🎨 final touch on the django and flask example code

docs/django-demo/myechartsite/myfirstvis/views.py

@@ -1,6 +1,11 @@
 from __future__ import unicode_literals
+import math
+
 from django.http import HttpResponse
 from django.template import loader
+from pyecharts import Line3D
+
+from pyecharts.constants import DEFAULT_HOST
 
 
 def index(request):
@@ -8,16 +13,13 @@ def index(request):
     l3d = line3d()
     context = dict(
         myechart=l3d.render_embed(),
-        host="https://chfw.github.io/jupyter-echarts",
+        host=DEFAULT_HOST,
         script_list=l3d.get_js_dependencies()
     )
     return HttpResponse(template.render(context, request))
 
 
 def line3d():
-    from pyecharts import Line3D
-
-    import math
     _data = []
     for t in range(0, 25000):
         _t = t / 1000

docs/flask-examples/server.py

@@ -1,5 +1,6 @@
 import random
 from pyecharts import Scatter3D
+from pyecharts.constants import DEFAULT_HOST
 from flask import Flask, render_template
 
 
@@ -9,10 +10,9 @@ app = Flask(__name__)
 @app.route("/")
 def hello():
     s3d = scatter3d()
-    script_host = "https://chfw.github.io/jupyter-echarts"
     return render_template('pyecharts.html',
                            myechart=s3d.render_embed(),
-                           host=script_host,
+                           host=DEFAULT_HOST,
                            script_list=s3d.get_js_dependencies())
 
 
@@ -23,7 +23,7 @@ def scatter3d():
         '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026']
     scatter3D = Scatter3D("3D scattering plot demo", width=1200, height=600)
     scatter3D.add("", data, is_visualmap=True, visual_range_color=range_color)
-    return scatter3D.render_embed()
+    return scatter3D
 
 
 def generate_3d_random_point():