1import logging
 2import os
 3from random import SystemRandom
 4import sys
 5
 6logger = logging.getLogger('stripe')
 7logger.addHandler(logging.StreamHandler(sys.stdout))
 8logger.setLevel(logging.INFO)
 9
10__all__ = ['StringIO', 'json', 'utf8', 'random_letters', 'mkdir_p']
11
12if sys.version_info < (3,0):
13    # Used to interface with pycurl, which we only make available for
14    # those Python versions
15    try:
16        import cStringIO as StringIO
17    except ImportError:
18        import StringIO
19
20try:
21    import json
22except ImportError:
23    json = None
24
25if not (json and hasattr(json, 'loads')):
26    try:
27        import simplejson as json
28    except ImportError:
29        if not json:
30            raise ImportError(
31                "Stripe requires a JSON library, such as simplejson. "
32                "HINT: Try installing the "
33                "python simplejson library via 'pip install simplejson' or "
34                "'easy_install simplejson'.")
35        else:
36            raise ImportError(
37                "Stripe requires a JSON library with the same interface as "
38                "the Python 2.6 'json' library.  You appear to have a 'json' "
39                "library with a different interface.  Please install "
40                "the simplejson library.  HINT: Try installing the "
41                "python simplejson library via 'pip install simplejson' "
42                "or 'easy_install simplejson'.")
43
44
45def utf8(value):
46    if sys.version_info < (3, 0) and isinstance(value, unicode):
47        return value.encode('utf-8')
48    else:
49        return value
50
51def random_letters(count=4):
52    LETTERS = "abcdefghijklmnopqrstuvwxyz"
53    output = []
54    for i in range(0, count):
55        output.append(SystemRandom().choice(LETTERS))
56    return "".join(output)
57
58# TODO: Python >2.5 ?
59def mkdir_p(path):
60    try:
61        os.makedirs(path)
62    except OSError:
63        if os.path.isdir(path): pass
64        else: raise
65
66def exception_as():
67    _, err, _ = sys.exc_info()
68    return err