noweb in org-mode

The Code in org-org-mode:

#+name: first-block
#+begin_src python :results output
print ("first-block")
#+end_src

#+begin_src python :noweb yes :results output
<<first-block>>
print("second-block")
#+end_src


print ("first-block")
Code Snippet 1: first block
first-block


print ("first-block")
print("second-block")
Code Snippet 2: second block
first-block
second-block