exec statement balks at CR/LF

[hinsen]

BPO	992207
Nosy	@birkenfeld, @birkenfeld, @devdanzin

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/birkenfeld'
closed_at = <Date 2009-03-31.16:57:30.776>
created_at = <Date 2004-07-16.09:21:42.000>
labels = ['interpreter-core', 'easy', 'type-feature', 'docs']
title = 'exec statement balks at CR/LF'
updated_at = <Date 2009-03-31.16:57:30.774>
user = 'https://bugs.python.org/hinsen'

bugs.python.org fields:

activity = <Date 2009-03-31.16:57:30.774>
actor = 'georg.brandl'
assignee = 'georg.brandl'
closed = True
closed_date = <Date 2009-03-31.16:57:30.776>
closer = 'georg.brandl'
components = ['Documentation', 'Interpreter Core']
creation = <Date 2004-07-16.09:21:42.000>
creator = 'hinsen'
dependencies = []
files = []
hgrepos = []
issue_num = 992207
keywords = ['easy']
message_count = 4.0
messages = ['60529', '60530', '82036', '84837']
nosy_count = 4.0
nosy_names = ['georg.brandl', 'georg.brandl', 'hinsen', 'ajaksu2']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'test needed'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue992207'
versions = ['Python 2.7']

[hinsen]

Under Linux and MacOS (no others tested), if "foo.py" is a DOS/
Windows style Python file (CR/LF line endings), then

python foo.py

will work, as will

  execfile("foo.py")

and

exec file("foo.py")

from inside Python. However,

exec file("foo.py").read()

will report a syntax error. In other words, the parser seems to
accept CR/LF only if the source of the data is a file, not a string.

When running under Linux and MacOS (no others tested), the exec
statement reports a syntax error. I didn't find anything about this
in the documentation, so I don't know if it's a bug or a feature. If
it's a feature, it is not a useful one!

[birkenfeld]

Logged In: YES
user_id=1188172

I'm not sure this is a bug.

Is exec supposed to accept code in crlf-terminated strings?

[devdanzin]

The behavior is still present, but I'm not sure it's a bug either. The
documentation could mention this:
http://docs.python.org/dev/reference/simple_stmts.html#exec

[birkenfeld]

Documented in r70838, r70840.