Added a function to extract intrinsic typed variables from python int…

…o C++

example_external.cpp

@@ -0,0 +1,24 @@
+#include <vector>
+#include <iostream>
+#include <string>
+#include <pylingual.hpp>
+
+int main(){
+
+  try{
+
+    pylingual py;
+
+    py.call("x = 42");
+    auto x = py.get<double>("x");
+    cout << x << endl;
+
+    return 0;
+
+
+  }catch(boost::python::error_already_set const &){
+    //Parse and output the exception
+      string perror_str = parse_python_exception();
+    cout << "Error in Python: " << perror_str << endl;
+  }
+}

include/pylingual.hpp

@@ -53,6 +53,11 @@ class pylingual {
     return Vec;
   }
 
+  template<typename T>
+  T get(const char* var_to_extract) {
+    return extract<T>(main_module.attr(var_to_extract));
+  }
+
   template<typename T>
   void call(const char* code_to_execute,char* var_to_extract,vector<T> &output) {
     exec(code_to_execute,main_namespace);