Update plotly.js to explicitly defined version by downloading from plotly.js github using a setup.py command

Author: jonmmease

makefile

@@ -56,14 +56,8 @@ pull_chunked : submodules/chunked_requests
 	cd submodules/chunked_requests; git pull origin master
 
 update_plotlyjs_for_offline :
-	@echo "Updating plotly.js for Offline Mode"
+	@echo "Updating plotly.js"
 	@echo "------------------"
-	python -c "import urllib2;\
-				cdn_url = 'https://cdn.plot.ly/plotly-latest.min.js';\
-				response = urllib2.urlopen(cdn_url);\
-				html = response.read();\
-				f = open('./plotly/package_data/plotly.min.js', 'w');\
-    		 	f.write(html);\
-				f.close()"
+	python setup.py updateplotlyjs
 	@echo "---------------------------------"
 	@echo "Remember to update the CHANGELOG!"

setup.py

@@ -167,6 +167,29 @@ def run(self):
                 f.write(response.read())
 
 
+class DownloadPlotlyJsCommand(Command):
+    description = 'Download latest version of the plot-schema JSON file'
+    user_options = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        if sys.version_info.major != 3:
+            raise ImportError('Schema download must be executed with Python 3')
+
+        import urllib.request
+        url = ('https://raw.githubusercontent.com/plotly/plotly.js/'
+               'v%s/dist/plotly.min.js' % plotly_js_version)
+        with urllib.request.urlopen(url) as response:
+
+            with open('plotly/package_data/plotly.min.js', 'wb') as f:
+                f.write(response.read())
+
+
 setup(name='plotly',
       version=__version__,
       use_2to3=False,
@@ -938,6 +961,7 @@ def run(self):
           'sdist': js_prerelease(sdist, strict=True),
           'jsdeps': NPM,
           'codegen': CodegenCommand,
-          'updateschema': DownloadSchemaCommand
+          'updateschema': DownloadSchemaCommand,
+          'updateplotlyjs': DownloadPlotlyJsCommand
       },
 )