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import collections |
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import hashlib |
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import re |
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import unicodedata |
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def dict_path(d, path): |
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if not isinstance(path, (list, tuple)): |
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raise ValueError() |
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for keys in path: |
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if type(keys) is not list: |
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keys = [keys] |
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value = None |
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for key in keys: |
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if key not in d: |
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continue |
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value = d[key] |
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if value is None: |
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value = {} |
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for key in keys: |
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d[key] = value |
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d = value |
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return d |
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def flatten(text): |
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if text is None: |
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return None |
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# Normalize `text` to ascii |
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text = normalize(text) |
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# Remove special characters |
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text = re.sub('[^A-Za-z0-9\s]+', '', text) |
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# Merge duplicate spaces |
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text = ' '.join(text.split()) |
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# Convert to lower-case |
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return text.lower() |
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def merge(a, b, recursive=False): |
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if not recursive: |
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a.update(b) |
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return a |
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# Merge child dictionaries |
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for k, v in b.iteritems(): |
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if isinstance(v, collections.Mapping): |
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r = merge(a.get(k, {}), v, recursive=True) |
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a[k] = r |
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else: |
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a[k] = b[k] |
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return a |
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def md5(value): |
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# Generate MD5 hash of `value` |
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m = hashlib.md5() |
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m.update(value) |
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return m.hexdigest() |
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def normalize(text): |
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if text is None: |
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return None |
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# Normalize unicode characters |
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if type(text) is unicode: |
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text = unicodedata.normalize('NFKD', text) |
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# Ensure text is ASCII, ignore unknown characters |
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return text.encode('ascii', 'ignore') |
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def pms_path(): |
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file_path = __file__.lower() |
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if 'plug-ins' not in file_path: |
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return None |
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return __file__[:file_path.index('plug-ins')] |
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def resolve(value, *args, **kwargs): |
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if hasattr(value, '__call__'): |
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return value(*args, **kwargs) |
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return value |
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def to_integer(value): |
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if value is None: |
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return None |
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try: |
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return int(value) |
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except: |
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return None |
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def to_tuple(value): |
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if type(value) is tuple: |
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return value |
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return value, |
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def try_convert(value, value_type, default=None): |
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try: |
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return value_type(value) |
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except ValueError: |
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return default |
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except TypeError: |
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return default |
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Escape sequences in Python are generally interpreted according to rules similar to standard C. Only if strings are prefixed with
r
orR
are they interpreted as regular expressions.The escape sequence that was used indicates that you might have intended to write a regular expression.
Learn more about the available escape sequences. in the Python documentation.