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1 #!/usr/bin/env python
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2
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3 """
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4 load modules and their attributes from a string
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5 """
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6
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7 import imp
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8 import os
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9
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10 def import_dotted_path(module):
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11 path = module.split('.')
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12 module = __import__(module)
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13 for name in path[1:]:
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14 module = getattr(module, name)
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15 return module
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16
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17 def load(string):
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18 """loads a string and returns a python object"""
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19
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20 try:
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21 if ':' in string:
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22 path, target = string.split(':', 1)
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23 if os.path.isabs(path) and os.path.exists(path):
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24 # path to file
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25 module = imp.load_source(path, path)
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26 else:
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27 module = import_dotted_path(path)
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28 obj = module
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29 while '.' in target:
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30 attr, target = target.split('.', 1)
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31 obj = getattr(obj, attr)
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32 obj = getattr(obj, target)
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33 return obj
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34 else:
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35 # module: dotted path
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36 return import_dotted_path(string)
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37 except:
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38 print string
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39 raise
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40
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41 # TODO: entry points
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42
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43 if __name__ == '__main__':
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44 import sys
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45 for i in sys.argv[1:]:
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46 print load(i)
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