python - looping through dictionary of inconsistent lists -

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i parsing xml , converting dictionary. there dictionary 

'directories': {'dirname': 'd:\\directory\\subdir'},

or

'directories': {   'dirname': [   'd:\\directory1\\subdir1',                                   'd:\\directory2\\subdir2']},

how loop through dictionary. doing works if has multiple elements. should check if dirname list of elements or element , there looping through ? or there pythonic way achieve this

rules = [] v in args["directories"]["dirname"]:     rules.append(os.path.join(v, "*", "*"))

output: input 'directories': { 'dirname': [ 'd:\\directory1\\subdir1', 'd:\\directory2\\subdir2']}, 

  rules[] = ['d:\\directory1\\subdir1\\*\\*', 'd:\\directory1\\subdir1\\*\\*']

for input 'directories': {'dirname': 'd:\\directory\\subdir'},

['d\\*\\*', ':\\*\\*', '\\*\\*', 'd\\*\\*', 'i\\*\\*', 'r\\*\\*', 'e\\*\\*', 'c\\*\\*', 't\\*\\*', 'o\\*\\*', 'r\\*\\*', 'y\\*\\*', '\\*\\*', 's\\*\\*', 'u\\*\\*', 'b\\*\\*', 'd\\*\\*', 'i\\*\\*', 'r\\*\\*']

please see me novice in python

you can check type of args["directories"]["dirname"] , treat accordingly:

rules = [] dirnames = args["directories"]["dirname"] if isinstance(dirnames, basestring):     rules.append(os.path.join(dirnames, "*", "*")) elif isinstance(dirnames, list):     v in dirnames:         rules.append(os.path.join(v, "*", "*"))

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