88fad21477
Commit Id38a1497019c7fe2d4ad8567f1c0c8d229951751 removed all of the hacking rules from the ignore list. However, the hacking doc still refers to those previouly ignored rules. Change-Id: I370be096d83cd5121d24bb96d8d5dc08a1c3c216
109 lines
3.0 KiB
ReStructuredText
109 lines
3.0 KiB
ReStructuredText
OpenStack Style Commandments
|
|
============================
|
|
|
|
- Step 1: Read the OpenStack Style Commandments
|
|
http://docs.openstack.org/developer/hacking/
|
|
- Step 2: Read on
|
|
|
|
General
|
|
-------
|
|
- thou shalt not violate causality in our time cone, or else
|
|
|
|
Docstrings
|
|
----------
|
|
|
|
Docstrings should ONLY use triple-double-quotes (``"""``)
|
|
|
|
Single-line docstrings should NEVER have extraneous whitespace
|
|
between enclosing triple-double-quotes.
|
|
|
|
Deviation! Sentence fragments do not have punctuation. Specifically in the
|
|
command classes the one line docstring is also the help string for that
|
|
command and those do not have periods.
|
|
|
|
"""A one line docstring looks like this"""
|
|
|
|
Calling Methods
|
|
---------------
|
|
|
|
Deviation! When breaking up method calls due to the 79 char line length limit,
|
|
use the alternate 4 space indent. With the first argument on the succeeding
|
|
line all arguments will then be vertically aligned. Use the same convention
|
|
used with other data structure literals and terminate the method call with
|
|
the last argument line ending with a comma and the closing paren on its own
|
|
line indented to the starting line level.
|
|
|
|
unnecessarily_long_function_name(
|
|
'string one',
|
|
'string two',
|
|
kwarg1=constants.ACTIVE,
|
|
kwarg2=['a', 'b', 'c'],
|
|
)
|
|
|
|
Text encoding
|
|
-------------
|
|
|
|
Note: this section clearly has not been implemented in this project yet, it is
|
|
the intention to do so.
|
|
|
|
All text within python code should be of type 'unicode'.
|
|
|
|
WRONG:
|
|
|
|
>>> s = 'foo'
|
|
>>> s
|
|
'foo'
|
|
>>> type(s)
|
|
<type 'str'>
|
|
|
|
RIGHT:
|
|
|
|
>>> u = u'foo'
|
|
>>> u
|
|
u'foo'
|
|
>>> type(u)
|
|
<type 'unicode'>
|
|
|
|
Transitions between internal unicode and external strings should always
|
|
be immediately and explicitly encoded or decoded.
|
|
|
|
All external text that is not explicitly encoded (database storage,
|
|
commandline arguments, etc.) should be presumed to be encoded as utf-8.
|
|
|
|
WRONG:
|
|
|
|
infile = open('testfile', 'r')
|
|
mystring = infile.readline()
|
|
myreturnstring = do_some_magic_with(mystring)
|
|
outfile.write(myreturnstring)
|
|
|
|
RIGHT:
|
|
|
|
infile = open('testfile', 'r')
|
|
mystring = infile.readline()
|
|
mytext = mystring.decode('utf-8')
|
|
returntext = do_some_magic_with(mytext)
|
|
returnstring = returntext.encode('utf-8')
|
|
outfile.write(returnstring)
|
|
|
|
Python 3.x Compatibility
|
|
------------------------
|
|
|
|
OpenStackClient strives to be Python 3.3 compatible. Common guidelines:
|
|
|
|
* Convert print statements to functions: print statements should be converted
|
|
to an appropriate log or other output mechanism.
|
|
* Use six where applicable: x.iteritems is converted to six.iteritems(x)
|
|
for example.
|
|
|
|
Running Tests
|
|
-------------
|
|
|
|
Note: Oh boy, are we behind on writing tests. But they are coming!
|
|
|
|
The testing system is based on a combination of tox and testr. If you just
|
|
want to run the whole suite, run `tox` and all will be fine. However, if
|
|
you'd like to dig in a bit more, you might want to learn some things about
|
|
testr itself. A basic walkthrough for OpenStack can be found at
|
|
http://wiki.openstack.org/testr
|