我们从Python开源项目中，提取了以下25个代码示例，用于说明如何使用__builtin__.compile()。
def compile_path(skip_curdir=1, maxlevels=0, force=0, quiet=0): """Byte-compile all module on sys.path. Arguments (all optional): skip_curdir: if true, skip current directory (default true) maxlevels: max recursion level (default 0) force: as for compile_dir() (default 0) quiet: as for compile_dir() (default 0) """ success = 1 for dir in sys.path: if (not dir or dir == os.curdir) and skip_curdir: print 'Skipping current directory' else: success = success and compile_dir(dir, maxlevels, None, force, quiet=quiet) return success
def multireplace(string, replacements): """ Given a string and a replacement map, it returns the replaced string. :param str string: string to execute replacements on :param dict replacements: replacement dictionary {value to find: value to replace} :rtype: str """ # Place longer ones first to keep shorter substrings from matching where the longer ones should take place # For instance given the replacements {'ab': 'AB', 'abc': 'ABC'} against the string 'hey abc', it should produce # 'hey ABC' and not 'hey ABc' substrs = sorted(replacements, key=len, reverse=True) # Create a big OR regex that matches any of the substrings to replace regexp = re.compile('|'.join(map(re.escape, substrs))) # For each match, look up the new string in the replacements return regexp.sub(lambda match: replacements[match.group(0)], string)
def _compile(pathname, timestamp): """Compile (and cache) a Python source file. The file specified by <pathname> is compiled to a code object and returned. Presuming the appropriate privileges exist, the bytecodes will be saved back to the filesystem for future imports. The source file's modification timestamp must be provided as a Long value. """ codestring = open(pathname, 'rU').read() if codestring and codestring[-1] != '\n': codestring = codestring + '\n' code = __builtin__.compile(codestring, pathname, 'exec') # try to cache the compiled code try: f = open(pathname + _suffix_char, 'wb') except IOError: pass else: f.write('\0\0\0\0') f.write(struct.pack('<I', timestamp)) marshal.dump(code, f) f.flush() f.seek(0, 0) f.write(imp.get_magic()) f.close() return code
def main(args=None): """Compile several source files. The files named in 'args' (or on the command line, if 'args' is not specified) are compiled and the resulting bytecode is cached in the normal manner. This function does not search a directory structure to locate source files; it only compiles files named explicitly. If '-' is the only parameter in args, the list of files is taken from standard input. """ if args is None: args = sys.argv[1:] rv = 0 if args == ['-']: while True: filename = sys.stdin.readline() if not filename: break filename = filename.rstrip('\n') try: compile(filename, doraise=True) except PyCompileError as error: rv = 1 sys.stderr.write("%s\n" % error.msg) except IOError as error: rv = 1 sys.stderr.write("%s\n" % error) else: for filename in args: try: compile(filename, doraise=True) except PyCompileError as error: # return value to indicate at least one failure rv = 1 sys.stderr.write(error.msg) return rv
def main(args=None): """Compile several source files. The files named in 'args' (or on the command line, if 'args' is not specified) are compiled and the resulting bytecode is cached in the normal manner. This function does not search a directory structure to locate source files; it only compiles files named explicitly. If '-' is the only parameter in args, the list of files is taken from standard input. """ if args is None: args = sys.argv[1:] rv = 0 if args == ['-']: while True: filename = sys.stdin.readline() if not filename: break filename = filename.rstrip('\n') try: compile(filename, doraise=True) except PyCompileError as error: rv = 1 sys.stderr.write("%s\n" % error.msg) except IOError as error: rv = 1 sys.stderr.write("%s\n" % error) else: for filename in args: try: compile(filename, doraise=True) except PyCompileError as error: # return value to indicate at least one failure rv = 1 sys.stderr.write("%s\n" % error.msg) return rv
def _compile(pathname, timestamp): """Compile (and cache) a Python source file. The file specified by <pathname> is compiled to a code object and returned. Presuming the appropriate privileges exist, the bytecodes will be saved back to the filesystem for future imports. The source file's modification timestamp must be provided as a Long value. """ with open(pathname, 'rU') as fp: codestring = fp.read() if codestring and codestring[-1] != '\n': codestring = codestring + '\n' code = __builtin__.compile(codestring, pathname, 'exec') # try to cache the compiled code try: f = open(pathname + _suffix_char, 'wb') except IOError: pass else: f.write('\0\0\0\0') f.write(struct.pack('<I', timestamp)) marshal.dump(code, f) f.flush() f.seek(0, 0) f.write(imp.get_magic()) f.close() return code
def compile_dir(dir, maxlevels=10, ddir=None, force=0, rx=None, quiet=0): """Byte-compile all modules in the given directory tree. Arguments (only dir is required): dir: the directory to byte-compile maxlevels: maximum recursion level (default 10) ddir: the directory that will be prepended to the path to the file as it is compiled into each byte-code file. force: if 1, force compilation, even if timestamps are up-to-date quiet: if 1, be quiet during compilation """ if not quiet: print 'Listing', dir, '...' try: names = os.listdir(dir) except os.error: print "Can't list", dir names = [] names.sort() success = 1 for name in names: fullname = os.path.join(dir, name).replace(os.sep, '/') if ddir is not None: dfile = os.path.join(ddir, name).replace(os.sep, '/') else: dfile = None if not os.path.isdir(fullname): if not compile_file(fullname, ddir, force, rx, quiet): success = 0 elif maxlevels > 0 and \ name != os.curdir and name != os.pardir and \ os.path.isdir(fullname) and \ not os.path.islink(fullname): if not compile_dir(fullname, maxlevels - 1, dfile, force, rx, quiet): success = 0 return success
def create_pyc(codestring, cfile, timestamp=None): if timestamp is None: timestamp = time() codeobject = builtins.compile(codestring, '<recompile>', 'exec') cfile.write(MAGIC) cfile.write(struct.pack('i', timestamp)) marshal.dump(codeobject, cfile) cfile.flush()
def compile(file, cfile=None, dfile=None, doraise=False): """Byte-compile one Python source file to Python bytecode. Arguments: file: source filename cfile: target filename; defaults to source with 'c' or 'o' appended ('c' normally, 'o' in optimizing mode, giving .pyc or .pyo) dfile: purported filename; defaults to source (this is the filename that will show up in error messages) doraise: flag indicating whether or not an exception should be raised when a compile error is found. If an exception occurs and this flag is set to False, a string indicating the nature of the exception 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. Note that it isn't necessary to byte-compile Python modules for execution efficiency -- Python itself byte-compiles a module when it is loaded, and if it can, writes out the bytecode to the corresponding .pyc (or .pyo) file. However, if a Python installation is shared between users, it is a good idea to byte-compile all modules upon installation, since other users may not be able to write in the source directories, and thus they won't be able to write the .pyc/.pyo file, and then they would be byte-compiling every module each time it is loaded. This can slow down program start-up considerably. See compileall.py for a script/module that uses this module to byte-compile all installed files (or all files in selected directories). """ with open(file, 'U') as f: try: timestamp = long(os.fstat(f.fileno()).st_mtime) except AttributeError: timestamp = long(os.stat(file).st_mtime) codestring = f.read() try: codeobject = __builtin__.compile(codestring, dfile or file,'exec') except Exception,err: py_exc = PyCompileError(err.__class__, err, dfile or file) if doraise: raise py_exc else: sys.stderr.write(py_exc.msg + '\n') return if cfile is None: cfile = file + (__debug__ and 'c' or 'o') with open(cfile, 'wb') as fc: fc.write('\0\0\0\0') wr_long(fc, timestamp) marshal.dump(codeobject, fc) fc.flush() fc.seek(0, 0) fc.write(MAGIC)
def compile_file(fullname, ddir=None, force=0, rx=None, quiet=0): """Byte-compile one file. Arguments (only fullname is required): fullname: the file to byte-compile ddir: if given, the directory name compiled in to the byte-code file. force: if 1, force compilation, even if timestamps are up-to-date quiet: if 1, be quiet during compilation """ success = 1 name = os.path.basename(fullname) if ddir is not None: dfile = os.path.join(ddir, name).replace(os.sep, '/') else: dfile = None if rx is not None: mo = rx.search(fullname) if mo: return success if os.path.isfile(fullname): head, tail = name[:-3], name[-3:] if tail == '.py': timeStr = subprocess.check_output( ['git', '--no-pager', 'log', '-n', '1', '--format="%ct"', '--', fullname])[1:-2] if not force: try: if not timeStr: mtime = int(os.stat(fullname).st_mtime) else: mtime = int(timeStr) expect = struct.pack('<4sl', imp.get_magic(), mtime) cfile = fullname + (__debug__ and 'c' or 'o') with open(cfile, 'rb') as chandle: actual = chandle.read(8) if expect == actual: return success except IOError: pass if not quiet: print 'Compiling', fullname, '...' try: ok = do_compile(fullname, None, dfile, True, timeStr) except py_compile.PyCompileError, err: if quiet: print 'Compiling', fullname, '...' print err.msg success = 0 except IOError, e: print "Sorry", e success = 0 else: if ok == 0: success = 0 return success
