Redirect_stdio.py

from io import StringIO
import sys

old_stdout = sys.stdout
sys.stdout = mystdout = StringIO()

# blah blah lots of code ...
print("fuck me god")
sys.stdout = old_stdout

content = mystdout.getvalue()
print (content)
mystdout.close()

redirectStdIO.cpp

// Redirect_io_string
struct cout_redirect {
	cout_redirect(std::streambuf * new_buffer)
		: old(std::cout.rdbuf(new_buffer))
	{ }

	~cout_redirect() {
		std::cout.rdbuf(old);
	}

private:
	std::streambuf * old;
};
int main(){
 	std::cout << "Fuck me god\n";
 	std::string text;
 	text.resize(64);
 	{
 		std::stringstream buffer;
 		cout_redirect cd(buffer.rdbuf());
 		std::cout << "Bla" << std::endl;
 		text = buffer.str(); // text will now contain "Bla\n"
 	}
 	std::cout << text << std::endl;
// 
 	return 0;
 	}