Python imp.cache_from_source方法代碼示例

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def forget(modname):
    """'Forget' a module was ever imported.

    This removes the module from sys.modules and deletes any PEP 3147 or
    legacy .pyc and .pyo files.
    """
    unload(modname)
    for dirname in sys.path:
        source = os.path.join(dirname, modname + '.py')
        # It doesn't matter if they exist or not, unlink all possible
        # combinations of PEP 3147 and legacy pyc and pyo files.
        unlink(source + 'c')
        unlink(source + 'o')
        unlink(imp.cache_from_source(source, debug_override=True))
        unlink(imp.cache_from_source(source, debug_override=False))

# On some platforms, should not run gui test even if it is allowed
# in `use_resources'. 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def pyc_file_from_path(path):
    """Given a python source path, locate the .pyc.

    """

    if has_pep3147():
        if py35:
            import importlib

            candidate = importlib.util.cache_from_source(path)
        else:
            import imp

            candidate = imp.cache_from_source(path)
        if os.path.exists(candidate):
            return candidate

    # even for pep3147, fall back to the old way of finding .pyc files,
    # to support sourceless operation
    filepath, ext = os.path.splitext(path)
    for ext in get_current_bytecode_suffixes():
        if os.path.exists(filepath + ext):
            return filepath + ext
    else:
        return None 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def make_legacy_pyc(source):
    """Move a PEP 3147 pyc/pyo file to its legacy pyc/pyo location.

    The choice of .pyc or .pyo extension is done based on the __debug__ flag
    value.

    :param source: The file system path to the source file.  The source file
        does not need to exist, however the PEP 3147 pyc file must exist.
    :return: The file system path to the legacy pyc file.
    """
    pyc_file = imp.cache_from_source(source)
    up_one = os.path.dirname(os.path.abspath(source))
    legacy_pyc = os.path.join(up_one, source + ('c' if __debug__ else 'o'))
    os.rename(pyc_file, legacy_pyc)
    return legacy_pyc 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def cache_from_source(py_file, debug=__debug__):
        ext = debug and 'c' or 'o'
        return py_file + ext 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def cache_from_source(path, debug_override=None):
        assert path.endswith('.py')
        if debug_override is None:
            debug_override = __debug__
        if debug_override:
            suffix = 'c'
        else:
            suffix = 'o'
        return path + suffix 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def pyc_file_from_path(path):
    """Given a python source path, locate the .pyc.

    See http://www.python.org/dev/peps/pep-3147/
                        #detecting-pep-3147-availability
        http://www.python.org/dev/peps/pep-3147/#file-extension-checks

    """
    import imp
    has3147 = hasattr(imp, 'get_tag')
    if has3147:
        return imp.cache_from_source(path)
    else:
        return simple_pyc_file_from_path(path) 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def find_bytecode_files(python_file):
    """
    Find the byte code file(s) generated from a Python file.

    :param python_file: The pathname of a ``*.py`` file (a string).
    :returns: A generator of pathnames (strings).

    Starting from Python 3.2 byte code files are written according to `PEP
    3147`_ which also defines :func:`imp.cache_from_source()` to locate
    (optimized) byte code files. When this function is available it is used,
    when it's not available the corresponding ``*.pyc`` and/or ``*.pyo`` files
    are located manually by :func:`find_bytecode_files()`.

    .. _PEP 3147: https://www.python.org/dev/peps/pep-3147/
    """
    if HAS_PEP_3147:
        bytecode_file = imp.cache_from_source(python_file, True)
        if os.path.isfile(bytecode_file):
            yield bytecode_file
        optimized_bytecode_file = imp.cache_from_source(python_file, False)
        if os.path.isfile(optimized_bytecode_file):
            yield optimized_bytecode_file
    else:
        for suffix in ('c', 'o'):
            bytecode_file = python_file + suffix
            if os.path.isfile(bytecode_file):
                yield bytecode_file 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def cache_from_source(path, debug_override=None):
            assert path.endswith('.py')
            if debug_override is None:
                debug_override = __debug__
            if debug_override:
                suffix = 'c'
            else:
                suffix = 'o'
            return path + suffix 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def cache_from_source(path, debug_override=None):
        if debug_override is None:
            debug_override = __debug__
        basename, ext = os.path.splitext(path)
        return basename + '.pyc' if debug_override else '.pyo' 

# 需要導入模塊: import imp [as 別名]
# 或者: from imp import cache_from_source [as 別名]
def add(self, path):
        path = normalize_path(path)
        if not os.path.exists(path):
            return
        if self._permitted(path):
            self.paths.add(path)
        else:
            self._refuse.add(path)

        # __pycache__ files can show up after 'installed-files.txt' is created, due to imports
        if os.path.splitext(path)[1] == '.py' and uses_pycache:
            self.add(imp.cache_from_source(path))