move to python3?

[bblfish]

There was a major change in syntax in python as it moved to python3.
It looks like the move can be automated
https://stackoverflow.com/questions/25445439/what-does-syntaxerror-missing-parentheses-in-call-to-print-mean-in-python

I tried 2to3 . -w which changes 142 files. But it gets stuck on

 File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 322, in _read_python_source
    return f.read(), encoding
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 983: invalid start byte

And I am not knowledgeable enough to continue much further at present.

[timbl]

Interesting ... not obvious while file actually had the unicode error?

[bblfish]

I am not sure. It may be an error in the refactoring code too. It does a huge amount of refactoring and then it returns (longer version)

-        print "# ERROR: Unknown line format:", l
-    print "]."
+        print("# ERROR: Unknown line format:", l)
+    print("].")


 def do(path):
@@ -154,12 +154,12 @@
 for arg in sys.argv[1:]:
     if arg[0:1] == "-":
         if arg == "-?" or arg == "--help":
-            print
+            print()
         elif arg == "-v": verbose = 1
         elif arg == "-m": hideMailbox = 1
         elif arg == "-l": pureLDIF = 1
         else:
-            print """Bad option argument.""" + __doc__
+            print("""Bad option argument.""" + __doc__)
             sys.exit(-1)
     else:
         files.append(arg)
Traceback (most recent call last):
  File "/opt/homebrew/bin//2to3", line 5, in <module>
    sys.exit(main("lib2to3.fixes"))
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/main.py", line 263, in main
    rt.refactor(args, options.write, options.doctests_only,
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 690, in refactor
    return super(MultiprocessRefactoringTool, self).refactor(
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 284, in refactor
    self.refactor_dir(dir_or_file, write, doctests_only)
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 304, in refactor_dir
    self.refactor_file(fullname, write, doctests_only)
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 731, in refactor_file
    return super(MultiprocessRefactoringTool, self).refactor_file(
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 326, in refactor_file
    input, encoding = self._read_python_source(filename)
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib2to3/refactor.py", line 322, in _read_python_source
    return f.read(), encoding
  File "/opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/codecs.py", line 322, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 983: invalid start byte

[timbl]

It was a bogus copyright sign in pim/lookout.py

[timbl]

By looking at the file it was processing just before the error