4, 955: 8, 956: 8, 705: 8, 452: 8, 1592: 8, 464: 8, 1571: 8, 466: 8, 467: 8, 761: 8, 728: 8, 1572: 8, 1114: 8, 933: 8, 800: 8, 608: 8, 865: 8, 610: 8, 1595: 8, 1745: 8, 764: 8, 1002: 8, 1649: 8, 1779: 8, 1568: 8, 1017: 8, 1279: 8, 1020: 8, 810: 2, 426: 6}
-
 # rav4 2019 and corolla tss2
 fingerprint = {896: 8, 898: 8, 900: 6, 976: 1, 1541: 8, 902: 6, 905: 8, 810: 2, 1164: 8, 1165: 8, 1166: 8, 1167: 8, 1552: 8, 1553: 8, 1556: 8, 1571: 8, 921: 8, 1056: 8, 544: 4, 1570: 8, 1059: 1, 36: 8, 37: 8, 550: 8, 935: 8, 552: 4, 170: 8, 812: 8, 944: 8, 945: 8, 562: 6, 180: 8, 1077: 8, 951: 8, 1592: 8, 1076: 8, 186: 4, 955: 8, 956: 8, 1001: 8, 705: 8, 452: 8, 1788: 8, 464: 8, 824: 8, 466: 8, 467: 8, 761: 8, 728: 8, 1572: 8, 1114: 8, 933: 8, 800: 8, 608: 8, 865: 8, 610: 8, 1595: 8, 934: 8, 998: 5, 1745: 8, 1000: 8, 764: 8, 1002: 8, 999: 7, 1789: 8, 1649: 8, 1779: 8, 1568: 8, 1017: 8, 1786: 8, 1787: 8, 1020: 8, 426: 6, 1279: 8}
 
diff --git a/selfdrive/locationd/ubloxd_test.cc b/selfdrive/locationd/ubloxd_test.cc
index 68fe6351ea..ec65577f2a 100644
--- a/selfdrive/locationd/ubloxd_test.cc
+++ b/selfdrive/locationd/ubloxd_test.cc
@@ -30,13 +30,13 @@
 using namespace ublox;
 extern volatile sig_atomic_t do_exit;
 
-void write_file(std::string fpath, uint8_t *data, int len) {
+void write_file(std::string fpath, uint8_t *to_write, int len) {
   FILE* f = fopen(fpath.c_str(), "wb");
   if (!f) {
     std::cout << "Open " << fpath << " failed" << std::endl;
     return;
   }
-  fwrite(data, len, 1, f);
+  fwrite(to_write, len, 1, f);
   fclose(f);
 }
 
@@ -72,11 +72,11 @@ Message * poll_ubloxraw_msg(Poller * poller) {
   }
 }
 
-int send_gps_event(PubSocket *s, const void *buf, size_t len) {
+int send_gps_event(PubSocket *s, const void *buf, size_t length) {
   assert(s);
-  write_file(prefix + "/" + std::to_string(save_idx), (uint8_t *)buf, len);
+  write_file(prefix + "/" + std::to_string(save_idx), (uint8_t *)buf, length);
   save_idx++;
-  return len;
+  return length;
 }
 
 int main(int argc, char** argv) {
diff --git a/tools/carcontrols/debug_controls.py b/tools/carcontrols/debug_controls.py
index afb02a09a5..7d13a0b76b 100755
--- a/tools/carcontrols/debug_controls.py
+++ b/tools/carcontrols/debug_controls.py
@@ -64,11 +64,7 @@ def steer_thread():
       #print "enable", enabled, "steer", actuators.steer, "accel", actuators.gas - actuators.brake
 
       hud_alert = 0
-      audible_alert = 0
-      if joystick.testJoystick.buttons[2]:
-        audible_alert = "beepSingle"
       if joystick.testJoystick.buttons[3]:
-        audible_alert = "chimeRepeated"
         hud_alert = "steerRequired"
 
     CC.actuators.gas = actuators.gas
diff --git a/tools/replay/ui.py b/tools/replay/ui.py
index 61f01dc4e2..2a91c1b55b 100755
--- a/tools/replay/ui.py
+++ b/tools/replay/ui.py
@@ -111,7 +111,6 @@ def ui_thread(addr, frame_address):
 
   draw_plots = init_plots(plot_arr, name_to_arr_idx, plot_xlims, plot_ylims, plot_names, plot_colors, plot_styles, bigplots=True)
 
-  counter = 0
   while 1:
     list(pygame.event.get())
 
diff --git a/tools/replay/unlogger.py b/tools/replay/unlogger.py
index 52294c5550..920d9d0b34 100755
--- a/tools/replay/unlogger.py
+++ b/tools/replay/unlogger.py
@@ -438,6 +438,7 @@ def main(argv):
         except TimeoutError:
           p.terminate()
           continue
+  return 0
 
 if __name__ == "__main__":
   sys.exit(main(sys.argv[1:]))
diff --git a/tools/sim/lib/can.py b/tools/sim/lib/can.py
index 867a8447e7..3a3890ba13 100755
--- a/tools/sim/lib/can.py
+++ b/tools/sim/lib/can.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 import cereal.messaging as messaging
-from opendbc.can.parser import CANParser
+#from opendbc.can.parser import CANParser
 from opendbc.can.packer import CANPacker
 from selfdrive.boardd.boardd_api_impl import can_list_to_can_capnp
 from selfdrive.car.honda.values import FINGERPRINTS, CAR
diff --git a/tools/sim/lib/helpers.py b/tools/sim/lib/helpers.py
index 2156e7bc4a..104d5e3633 100644
--- a/tools/sim/lib/helpers.py
+++ b/tools/sim/lib/helpers.py
@@ -1,5 +1,3 @@
-import numpy as np
-
 class FakeSteeringWheel():
   def __init__(self, dt=0.01):
     # physical params
@@ -13,7 +11,7 @@ class FakeSteeringWheel():
 
     self.angle = 0. # start centered
     # self.omega = 0.
-    
+
   def response(self, torque, vego=0):
     exerted_torque = torque * self.DAC
     # centering_torque = np.clip(-(self.centering_k * self.angle), -1.1, 1.1)