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A pure Python network address representation and manipulation library. netaddr provides a Pythonic way to work with :- * IPv4 and IPv6 addresses and subnets (including CIDR notation) * MAC (Media Access Control) addresses in multiple presentation formats * IEEE EUI-64, OUI and IAB ... [More] identifiers * a user friendly IP glob-style format Included are routines for :- * generating, sorting and summarizing IP addresses * converting IP addresses and ranges between various different formats * performing set based operations on groups of IP addresses and subnets * arbitrary IP address range calculations and conversions * querying IEEE OUI and IAB organisational information * querying of IP standards related data from key IANA data sources [Less]

The tz database, also called the zoneinfo database or IANA Time Zone Database, is a collaborative compilation of information about the world's time zones, primarily intended for use with computer programs and operating systems. It is sometimes called the Olson database, referring to the founding ... [More] contributor, Arthur David Olson. Paul Eggert is currently its editor and maintainer. [Less]

TZInfo is a Ruby library provides daylight savings aware transformations between times in different timezones using the IANA Timezone Database as a source of data.