Unhandled exception in thread started by <function wrapper at 0x7f2f82ee3aa0> on Django - django

Question

Unhandled exception occurs while passing function inside models.py in Django (installing by pip install numpy django requests)
I am trying to manipulate face detection api on web using OpenCV, Numpy and Redis.
But i got an exception on passing the fuctions inside the models.py
I am just a newbee on Django framework and Python languages.
Here is my error while running my Django server !
Unhandled exception in thread started by
Traceback (most recent call last):
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/utils/autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run autoreload.raise_last_exception()
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/utils/autoreload.py", line 250, in raise_last_exception
six.reraise(*_exception)
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/utils/autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/init.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models()
File "/home/xyz/.xyz/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models
self.models_module = import_module(models_module_name)
File "/usr/lib/python2.7/importlib/init.py", line 37, in import_module import(name)
File "/home/xyz/PycharmProjects/xyz_project/OpencvWeb/opencv_api/Face_detection/models.py", line 28, in
class LFace:
File "/home/xyz/PycharmProjects/xyz_project/OpencvWeb/opencv_api/Face_detection/models.py", line 29, in LFace
def init(self, faceRect = LRect(), eyes=[], id = 0, mt = 0, vel = LVector(0,0)):
NameError: name 'LRect' is not defined
And Here is my code in models.py
This is the class for LFace
class LFace:
def __init__(self, faceRect = LRect(), eyes=[], id = 0, mt = 0, vel = LVector(0,0)):
self.face = faceRect.clone()
self.eyes = [e.clone() for e in eyes]
self.id = id
self.name = ''
self.missingTicks = mt
self.velocity = vel
def clone(self):
return LFace(self.face, self.eyes, self.id)
def setAs(self, f2):
self.face = f2.face.clone()
self.eyes = [e.clone() for e in f2.eyes]
self.id = f2.id
self.missintTicks = f2.missingTicks
self.velocity = f2.velocity.clone()
def dist(self, f2, scalar1 = 1.0, scalar2 = 0.2):
#distance is defined as: center differences * scalar1 + size differences * scalar2
d1 = self.face.center().dist(f2.face.center())
d2 = self.face.wh().dist(f2.face.wh())
return d1 * scalar1 + d2 * scalar2
def interpolateTo(self, f2, t):
self.face.interpolateTo(f2.face, t)
self.eyes = f2.clone().eyes if t > 0.5 else []
def getPredicted(self):
rv = self.clone()
p = rv.face.center()
oldP = p.clone()
p += self.velocity
rv.velocity = LVector(0,0)
rv.face.setFromCenter(p)
return rv
This is the class for LRect
class LRect:
def __init__(self, x=0, y=0, w=0, h=0):
self.x = x
self.y = y
self.w = w
self.h = h
def pos(self):
return LVector(self.x, self.y)
def wh(self):
return LVector(self.w, self.h)
def hwh(self):
return LVector(self.w, self.h) * 0.5
def center(self):
return (self.pos() + self.hwh())
def toString(self):
return '[x={0},y={1},width={2},height={3}]'.format(*self.toList())
def __str__(self):
return self.toString()
def toList(self):
return [self.x, self.y, self.w, self.h]
def clone(self):
return LRect(self.x, self.y, self.w, self.h)
def setFromCenter(self, centerPoint):
hp = self.hwh()
self.x = centerPoint[0] - hp[0]
self.y = centerPoint[1] - hp[1]
def scaleWH(self, scalar):
# scalar can be either an LVector or a number
c = self.center()
hwh = self.wh() * scalar
self.w, self.h = hwh[0], hwh[1]
self.setFromCenter(c)
def interpolateTo(self, r2, t):
c = self.center()
wh = self.wh()
c.interpolateTo(r2.center(), t)
wh.interpolateTo(r2.wh(), t)
self.w, self.h = wh[0], wh[1]
self.setFromCenter(c)
Please Help !!