error detected in usage parsing

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,13 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPep8Inspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="ignoredErrors">
+        <list>
+          <option value="E111" />
+          <option value="E114" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/libs.iml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/libs.iml" filepath="$PROJECT_DIR$/.idea/libs.iml" />
+    </modules>
+  </component>
+</project>

helpers/geometry.py

@@ -0,0 +1,19 @@
+import math
+import numpy as np
+
+
+class Geometry:
+  def __init__(self, delta=0.5):
+    self._delta = delta
+
+  def almost_equal(self, v1, v2):
+    delta = math.sqrt(pow((v1[0]-v2[0]), 2) + pow((v1[1]-v2[1]), 2) + pow((v1[2]-v2[2]), 2))
+    return delta <= self._delta
+
+  @staticmethod
+  def to_points_matrix(points, remove_last=False):
+    rows = points.size//3
+    points = points.reshape(rows, 3)
+    if remove_last:
+      points = np.delete(points, rows-1, 0)
+    return points

physics/physics_feeders/us_new_york_city_physics_parameters.py

@@ -1,5 +1,5 @@
 from physics.physics_feeders.us_base_physics_parameters import UsBasePhysicsParameters
-from physics.physics_feeders.helpers.us_pluto_to_function import PlutoToFunction as Pf
+from physics.physics_feeders.helpers.us_pluto_to_function import UsPlutoToFunction as Pf
 
 
 class UsNewYorkCityPhysicsParameters(UsBasePhysicsParameters):