1def __boot(): 2 import sys 3 import os 4 PYTHONPATH = os.environ.get('PYTHONPATH') 5 if PYTHONPATH is None or (sys.platform == 'win32' and not PYTHONPATH): 6 PYTHONPATH = [] 7 else: 8 PYTHONPATH = PYTHONPATH.split(os.pathsep) 9 10 pic = getattr(sys, 'path_importer_cache', {}) 11 stdpath = sys.path[len(PYTHONPATH):] 12 mydir = os.path.dirname(__file__) 13 14 for item in stdpath: 15 if item == mydir or not item: 16 continue # skip if current dir. on Windows, or my own directory 17 importer = pic.get(item) 18 if importer is not None: 19 loader = importer.find_module('site') 20 if loader is not None: 21 # This should actually reload the current module 22 loader.load_module('site') 23 break 24 else: 25 try: 26 import imp # Avoid import loop in Python >= 3.3 27 stream, path, descr = imp.find_module('site', [item]) 28 except ImportError: 29 continue 30 if stream is None: 31 continue 32 try: 33 # This should actually reload the current module 34 imp.load_module('site', stream, path, descr) 35 finally: 36 stream.close() 37 break 38 else: 39 raise ImportError("Couldn't find the real 'site' module") 40 41 known_paths = dict([(makepath(item)[1], 1) for item in sys.path]) # 2.2 comp 42 43 oldpos = getattr(sys, '__egginsert', 0) # save old insertion position 44 sys.__egginsert = 0 # and reset the current one 45 46 for item in PYTHONPATH: 47 addsitedir(item) 48 49 sys.__egginsert += oldpos # restore effective old position 50 51 d, nd = makepath(stdpath[0]) 52 insert_at = None 53 new_path = [] 54 55 for item in sys.path: 56 p, np = makepath(item) 57 58 if np == nd and insert_at is None: 59 # We've hit the first 'system' path entry, so added entries go here 60 insert_at = len(new_path) 61 62 if np in known_paths or insert_at is None: 63 new_path.append(item) 64 else: 65 # new path after the insert point, back-insert it 66 new_path.insert(insert_at, item) 67 insert_at += 1 68 69 sys.path[:] = new_path 70 71 72if __name__ == 'site': 73 __boot() 74 del __boot 75