Python added venv activation

+ Fixed formulahendry#1034
+ Added if condition to check if venv is present in workspace.

package.json

@@ -139,7 +139,7 @@
             "cpp": "cd $dir && g++ $fileName -o $fileNameWithoutExt && $dir$fileNameWithoutExt",
             "objective-c": "cd $dir && gcc -framework Cocoa $fileName -o $fileNameWithoutExt && $dir$fileNameWithoutExt",
             "php": "php",
-            "python": "python -u",
+            "python": "if [[ -n $(find . -type f -name 'activate') ]]; then source activate; fi && python -u",
             "perl": "perl",
             "perl6": "perl6",
             "ruby": "ruby",