Periodic

A python API/console script for the periodic table.

Created by Luis Naranjo [email protected]

Documentation at http://periodic.readthedocs.org

Source code https://github.com/doubledubba/periodic

Installation

pip install periodic

Basic Usage

Retrieve element as an object

from periodic import element hydrogen = element('hydrogen') hydrogen.mass 1.0079

Advanced database queries (using sqlalchemy)

from periodic.table import session, Element session.query(Element).order_by(Element.mass).all()[-4:] # 4 heaviest elements (by mass) [<Element('Uup', '115')>, <Element('Uuq', '114')>, <Element('Uuh', '116')>, <Element('Uuo', '118')>]

ASCII Table

import periodic print periodic.table

1 | H | |He | |---+---- --------------------+---| 2 |Li |Be | | B | C | N | O | F |Ne | |---+---| |---+---+---+---+---+---| 3 |Na |Mg |3B 4B 5B 6B 7B | 8B |1B 2B |Al |Si | P | S |Cl |Ar | |---+---+---------------------------------------+---+---+---+---+---+---| 4 | K |Ca |Sc |Ti | V |Cr |Mn |Fe |Co |Ni |Cu |Zn |Ga |Ge |As |Se |Br |Kr | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| 5 |Rb |Sr | Y |Zr |Nb |Mo |Tc |Ru |Rh |Pd |Ag |Cd |In |Sn |Sb |Te | I |Xe | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| 6 |Cs |Ba |LAN|Hf |Ta | W |Re |Os |Ir |Pt |Au |Hg |Tl |Pb |Bi |Po |At |Rn | |---+---+---+------------------------------------------------------------ 7 |Fr |Ra |ACT|

          -------------------------------------------------------------

Lanthanide |La |Ce |Pr |Nd |Pm |Sm |Eu |Gd |Tb |Dy |Ho |Er |Tm |Yb |Lu | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| Actinide |Ac |Th |Pa | U |Np |Pu |Am |Cm |Bk |Cf |Es |Fm |Md |No |Lw | -------------------------------------------------------------

Interactive shell (Console script)

Periodic provides an originally named console script called 'periodic'.

It's usage for now is limited to periodic table reference.

In the future, it will be able to do with elements!

This interactive shell may also be invoked from the python interpreter:

import periodic periodic.interactive_shell()

Or from the command line::

$ periodic

::

Enter any of the following periodic values of the element you are looking for:
    ['atomic', 'symbol', 'name', 'mass']

Use ^C or type 'exit' to exit.
========================================================================
> 12
atomic: 12
symbol: Mg
name: Magnesium
mass: 24.305
========================================================================
> uranium
atomic: 92
symbol: U
name: Uranium
mass: 238.02891
========================================================================
> H
atomic: 1
symbol: H
name: Hydrogen
mass: 1.00794
========================================================================
> 15.9994
atomic: 8
symbol: O
name: Oxygen
mass: 15.9994
========================================================================