fix pylint issues

Author: FoamyGuy

examples/lis2mdl_calibrate.py

@@ -11,6 +11,7 @@
 # calibration for magnetometer X (min, max), Y and Z
 hardiron_calibration = [[1000, -1000], [1000, -1000], [1000, -1000]]
 
+
 def calibrate():
     start_time = time.monotonic()
 
@@ -24,6 +25,7 @@ def calibrate():
     print("Calibration complete:")
     print("hardiron_calibration =", hardiron_calibration)
 
+
 print("Prepare to calibrate! Twist the magnetometer around in 3D in...")
 print("3...")
 time.sleep(1)

examples/lis2mdl_compass.py

@@ -13,11 +13,12 @@
 # these values are in uT and are in X, Y, Z order (min and max values)
 hardiron_calibration = [[-61.4879, 34.4782], [-43.6714, 53.5662], [-40.7337, 52.4554]]
 
+
 # This will take the magnetometer values, adjust them with the calibraitons
 # and return a new array with the XYZ values ranging from -100 to 100
-def normalize(magvals):
+def normalize(_magvals):
     ret = [0, 0, 0]
-    for i, axis in enumerate(magvals):
+    for i, axis in enumerate(_magvals):
         minv, maxv = hardiron_calibration[i]
         axis = min(max(minv, axis), maxv)  # keep within min/max calibration
         ret[i] =(axis - minv) * 200 / (maxv - minv) + -100
@@ -36,4 +37,4 @@ def normalize(magvals):
     compass_heading += 180
 
     print("Heading:", compass_heading)
-    time.sleep(0.1)
+    time.sleep(0.1)