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mahmoudajawad /
Last active Apr 1, 2018
Python (3.x) singleton metaclass. It allows manipulation of child classes, as well as converting all class funcs to classmethod's.
class ClassSingleton(type):
def __new__(cls, cls_name, bases, attrs):
for name, attr in attrs.items():
if callable(attr):
attrs[name] = classmethod(attr)
return type.__new__(cls, cls_name, bases, attrs)
def __init__(cls, cls_name, bases, attrs):
mahmoudajawad /
Last active May 23, 2018
Alternative parse_multipart function (to replace python cgi default implementation) that can read additional attributes.
def parse_multipart(rfile, boundary):
boundary = b'--' + boundary
rfile = re.compile(boundary+b'(?:\r\n|\n)').split(rfile.replace(b'\r\n'+boundary+b'--', b'').replace(b'\n'+boundary+b'--', b''))
pattern = b'Content-Disposition: form-data; name="?([\$a-zA-Z0-9\.\-_\\\:]+)"?(?:; filename="?([a-zA-Z0-9\.\-_]+)"?(?:\r\n|\n)Content-Type: ([a-zA-Z0-9\.\-_]+\/[a-zA-Z0-9\.\-_]+)(?:\r\n|\n)|(?:\r\n|\n))(?:\r\n|\n)(.+)'
multipart = {}
for part in rfile:
multipart_key = re.match(pattern, part, re.DOTALL).group(1)
multipart[multipart_key] = [group for group in re.match(pattern, part, re.DOTALL).groups()]
if multipart[multipart_key][3][-2] == 13 and multipart[multipart_key][3][-1] == 10:
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