python Programming Glossary: invalidate

http://stackoverflow.com/questions/4435169/good-way-to-append-to-a-string

Py_SIZE sv newsize sv ob_sval newsize ' 0' sv ob_shash 1 invalidate cached hash value return 0 It's easy enough to verify empirically..

Caching of (fake) static content which is actually dynamic on GAE for Python

http://stackoverflow.com/questions/5512634/caching-of-fake-static-content-which-is-actually-dynamic-on-gae-for-python

only gets called once in a while for example when I invalidate the cache by importing lang strings.js v xxxx when I deploy..

Removing specific items from Django's cache?

http://stackoverflow.com/questions/720800/removing-specific-items-from-djangos-cache

caching with memcached as the backend. I would like to invalidate pages in the cache when the underlying database object changes... object changes. If the page name changes then I would invalidate the whole cache as it affects navigation on every page. Clumsy.. needs. If just the page content changes then I'd like to invalidate the cache of just that page. Is there an easy way to do this..

Lazy data-flow (spreadsheet like) properties with dependencies in Python

http://stackoverflow.com/questions/8340289/lazy-data-flow-spreadsheet-like-properties-with-dependencies-in-python

once they are calculated and the cached results should be invalidated each time the base properties are changed. I could do it manually.. reverse dependency graph # and preparing the setters that invalidate the cached values @dataflow_class class Test object def calc_a.. t.__c # a value is calculated and stored in t.__a t.b 1 # invalidates the calculated value stored in self.__a print t.a # a has been..

Google Authenticator implementation in Python

http://stackoverflow.com/questions/8529265/google-authenticator-implementation-in-python

get_hotp_token generates one time token that should invalidate after single use get_totp_token generates token based on time.. Use get_hotp_token if you want one time passwords invalidated after each use. In Google Authenticator this type of passwords..

What is the best way to get a semi long unique id (non sequential) key for Database objects

http://stackoverflow.com/questions/9877524/what-is-the-best-way-to-get-a-semi-long-unique-id-non-sequential-key-for-datab

but still has validation changing one digit will likely invalidate the whole number if chaff_val is Large Enough . def chaffify2..