What is the execution order of the following$$code block$?$

try:

$$ print$(\text{'}1\text{'}+2)$

except:

$$ print$(\text{'}$Invalid$\text{'})$

else:

$$ print$(\text{'}$Valid$\text{'})$

finally:

$$ print$(\text{'}$Thanks$\text{'})$

#unindent$$part of code