Mercurial > hg > pyloader
annotate pyloader/loader.py @ 3:65d9a7c7ac63
other misc improvements
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Tue, 10 May 2011 10:26:19 -0700 |
| parents | 6cb7696edc4d |
| children | 58eed691dca7 |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
| 4 load modules and their attributes from a string | |
| 5 """ | |
| 6 | |
| 7 import imp | |
| 8 import os | |
|
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47d9472e7754
add path of file directory when loading files
Jeff Hammel <jhammel@mozilla.com>
parents:
0
diff
changeset
|
9 import sys |
| 0 | 10 |
| 3 | 11 __all__ = ['import_dotted_path', 'load'] |
| 12 | |
| 0 | 13 def import_dotted_path(module): |
| 14 path = module.split('.') | |
| 15 module = __import__(module) | |
| 16 for name in path[1:]: | |
| 17 module = getattr(module, name) | |
| 18 return module | |
| 19 | |
| 20 def load(string): | |
| 21 """loads a string and returns a python object""" | |
| 22 | |
| 23 try: | |
| 24 if ':' in string: | |
| 25 path, target = string.split(':', 1) | |
| 26 if os.path.isabs(path) and os.path.exists(path): | |
| 27 # path to file | |
|
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47d9472e7754
add path of file directory when loading files
Jeff Hammel <jhammel@mozilla.com>
parents:
0
diff
changeset
|
28 sys.path.append(os.path.dirname(path)) |
| 0 | 29 module = imp.load_source(path, path) |
|
1
47d9472e7754
add path of file directory when loading files
Jeff Hammel <jhammel@mozilla.com>
parents:
0
diff
changeset
|
30 sys.path.pop() |
| 0 | 31 else: |
| 32 module = import_dotted_path(path) | |
| 33 obj = module | |
| 34 while '.' in target: | |
| 35 attr, target = target.split('.', 1) | |
| 36 obj = getattr(obj, attr) | |
| 37 obj = getattr(obj, target) | |
| 38 return obj | |
| 39 else: | |
| 40 # module: dotted path | |
| 41 return import_dotted_path(string) | |
| 42 except: | |
| 43 print string | |
| 44 raise | |
| 45 | |
| 46 # TODO: entry points | |
| 47 | |
| 48 if __name__ == '__main__': | |
| 49 import sys | |
| 50 for i in sys.argv[1:]: | |
| 51 print load(i) |