Examples

Importing

>>> import pyneric

Supporting recent versions Python 2 and 3 simultaneously

The future package does a great job of allowing one to support Python 2.6, 2.7, and 3.3+ with the same code base; however, some modifications that exist in the pyneric.future package can help ease or fix a few shortcomings. One can use the following to import common 2/3 compatibility features:

from __future__ import absolute_import, division, print_function, unicode_literals
from pyneric.future import *

Python identifier transformation

lower/underscore to titled-terms (pascalize function)

>>> pyneric.pascalize('basic_python_identifier')
'BasicPythonIdentifier'

titled-terms to lower/underscore (underscore function)

>>> pyneric.underscore('BasicPythonIdentifier')
'basic_python_identifier'

Get a function name from the stack

the current function name

>>> def foo():
...     return pyneric.get_function_name()
...
>>> foo()
'foo'

also further back in the stack

>>> def foo():
...     def bar():
...         return pyneric.get_function_name(1) + pyneric.get_function_name()
...     return bar()
...
>>> foo()
'foobar'

Return upon exception (tryf function)

no exception

>>> pyneric.tryf(tuple, [])
()

catch any non-system-exiting exception by default

>>> pyneric.tryf(tuple, object)

catch more specific exceptions

>>> pyneric.tryf(tuple, object, _except=TypeError)

return a different value upon exception

>>> pyneric.tryf(tuple, object, _return=())
()

Test Python identifier validity

return boolean

>>> pyneric.valid_python_identifier('not_a_keyword')
True
>>> pyneric.valid_python_identifier('class')
False
>>> pyneric.valid_python_identifier('xyz.abc', dotted=True)
True
>>> pyneric.valid_python_identifier('class.keyword', dotted=True)
False

raise exception

>>> pyneric.valid_python_identifier('not_a_keyword', exception=True)
True
>>> pyneric.valid_python_identifier('class', exception=True)
Traceback (most recent call last):
  ...
ValueError: 'class' is a Python keyword.

raise a specific exception

>>> class MyException(Exception): pass

>>> pyneric.valid_python_identifier('1nv4l1d', exception=MyException)
Traceback (most recent call last):
  ...
MyException: '1nv4l1d' is not a valid Python identifier.

Make a request to a REST resource

>>> class UserAgent(pyneric.rest_requests.RestResource): url_path = 'user-agent'

>>> headers = {'User-Agent': 'Mozilla, but not really', 'Accept': 'application/json'}

>>> str(UserAgent('http://httpbin.org').get(headers=headers).json()['user-agent'])
'Mozilla, but not really'