unties 0.2.0

The unit handler

# README #

To install, just:

```bash
$ easy_install unties
```

or

```bash
$ pip install unties
```

### What is this repository for? ###

* Another units-handling package
* Version 0.1


### How do I get set up? ###

* See install directions above
* No configuration options
* No dependencies
* To run tests: `python setup.py test`

### Examples ###

To use, import the Units class. I like to shorthand it as `_`, after the style
of TI calculators:

```python
>>> import unties as _
```

Or, especially if you're just playing in a python console, feel free to wildcard
import everything:

```python
>>> from unties import *
```

And you instantly have access to a ton of units and constants

Convert 11.5 'ft' to 'inch'

```python
>>> 11.5 * ft.units_of(inch)
138.00000000000003 * inch
```

As you can see from the examples, floating-point math is hard

You can call units with another unit as the argument as shorthand for
conversion. So you can do:

```python
>>> 11.5 * ft(inch)
138.00000000000003 * inch
```

Each units_group does *not* have to have the same dimensions; basic units will
be used to make up the difference:

```python
>>> mph(inch)
17.6 * inch / s

>>> hp(cal)
178.1073544430114 * cal / s

>>> acre(ft)
43559.99999999999 * ft**2
```

But this isn't always very useful, so use it responsibly

Multiple units should be grouped:

```python
>>> (yd / hr)(mm / s)
0.254 * mm / s
```

or else strange things happen:

```python
>>> yd / hr(mm / s)
2.7777777777777776e-07 * m * yd / (mm * s)
```

Please note, though, that conversion never changes the value of a measurement.
In the previous example, `2.7777777777777776e-07 * m * yd / (mm * s) == yd / hr`

To see a full list of units, use the `all_units()` method. To see all defined
constants, use the `all_constants()` method. Or take a peek in the source.

### Contribution guidelines ###

* Contributions are welcome. Just make a pull request on bitbucket.


The MIT License (MIT)

Copyright (c) 2016 Spencer Christiansen

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


All Authors and Contributors:

Spencer Christiansen