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Add an "optimize" parameter to compile() to control the optimization level, and provide an interface to it in py_compile, compileall and PyZipFile.

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Georg Brandl 2010-12-04 10:26:46 +00:00
parent 427d3149eb
commit 8334fd9285
17 changed files with 280 additions and 97 deletions
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14
Lib/py_compile.py
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@ -72,7 +72,7 @@ def wr_long(f, x):
(x >> 16) & 0xff,
(x >> 24) & 0xff]))
def compile(file, cfile=None, dfile=None, doraise=False):
def compile(file, cfile=None, dfile=None, doraise=False, optimize=-1):
"""Byte-compile one Python source file to Python bytecode.
:param file: The source file name.
@ -86,6 +86,10 @@ def compile(file, cfile=None, dfile=None, doraise=False):
will be printed, and the function will return to the caller. If an
exception occurs and this flag is set to True, a PyCompileError
exception will be raised.
:param optimize: The optimization level for the compiler. Valid values
are -1, 0, 1 and 2. A value of -1 means to use the optimization
level of the current interpreter, as given by -O command line options.
:return: Path to the resulting byte compiled file.
Note that it isn't necessary to byte-compile Python modules for
@ -111,7 +115,8 @@ def compile(file, cfile=None, dfile=None, doraise=False):
timestamp = int(os.stat(file).st_mtime)
codestring = f.read()
try:
codeobject = builtins.compile(codestring, dfile or file,'exec')
codeobject = builtins.compile(codestring, dfile or file, 'exec',
optimize=optimize)
except Exception as err:
py_exc = PyCompileError(err.__class__, err, dfile or file)
if doraise:
@ -120,7 +125,10 @@ def compile(file, cfile=None, dfile=None, doraise=False):
sys.stderr.write(py_exc.msg + '\n')
return
if cfile is None:
cfile = imp.cache_from_source(file)
if optimize >= 0:
cfile = imp.cache_from_source(file, debug_override=not optimize)
else:
cfile = imp.cache_from_source(file)
try:
os.makedirs(os.path.dirname(cfile))
except OSError as error: