diff --git a/.gitignore b/.gitignore
index 78ecd3eb..c15b2627 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,7 @@ bower_components
 
 archive
 env
+myenv
 
 htmlcov
 test_*.html
diff --git a/README.rst b/README.rst
index c7022748..667d5ca5 100644
--- a/README.rst
+++ b/README.rst
@@ -42,8 +42,8 @@ These graphs can be part of your web application:
 Want to try it yourself? Install python-nvd3, enter your python shell and try this quick demo::
 
     >>> from nvd3 import pieChart
-    >>> type = 'pieChart'
-    >>> chart = pieChart(name=type, color_category='category20c', height=450, width=450)
+    >>> chart_name = 'pieChart'
+    >>> chart = pieChart(name=chart_name, color_category='category20c', height=450, width=450)
     >>> xdata = ["Orange", "Banana", "Pear", "Kiwi", "Apple", "Strawberry", "Pineapple"]
     >>> ydata = [3, 4, 0, 1, 5, 7, 3]
     >>> extra_serie = {"tooltip": {"y_start": "", "y_end": " cal"}}
diff --git a/docs/source/includes/introduction.txt b/docs/source/includes/introduction.txt
index 414241ec..a1001bfd 100644
--- a/docs/source/includes/introduction.txt
+++ b/docs/source/includes/introduction.txt
@@ -52,8 +52,8 @@ After installation use python-nvd3 as follows ::
     # Open File to write the D3 Graph
     output_file = open('test-nvd3.html', 'w')
 
-    type = 'pieChart'
-    chart = pieChart(name=type, color_category='category20c', height=450, width=450)
+    chart_name = 'pieChart'
+    chart = pieChart(name=chart_name, color_category='category20c', height=450, width=450)
     chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
     xdata = ["Orange", "Banana", "Pear", "Kiwi", "Apple", "Strawberry", "Pineapple"]
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 2915604c..30f22f45 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -25,8 +25,8 @@ These graphs can be part of your web application:
 Want to try it yourself? Install python-nvd3, enter your python shell and try this quick demo::
 
     >>> from nvd3 import pieChart
-    >>> type = 'pieChart'
-    >>> chart = pieChart(name=type, color_category='category20c', height=450, width=450)
+    >>> chart_name = 'pieChart'
+    >>> chart = pieChart(name=chart_name, color_category='category20c', height=450, width=450)
     >>> xdata = ["Orange", "Banana", "Pear", "Kiwi", "Apple", "Strawberry", "Pineapple"]
     >>> ydata = [3, 4, 0, 1, 5, 7, 3]
     >>> extra_serie = {"tooltip": {"y_start": "", "y_end": " cal"}}
diff --git a/examples/cumulativeLineChart.py b/examples/cumulativeLineChart.py
index d0864fd3..c3ecc444 100644
--- a/examples/cumulativeLineChart.py
+++ b/examples/cumulativeLineChart.py
@@ -21,8 +21,8 @@
 # Open File for test
 output_file = open('test_cumulativeLineChart.html', 'w')
 
-type = "cumulativeLineChart"
-chart = cumulativeLineChart(name=type, height=350, x_is_date=True)
+chart_name = "cumulativeLineChart"
+chart = cumulativeLineChart(name=chart_name, height=350, x_is_date=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
 xdata = list(range(nb_element))
diff --git a/examples/demo_all.py b/examples/demo_all.py
index c2c161b4..175542c7 100644
--- a/examples/demo_all.py
+++ b/examples/demo_all.py
@@ -45,7 +45,7 @@
 
 output_file.write(html_open)
 
-type = "discreteBarChart"
+chart_name = "discreteBarChart"
 chart = discreteBarChart(name='my graphname', height=400, width=800, jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 xdata = ["A", "B", "C", "D", "E", "F", "G"]
@@ -58,8 +58,8 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "pie Chart"
-chart = pieChart(name=type, color_category='category20c', height=400,
+chart_name = "pie Chart"
+chart = pieChart(name=chart_name, color_category='category20c', height=400,
                  width=400, jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
@@ -74,7 +74,7 @@
 # ---------------------------------------
 
 name = "lineChart-different-x-axis"
-type = "lineChart"
+chart_name = "lineChart"
 chart = lineChart(name=name, height=400, width=800, x_is_date=False,
                   jquery_on_ready=True)
 
@@ -98,7 +98,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "lineChart"
+chart_name = "lineChart"
 chart = lineChart(height=400, width=800, x_is_date=True, x_axis_format="%d %b %Y %H",
                   jquery_on_ready=True)
 
@@ -123,7 +123,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "lineChartWithInteractiveGuideline"
+chart_name = "lineChartWithInteractiveGuideline"
 chart = lineChart(name="lineChart-With-Interactive-Guideline",
                   height=400, width=800, x_is_date=True, x_axis_format="%d %b %Y %H",
                   jquery_on_ready=True, use_interactive_guideline=True)
@@ -149,7 +149,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "lineWithFocusChart"
+chart_name = "lineWithFocusChart"
 chart = lineWithFocusChart(color_category='category20b', x_is_date=True,
                            height=400, width=800,
                            x_axis_format="%d %b %Y", jquery_on_ready=True)
@@ -177,7 +177,7 @@
 
 # ---------------------------------------
 
-type = "stackedAreaChart"
+chart_name = "stackedAreaChart"
 chart = stackedAreaChart(height=400, width=800, x_is_date=True,
                          x_axis_format="%d %b %Y %I", jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
@@ -197,7 +197,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "linePlusBarChart"
+chart_name = "linePlusBarChart"
 chart = linePlusBarChart(height=400, width=800, x_is_date=True,
                          x_axis_format="%d %b %Y", jquery_on_ready=True,
                          focus_enable=True)
@@ -219,7 +219,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "cumulativeLineChart"
+chart_name = "cumulativeLineChart"
 chart = cumulativeLineChart(height=400, width=800,
                             x_is_date=True, x_axis_format="%d %b %Y",
                             jquery_on_ready=True)
@@ -240,7 +240,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "multiBarHorizontalChart"
+chart_name = "multiBarHorizontalChart"
 chart = multiBarHorizontalChart(height=400, width=800, jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
@@ -258,7 +258,7 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "multiBarChart"
+chart_name = "multiBarChart"
 chart = multiBarChart(height=400, width=800, jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 nb_element = 10
@@ -275,8 +275,8 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "multiBarChartDate"
-chart = multiBarChart(name=type, height=400, width=800, x_is_date=True, jquery_on_ready=True)
+chart_name = "multiBarChartDate"
+chart = multiBarChart(name=chart_name, height=400, width=800, x_is_date=True, jquery_on_ready=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 nb_element = 100
 start_time = int(time.mktime(datetime.datetime(2012, 6, 1).timetuple()) * 1000)
@@ -297,8 +297,8 @@
 output_file.write(chart.htmlcontent)
 # ---------------------------------------
 
-type = "scatterChart"
-chart = scatterChart(name=type, height=350, width=800, x_is_date=False)
+chart_name = "scatterChart"
+chart = scatterChart(name=chart_name, height=350, width=800, x_is_date=False)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 nb_element = 50
 xdata = [i + random.randint(1, 10) for i in range(nb_element)]
diff --git a/examples/discreteBarChart.py b/examples/discreteBarChart.py
index e8ffa29b..952a4f20 100644
--- a/examples/discreteBarChart.py
+++ b/examples/discreteBarChart.py
@@ -15,7 +15,7 @@
 # Open File for test
 output_file = open('test_discreteBarChart.html', 'w')
 
-type = "discreteBarChart"
+chart_name = "discreteBarChart"
 chart = discreteBarChart(name='mygraphname', height=400, width=600, show_values=True, extras="d3.selectAll('#mygraphname text').style('fill', 'red')")
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 xdata = ["A", "B", "C", "D", "E", "F", "G"]
@@ -33,7 +33,7 @@
 
 output_file = open('test_discreteBarChart2.html', 'w')
 
-type = "discreteBarChart"
+chart_name = "discreteBarChart"
 chart = discreteBarChart(name='mygraphname', height=400, width=600,
                          tooltips=False)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
diff --git a/examples/discreteBarChart_with_date.py b/examples/discreteBarChart_with_date.py
index f8798657..9d6c2fa1 100644
--- a/examples/discreteBarChart_with_date.py
+++ b/examples/discreteBarChart_with_date.py
@@ -18,7 +18,7 @@
 # Open File for test
 output_file = open('test_discreteBarChart_with_date.html', 'w')
 
-type = "discreteBarChart"
+chart_name = "discreteBarChart"
 
 start_time = int(time.mktime(datetime.datetime(2012, 6, 1).timetuple()) * 1000)
 nb_element = 10
@@ -27,7 +27,7 @@
 xdata = [start_time + x * 1000000000 for x in xdata]
 ydata = [i + random.randint(1, 10) for i in range(nb_element)]
 
-chart = discreteBarChart(name=type, height=400, width=600, x_is_date=True, x_axis_format="%d-%b")
+chart = discreteBarChart(name=chart_name, height=400, width=600, x_is_date=True, x_axis_format="%d-%b")
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
 extra_serie = {"tooltip": {"y_start": "", "y_end": " cal"}}
diff --git a/examples/ipythonDemo.ipynb b/examples/ipythonDemo.ipynb
index f2f5dd1c..696dda0f 100644
--- a/examples/ipythonDemo.ipynb
+++ b/examples/ipythonDemo.ipynb
@@ -86,8 +86,8 @@
    },
    "outputs": [],
    "source": [
-    "type = 'stackedAreaChart'\n",
-    "chart2 = nvd3.stackedAreaChart(name=type,height=450,width=500, \n",
+    "chart_name = 'stackedAreaChart'\n",
+    "chart2 = nvd3.stackedAreaChart(name=chart_name,height=450,width=500, \n",
     "                               use_interactive_guideline=True)\n",
     "nb_element = 50\n",
     "xdata = range(nb_element)\n",
@@ -142,8 +142,8 @@
    },
    "outputs": [],
    "source": [
-    "type = 'pieChart'\n",
-    "chart1 = nvd3.pieChart(name=type, color_category='category20c', height=450, width=450)\n",
+    "chart_name = 'pieChart'\n",
+    "chart1 = nvd3.pieChart(name=chart_name, color_category='category20c', height=450, width=450)\n",
     "chart1.set_containerheader(\"\\n\\n<h2>\" + type + \"</h2>\\n\\n\")\n",
     "\n",
     "#Create the keys\n",
diff --git a/examples/lineChart.py b/examples/lineChart.py
index 1dce1b9a..053b7e76 100644
--- a/examples/lineChart.py
+++ b/examples/lineChart.py
@@ -14,8 +14,8 @@
 # Open File for test
 output_file = open('test_lineChart.html', 'w')
 # ---------------------------------------
-type = "lineChart"
-chart = lineChart(name=type, x_is_date=False, x_axis_format="AM_PM")
+chart_name = "lineChart"
+chart = lineChart(name=chart_name, x_is_date=False, x_axis_format="AM_PM")
 
 xdata = list(range(0, 24))
 ydata = [0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 4, 3, 3, 5, 7, 5, 3, 16, 6, 9, 15, 4, 12]
diff --git a/examples/lineChartXY.py b/examples/lineChartXY.py
index f74a1a9a..1e8ae2d8 100644
--- a/examples/lineChartXY.py
+++ b/examples/lineChartXY.py
@@ -14,8 +14,8 @@
 
 output_file = open('test_lineChartXY.html', 'w')
 
-type = "lineChart"
-chart = lineChart(name=type, x_is_date=False,
+chart_name = "lineChart"
+chart = lineChart(name=chart_name, x_is_date=False,
                   x_axis_format=".1f", y_axis_format=".1f",
                   width=500, height=500,
                   show_legend=False)
diff --git a/examples/linePlusBarChart.py b/examples/linePlusBarChart.py
index 3dbeba71..e1d38265 100644
--- a/examples/linePlusBarChart.py
+++ b/examples/linePlusBarChart.py
@@ -20,8 +20,8 @@
 
 
 output_file = open('test_linePlusBarChart.html', 'w')
-type = "linePlusBarChart"
-chart = linePlusBarChart(name=type, height=350, width=750,
+chart_name = "linePlusBarChart"
+chart = linePlusBarChart(name=chart_name, height=350, width=750,
                          x_is_date=True, x_axis_format="%d %b %Y",
                          focus_enable=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
diff --git a/examples/lineWithFocusChart.py b/examples/lineWithFocusChart.py
index 7d765019..8e14f700 100644
--- a/examples/lineWithFocusChart.py
+++ b/examples/lineWithFocusChart.py
@@ -21,8 +21,8 @@
 # Open File for test
 output_file = open('test_lineWithFocusChart.html', 'w')
 # ---------------------------------------
-type = "lineWithFocusChart"
-chart = lineWithFocusChart(name=type, height=550, width=850,
+chart_name = "lineWithFocusChart"
+chart = lineWithFocusChart(name=chart_name, height=550, width=850,
                            color_category='category20b', x_is_date=True,
                            x_axis_format="%d %b %Y %H", focus_enable=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
diff --git a/examples/multiBarChart.py b/examples/multiBarChart.py
index f914a356..96752284 100644
--- a/examples/multiBarChart.py
+++ b/examples/multiBarChart.py
@@ -15,8 +15,8 @@
 # Open File for test
 output_file = open('test_multiBarChart.html', 'w')
 
-type = "multiBarChart"
-chart = multiBarChart(name=type, height=350)
+chart_name = "multiBarChart"
+chart = multiBarChart(name=chart_name, height=350)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 chart.callback = '''
                     function(){
diff --git a/examples/multiBarChart_date.py b/examples/multiBarChart_date.py
index afd5ff02..b1557e0a 100644
--- a/examples/multiBarChart_date.py
+++ b/examples/multiBarChart_date.py
@@ -17,9 +17,9 @@
 # Open File for test
 output_file = open('test_multiBarChart_date.html', 'w')
 
-type = "multiBarChart"
+chart_name = "multiBarChart"
 
-chart = multiBarChart(name=type, height=350, x_is_date=True)
+chart = multiBarChart(name=chart_name, height=350, x_is_date=True)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
 nb_element = 100
diff --git a/examples/multiBarHorizontalChart.py b/examples/multiBarHorizontalChart.py
index c8b5c790..84d2e41e 100644
--- a/examples/multiBarHorizontalChart.py
+++ b/examples/multiBarHorizontalChart.py
@@ -15,8 +15,8 @@
 # Open File for test
 output_file = open('test_multiBarHorizontalChart.html', 'w')
 
-type = "multiBarHorizontalChart"
-chart = multiBarHorizontalChart(name=type, height=350)
+chart_name = "multiBarHorizontalChart"
+chart = multiBarHorizontalChart(name=chart_name, height=350)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 
 nb_element = 10
diff --git a/examples/multiChart.py b/examples/multiChart.py
index 501c2044..f1960e5c 100644
--- a/examples/multiChart.py
+++ b/examples/multiChart.py
@@ -14,8 +14,8 @@
 # Open File for test
 output_file = open('test_multiChart.html', 'w')
 # ---------------------------------------
-type = "multiChart"
-chart = multiChart(name=type, x_is_date=False, x_axis_format="AM_PM")
+chart_name = "multiChart"
+chart = multiChart(name=chart_name, x_is_date=False, x_axis_format="AM_PM")
 
 xdata = [1,2,3,4,5,6]
 ydata = [115.5,160.5,108,145.5,84,70.5]
diff --git a/examples/pieChart.py b/examples/pieChart.py
index 3e208a6b..e192b436 100644
--- a/examples/pieChart.py
+++ b/examples/pieChart.py
@@ -15,8 +15,8 @@
 # Open File for test
 output_file = open('test_pieChart.html', 'w')
 
-type = "pieChart"
-chart = pieChart(name=type, color_category='category20c', height=400, width=400, extras="d3.selectAll('#piechart .nv-slice').style('opacity', 0.5);")
+chart_name = "pieChart"
+chart = pieChart(name=chart_name, color_category='category20c', height=400, width=400, extras="d3.selectAll('#piechart .nv-slice').style('opacity', 0.5);")
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 chart.callback = '''
                     function(){
diff --git a/examples/scatterChart.py b/examples/scatterChart.py
index 51338907..d58d8522 100644
--- a/examples/scatterChart.py
+++ b/examples/scatterChart.py
@@ -15,8 +15,8 @@
 # Open File for test
 output_file = open('test_scatterChart.html', 'w')
 
-type = "scatterChart"
-chart = scatterChart(name=type, height=350, width=800, x_is_date=False)
+chart_name = "scatterChart"
+chart = scatterChart(name=chart_name, height=350, width=800, x_is_date=False)
 chart.set_containerheader("\n\n<h2>" + type + "</h2>\n\n")
 nb_element = 50
 xdata = [i + random.randint(1, 10) for i in range(nb_element)]
diff --git a/nvd3/bulletChart.py b/nvd3/bulletChart.py
index 6805ff07..867c2e1a 100644
--- a/nvd3/bulletChart.py
+++ b/nvd3/bulletChart.py
@@ -22,7 +22,7 @@ class bulletChart(TemplateMixin, NVD3Chart):
     Python example:
 
         from nvd3.bulletChart import bulletChart
-        chart = bulletChart.bulletChart(name=type, height=100, width=500)
+        chart = bulletChart.bulletChart(name=chart_name, height=100, width=500)
         title = 'Revenue',
         subtitle = 'US$, in thousands'
         ranges = [150, 225, 300]
diff --git a/nvd3/multiChart.py b/nvd3/multiChart.py
index f94bb9b5..2880fd82 100644
--- a/nvd3/multiChart.py
+++ b/nvd3/multiChart.py
@@ -20,8 +20,8 @@ class multiChart(TemplateMixin, NVD3Chart):
     Python example::
 
         from nvd3 import multiChart
-        type = "multiChart"
-        chart = multiChart(name=type, x_is_date=False, x_axis_format="AM_PM")
+        chart_name = "multiChart"
+        chart = multiChart(name=chart_name, x_is_date=False, x_axis_format="AM_PM")
 
         xdata = [1,2,3,4,5,6]
         ydata = [115.5,160.5,108,145.5,84,70.5]
diff --git a/tests.py b/tests.py
index 63b73c70..2e7c64fe 100644
--- a/tests.py
+++ b/tests.py
@@ -32,8 +32,8 @@ def test_chartWithBadName(self):
 
     def test_lineWithFocusChart(self):
         """Test Line With Focus Chart"""
-        type = "lineWithFocusChart"
-        chart = lineWithFocusChart(name=type, date=True, height=350)
+        chart_name = "lineWithFocusChart"
+        chart = lineWithFocusChart(name=chart_name, date=True, height=350)
         nb_element = 100
         xdata = list(range(nb_element))
         xdata = [1365026400000 + x * 100000 for x in xdata]
@@ -45,8 +45,8 @@ def test_lineWithFocusChart(self):
 
     def test_lineChart(self):
         """Test Line Chart"""
-        type = "lineChart"
-        chart = lineChart(name=type, date=True, height=350)
+        chart_name = "lineChart"
+        chart = lineChart(name=chart_name, date=True, height=350)
         nb_element = 100
         xdata = list(range(nb_element))
         xdata = [1365026400000 + x * 100000 for x in xdata]
@@ -61,8 +61,8 @@ def test_lineChart(self):
 
     def test_lineChart_tooltip(self):
         """Test Line Chart"""
-        type = "lineChart"
-        chart = lineChart(name=type, date=True, height=350)
+        chart_name = "lineChart"
+        chart = lineChart(name=chart_name, date=True, height=350)
         nb_element = 100
         xdata = list(range(nb_element))
         xdata = [1365026400000 + x * 100000 for x in xdata]
@@ -83,8 +83,8 @@ def test_lineChart_tooltip(self):
 
     def test_linePlusBarChart(self):
         """Test line Plus Bar Chart"""
-        type = "linePlusBarChart"
-        chart = linePlusBarChart(name=type, date=True, height=350)
+        chart_name = "linePlusBarChart"
+        chart = linePlusBarChart(name=chart_name, date=True, height=350)
         start_time = int(time.mktime(datetime.datetime(2012, 6, 1).timetuple()) * 1000)
         nb_element = 100
         xdata = list(range(nb_element))
@@ -99,8 +99,8 @@ def test_linePlusBarChart(self):
 
     def test_stackedAreaChart(self):
         """Test Stacked Area Chart"""
-        type = "stackedAreaChart"
-        chart = stackedAreaChart(name=type, height=400)
+        chart_name = "stackedAreaChart"
+        chart = stackedAreaChart(name=chart_name, height=400)
         nb_element = 100
         xdata = list(range(nb_element))
         xdata = [100 + x for x in xdata]
@@ -112,8 +112,8 @@ def test_stackedAreaChart(self):
 
     def test_MultiBarChart(self):
         """Test Multi Bar Chart"""
-        type = "MultiBarChart"
-        chart = multiBarChart(name=type, height=400)
+        chart_name = "MultiBarChart"
+        chart = multiBarChart(name=chart_name, height=400)
         nb_element = 10
         xdata = list(range(nb_element))
         ydata = [random.randint(1, 10) for i in range(nb_element)]
@@ -123,9 +123,9 @@ def test_MultiBarChart(self):
 
     def test_multiChart(self):
         """Test Multi (line plus bar) Chart"""
-        type = "multiChart"
+        chart_name = "multiChart"
         chart = multiChart(
-            name=type, x_is_date=False, x_axis_format="AM_PM",
+            name=chart_name, x_is_date=False, x_axis_format="AM_PM",
             no_data_message='custom message shows when there is no data',
             xAxis_staggerLabel=True
         )
@@ -147,8 +147,8 @@ def test_multiChart(self):
 
     def test_multiBarHorizontalChart(self):
         """Test multi Bar Horizontal Chart"""
-        type = "multiBarHorizontalChart"
-        chart = multiBarHorizontalChart(name=type, height=350)
+        chart_name = "multiBarHorizontalChart"
+        chart = multiBarHorizontalChart(name=chart_name, height=350)
         nb_element = 10
         xdata = list(range(nb_element))
         ydata = [random.randint(-10, 10) for i in range(nb_element)]
@@ -159,8 +159,8 @@ def test_multiBarHorizontalChart(self):
 
     def test_cumulativeLineChart(self):
         """Test Cumulative Line Chart"""
-        type = "cumulativeLineChart"
-        chart = cumulativeLineChart(name=type, height=400)
+        chart_name = "cumulativeLineChart"
+        chart = cumulativeLineChart(name=chart_name, height=400)
         start_time = int(time.mktime(datetime.datetime(2012, 6, 1).timetuple()) * 1000)
         nb_element = 100
         xdata = list(range(nb_element))
@@ -173,8 +173,8 @@ def test_cumulativeLineChart(self):
 
     def test_scatterChart(self):
         """Test Scatter Chart"""
-        type = "scatterChart"
-        chart = scatterChart(name=type, date=True, height=350)
+        chart_name = "scatterChart"
+        chart = scatterChart(name=chart_name, date=True, height=350)
         nb_element = 100
         xdata = [i + random.randint(1, 10) for i in range(nb_element)]
         ydata = [i * random.randint(1, 10) for i in range(nb_element)]
@@ -191,8 +191,8 @@ def test_scatterChart(self):
 
     def test_discreteBarChart(self):
         """Test discrete Bar Chart"""
-        type = "discreteBarChart"
-        chart = discreteBarChart(name=type, height=350)
+        chart_name = "discreteBarChart"
+        chart = discreteBarChart(name=chart_name, height=350)
         xdata = ["A", "B", "C", "D", "E", "F", "G"]
         ydata = [3, 12, -10, 5, 35, -7, 2]
 
@@ -205,8 +205,8 @@ def test_discreteBarChart(self):
 
     def test_pieChart(self):
         """Test Pie Chart"""
-        type = "pieChart"
-        chart = pieChart(name=type, color_category='category20c', height=400, width=400)
+        chart_name = "pieChart"
+        chart = pieChart(name=chart_name, color_category='category20c', height=400, width=400)
         xdata = ["Orange", "Banana", "Pear", "Kiwi", "Apple", "Strawberry", "Pineapple"]
         color_list = ['orange', 'yellow', '#C5E946', '#95b43f', 'red', '#FF2259', '#F6A641']
         extra_serie = {"tooltip": {"y_start": "", "y_end": " cal"}, "color_list": color_list}
@@ -218,16 +218,16 @@ def test_pieChart(self):
 
     def test_donutPieChart(self):
         """Test Donut Pie Chart"""
-        type = "pieChart"
-        chart = pieChart(name=type, height=400, width=400, donut=True, donutRatio=0.2)
+        chart_name = "pieChart"
+        chart = pieChart(name=chart_name, height=400, width=400, donut=True, donutRatio=0.2)
         xdata = ["Orange", "Banana", "Pear", "Kiwi", "Apple", "Strawberry", "Pineapple"]
         ydata = [3, 4, 0, 1, 5, 7, 3]
         chart.add_serie(y=ydata, x=xdata)
         chart.buildhtml()
 
     def test_can_create_bulletChart(self):
-        type = 'bulletChart'
-        chart = bulletChart(name=type, height=100, width=500)
+        chart_name = 'bulletChart'
+        chart = bulletChart(name=chart_name, height=100, width=500)
         title = 'Revenue',
         subtitle = 'US$, in thousands'
         ranges = [150, 225, 300]
@@ -242,8 +242,8 @@ def test_can_create_bulletChart(self):
         chart.buildhtml()
 
     def test_bulletChart_htmlcontent_correct(self):
-        type = 'bulletChart'
-        chart = bulletChart(name=type, height=100, width=500)
+        chart_name = 'bulletChart'
+        chart = bulletChart(name=chart_name, height=100, width=500)
         title = 'Revenue',
         subtitle = 'USD, in mill'
         ranges = [100, 250, 300]
@@ -262,8 +262,8 @@ def test_bulletChart_htmlcontent_correct(self):
         assert 'nv.models.bulletChart();' in chart.htmlcontent
 
     def test_bulletChart_marker_optional(self):
-        type = 'bulletChart'
-        chart = bulletChart(name=type, height=100, width=500)
+        chart_name = 'bulletChart'
+        chart = bulletChart(name=chart_name, height=100, width=500)
         title = 'Revenue',
         subtitle = 'USD, in mill'
         ranges = [100, 250, 300]
@@ -282,18 +282,18 @@ def test_bulletChart_marker_optional(self):
     def test_charts_with_extras(self):
         #  extras="d3.selectAll('#mygraphname text').style('opacity', 0.5)"
         type_bullet = 'bulletChart'
-        bullet_chart = bulletChart(name=type_bullet, height=100, width=500, extras="d3.selectAll('#mygraphname text').style('opacity', 0.5)")
+        bullet_chart = bulletChart(name=chart_name_bullet, height=100, width=500, extras="d3.selectAll('#mygraphname text').style('opacity', 0.5)")
         bullet_chart.buildhtml()
         assert 'data_bulletchart' in bullet_chart.htmlcontent
         assert "d3.selectAll('#mygraphname text').style('opacity', 0.5)" in bullet_chart.htmlcontent
 
         type_pie = "pieChart"
-        pie_chart = pieChart(name=type_pie, height=400, width=400, donut=True, donutRatio=0.2, extras="alert('Example of extra not even related to d3!')")
+        pie_chart = pieChart(name=chart_name_pie, height=400, width=400, donut=True, donutRatio=0.2, extras="alert('Example of extra not even related to d3!')")
         pie_chart.buildhtml()
         assert "alert('Example of extra not even related to d3!')" in pie_chart.htmlcontent
 
         type_line_plus_bar = "linePlusBarChart"
-        line_plus_bar_chart = linePlusBarChart(name=type_line_plus_bar, date=True, height=350, extras="d3.selectAll('#mygraphname text').style('fill', 'red')")
+        line_plus_bar_chart = linePlusBarChart(name=chart_name_line_plus_bar, date=True, height=350, extras="d3.selectAll('#mygraphname text').style('fill', 'red')")
         line_plus_bar_chart.buildhtml()
         assert "d3.selectAll('#mygraphname text').style('fill', 'red')" in line_plus_bar_chart.htmlcontent