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Editorial Team
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Asked: 2026-05-30T15:31:09+00:00

I have trouble with Emacs+Python 2.7.1+Encoding. According to PEP 0263 , Python uses the

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I have trouble with Emacs+Python 2.7.1+Encoding. According to PEP 0263, Python uses the same declaration of source encoding as emacs does.

There is no problem when I start my Python source code script with the following encoding tag:

#!/usr/bin/python
# -*- mode=python; encoding:us-ascii -*-

But when I add a line ending mode to my encoding such as in:

#!/usr/bin/python
# -*- mode=python; encoding:us-ascii-unix -*-

Emacs still acepts my encoding information, but I get the following error from Python when executing my script:

File "./unicode.py", line 2
SyntaxError: encoding problem: with BOM

Is there a way to tell Emacs about the line ending I want to use and at the same time tell Python about the source file encoding?

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1 Answer

  1. Editorial Team

    You can write two blocks: one that is parsed only by the interpreter, and one that is only parsed by Emacs:

    #!/usr/bin/python
# coding: us-ascii

print "Hello World"    

# Local Variables:
# mode: python
# coding: us-ascii-unix
# End:

    Note that (1) us-ascii is the default in Python 2.x; and (2) Emacs is usually able to determine the line ending convention automatically; so you might be able to get along without declaring anything.

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