[Python-bugs-list] Fwd: Debian Bug#46993: py_compile.compile() won't compile files with CR+LF line endings (PR#101)

[flight@mathi.uni-heidelberg.de]

Full_Name: Gregor Hoffleit
Version: 1.5.2
OS: Debian GNU/Linux potato

[This was recorded as Debian bug#46993, cf.
http://www.debian.org/Bugs/db/46/46993.html]

Package: python-base
Version: 1.5.2-6
Severity: normal

On Unix systems, py_compile.compile() (and therefore compileall.py) won't
compile files with DOS/Windows lineendings (CR+LF). Commands like "import"
or "exec" will work, though.

The problem seems to be that py_compile.compile read()'s the whole file at
once and passes it as a string to __builtin__.compile(), while "import"
calls __builtin__.compile() for a file, so that __builtin__.compile seems to
do some magic while reading the file.

For a quick testcase:

  import __builtin__
  f=open("test.py","w")
  f.write('print "Hello"\015\012')
  f.close()
  f=open("test.py")
  c=f.read()
  f.close()
  __builtin__.compile(c,"test.py","exec")

results in:

  Traceback (innermost last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 9, in x
  File "<string>", line 1
    print "Hello"
                 ^
  SyntaxError: invalid syntax

while "import test" works fine and results in test.pyc.

Certainly the file.read() in py_compile.compile() isn't good enough for this
case.

    Gregor