Martin Panter added the comment:
It seems a terrible idea to require Python 3 to be installed in order to
regenerate the boot files for a Python 2 build. Maybe if we can figure out the
minimum installed Python version expected for these ASDL scripts in 2.7, and
maintain that while adding Python 3 support. But even that seems risky.
Your changes obviously make the files incompatible with Python 2:
print() # Prints an empty tuple
print("Error visiting", repr(object)) # Prints a 2-tuple
f = open(p, "w") # Writes CRLFs on Windows (I think; it’s been a while)
If we do go down this road, it may be worth looking at what has already been
done to the corresponding scripts in Python 3.
But you may not actually need to regenerate the files. If you are building from
the source directory, try “make touch” after generating the makefile. In
general, try “touch Include/Python-ast.h Python/Python-ast.c”.
I would like to see this be made easier for both Python 2 and 3. I suggested
some other ideas in Issue 23404.
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nosy: +martin.panter
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