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python Programming Glossary: baseDifferences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python an instance of a derived class is an instance of a base class too while checking for equality of type does not it demands.. else using the argument as if it was of some other type . basestring is however quite a special case a builtin type that exists.. to let you use isinstance both str and Unicode subclass basestring . Strings are sequences you could loop over them index..
In Python, how do I determine if an object is iterable? http://stackoverflow.com/questions/1952464/in-python-how-do-i-determine-if-an-object-is-iterable iterable' The collections module provides some abstract base classes which allow to ask classes or instances if they provide..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python integer to a string in a given numeric base in python Python allows easy creation of an integer from a.. easy creation of an integer from a string of a given base via int str base . I want to perform the inverse creation of.. of an integer from a string of a given base via int str base . I want to perform the inverse creation of a string from an..
Evaluating a mathematical expression in a string http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string line 1 in module ValueError invalid literal for int with base 10 '2^4' I know that eval can work around this but isn't there..
Why do people write #!/usr/bin/env python on the first line of a Python script? http://stackoverflow.com/questions/2429511/why-do-people-write-usr-bin-env-python-on-the-first-line-of-a-python-script
How to get current CPU and RAM usage in Python? http://stackoverflow.com/questions/276052/how-to-get-current-cpu-and-ram-usage-in-python
What are “named tuples” in Python? http://stackoverflow.com/questions/2970608/what-are-named-tuples-in-python with them. You can even use your named tuple types as base classes class Point namedtuple 'Point' 'x y' ... However as..
Understanding Python super() and init methods http://stackoverflow.com/questions/576169/understanding-python-super-and-init-methods this question Super lets you avoid referring to the base class explicitly which can be nice. But the main advantage comes..
http://stackoverflow.com/questions/929029/how-do-i-access-the-child-classes-of-an-object-in-django-without-knowing-the-nam class InheritanceCastModel models.Model An abstract base class that provides a ``real_type`` FK to ContentType. For use.. Meta abstract True This is implemented as an abstract base class to make it reusable you could also put these methods and..
http://stackoverflow.com/questions/1119722/base-62-conversion-in-python 62 conversion in Python How would you convert an integer to.. def base62_encode num alphabet ALPHABET Encode a number in Base X `num` The number to encode `alphabet` The alphabet to use.. arr def base62_decode string alphabet ALPHABET Decode a Base X encoded string into the number Arguments `string` The encoded..
Why is SQLAlchemy insert with sqlite 25 times slower than using sqlite3 directly? http://stackoverflow.com/questions/11769366/why-is-sqlalchemy-insert-with-sqlite-25-times-slower-than-using-sqlite3-directly from sqlalchemy.orm import scoped_session sessionmaker Base declarative_base DBSession scoped_session sessionmaker class.. DBSession scoped_session sessionmaker class Customer Base __tablename__ customer id Column Integer primary_key True name.. bind engine autoflush False expire_on_commit False Base.metadata.drop_all engine Base.metadata.create_all engine def..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python x You could say that basestring is an Abstract Base Class ABC it offers no concrete functionality to subclasses..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python base Interger to base x system using recursion in python Base 62 conversion in Python How to convert an integer to the shortest..
Python: How to “perfectly” override a dict http://stackoverflow.com/questions/3387691/python-how-to-perfectly-override-a-dict that behaves like a dict quite easily with ABC s Abstract Base Classes from the collections module. It even tells you if you..
Haversine Formula in Python (Bearing and Distance between two GPS points) http://stackoverflow.com/questions/4913349/haversine-formula-in-python-bearing-and-distance-between-two-gps-points 2 cos lat1 cos lat2 sin dlon 2 2 c 2 atan2 sqrt a sqrt 1 a Base 6371 c Bearing atan2 cos lat1 sin lat2 sin lat1 cos lat2 cos.. Bearing print print print print Horizontal Distance print Base print print Bearing print Bearing print Base2 Base 1000 distance.. print Base print print Bearing print Bearing print Base2 Base 1000 distance Base 2 Oppsite 2 2 Caltitude Oppsite Aaltitude..
Understanding Python super() and init methods http://stackoverflow.com/questions/576169/understanding-python-super-and-init-methods as to what difference there actually is in this code class Base object def __init__ self print Base created class ChildA Base.. is in this code class Base object def __init__ self print Base created class ChildA Base def __init__ self Base.__init__ self.. object def __init__ self print Base created class ChildA Base def __init__ self Base.__init__ self class ChildB Base def __init__..
Implementaion HMAC-SHA1 in python http://stackoverflow.com/questions/8338661/implementaion-hmac-sha1-in-python CONSUMER_SECRET key CONSUMER_SECRET TOKEN_SECRET # The Base String as specified here raw BASE_STRING # as specified by oauth.. . The following inputs are used to generate the Signature Base String HTTP Method for example GET Path for example http photos.example.net.. encode the whole shebang and it ends up as The Signature Base String ends up as GET http 3A 2F 2Fphotos.example.net 2Fphotos..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python some function int2base num base such that int int2base X BASE BASE X the function name argument order is unimportant For any.. function int2base num base such that int int2base X BASE BASE X the function name argument order is unimportant For any number.. argument order is unimportant For any number X and base BASE that int will accept. This is an easy function to write in fact..
Is there a Google Insights API? http://stackoverflow.com/questions/4440139/is-there-a-google-insights-api in attrs if a 0 'int' self.queries.append a 1 # ENTER THE BASE QUERY HERE base_query #This is the base query base_query s alphabet..
How to convert an integer to the shortest url-safe string in Python? http://stackoverflow.com/questions/561486/how-to-convert-an-integer-to-the-shortest-url-safe-string-in-python _' ALPHABET_REVERSE dict c i for i c in enumerate ALPHABET BASE len ALPHABET SIGN_CHARACTER ' ' def num_encode n if n 0 return.. SIGN_CHARACTER num_encode n s while True n r divmod n BASE s.append ALPHABET r if n 0 break return ''.join reversed s def.. 0 SIGN_CHARACTER return num_decode s 1 n 0 for c in s n n BASE ALPHABET_REVERSE c return n num_encode 0 'A' num_encode 64..
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