Anaconda vs Sublimelinter with Jedi for SublimeText

SublimeText is undoubtedly one of the most popular editor right now over million of software / web developers. The developer is using SublimeText as IDE usually, rather than using as plain text editor,  by making  IDE like features with the help from some great packages  available in free of cost.  For python development environment, Anaconda is all-in-one package for transforming to be IDE, in the other hand Sublimtelinter with Jedi combination one of the best method for enabling sublimetext to provide IDE like features. Both two have pros and cons, i will discuss bellows about my experiences for both.

Anaconda

Pros

  1. Most importantly, this all-in-one kind package and with no dependency, that means you don’t have headache to install multiple packages and separate configurations.
  2. Easy configuration and well documented.
  3. Numbers of active contributors and continuous development, see details
  4. Very faster linting process after introducing json server.
  5. McCabe code complexity checker

Cons

  1. Some time I discovered old problem come again with latest version, that is hanging on my sublimetext (may be one of the cause could be for big file (more than ten thousands of line)).
  2. There is no support for flake8, see discussion here. Although  anaconda linting is working with pyflake and pep8 combinely means likely to be same as flake8, but more just pyflake and pep8, flake8 has lots of cool plugins, you will miss those.
  3. Working with json server might easy, depends on Operating System you are using.

Sublimelinter and Sublime-Jedi

Pros

  1. This combination approach is like that you gather all good packages and using it. Sublimelinter is the best linting framework for SublimeText, in the other hand Jedi is one the best autocomplete library that is welly ported to Sublime, thanks author of SublimeJedi
  2. Jedi provides nice (CTRL+SHIFT+G) explorer (Go Defination) feature, you could go to the reference import very quickly, beside you could easily add extra python package paths those will be auto included to Jedi’s sys path.
  3. Sublimelinter is framework for linting, there are lots of plugins available, for python I would like to use flake8 but you may keen to use pylint, that is also available.
  4. Sublimelinter is working very fast and also has lots of configuration options, so that you could customize as your wish.

Cors

  1. I don’t find so much negative side to using this combination. But I find there is not much development activity on Github.
  2. Some rare case, jedi might not working (not sure if it is caused by Sublimetext or jedi itself)

 

We saw the simple comparison between two approach. In my opinion for novice user, they could go with Anaconda as this is very easy to adapted and configure. But in contrast of beginner user of sublimetext, I would suggest, professional developer should definitely with go with Sublimelinter specially if he/she is a full stack developer as it (Sublimelinter) has variety of plugins for different language/markup i.e css, javascript, html, json, yml and more.

Make Anaconda powered SublimeText as powerful Python IDE for full stack development

Like so many SublimeText lovers, Me as a python developer, it is also one of the favorite editor, I am using but I would like to use  it as full featured IDE. You will find many articles, blogs about how SublimeText can be transformed as pure IDE, but here i will discussed about the most easy way to turn your sublimetext as IDE for full stack python development.

Anaconda  is the single package that is capable to make your editor (SublimeText) as IDE for python development. It has almost all IDE like features, i.e linting, autocomplete, etc. You could say this is all-in-one package, with no third party dependency like SublimeLinter . One of the positive things that it is in continuous development by involvement of many contributors, so you can report any bug/error and the highest possibility, we will get the solution. They have very good documentation as well.

Install and Configuration is easy enough, I would suggest you follow instruction  from their official site, for advanced configuration you could follow here. It is good practice that you make user specific settings those are common for all your projects. Follows are example user settings.

{
    "auto_formatting": true,
    "auto_python_builder_enabled": false,
    "anaconda_linting": true,
    "anaconda_linter_phantoms": false,
    "validate_imports": true,
    "enable_signatures_tooltip": false,
    "merge_signatures_and_doc": false,
    "pep8_max_line_length": 120
}

If you saw the example configuration above, I intentionally set the value of  `pep8_max_line_length` is 120 (default is 80), in the other hand you will see that i don’t mention the path of python interpreter because it should goes on project specific settings (*.sublime-project) if you use individual interpreter(i.e virtualenv) for each project.

{
	"build_systems":
	[
		{
			"file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)",
			"name": "PRS:: Anaconda Python Builder",
			"selector": "source.python",
			"shell_cmd": "{virtualenv path}/bin/python -u \"$file\""
		}
	],
	"folders":
	[
		{
			"path": "."
		}
	],
	"settings":
	{
		"python_interpreter": "{virtualenv path}/bin/python"
        }
}  

If you are using buildout for your project development, we have good news for you! There is a recipe plone.recipe.sublimetext for anaconda settings, this recipe will do for you to generate project specific settings. Followings are possible buildout settings for you (but you could do add  more custom option)

[buildout]
parts += 
     sublimetext
[sublimetext]
recipe = plone.recipe.sublimetext
eggs = ${instance:eggs}
anaconda-enabled = True
anaconda-linting-enabled = True
anaconda-completion-enabled = True
anaconda-validate-imports = True

 

LRU cache invalidation in python

I am getting sucked during writing one of unit test, because one specific function doesn’t works. After huge time spending, it is revealed that I used lru_cache that’s why it just execute one time (could be by another TestCase).

But in the test environment I need fresh result instead of serving from cache for various reasons.

After googling finally I found out real application of cache invalidation. Bellows are example

from functools import lru_cache
@lru_cache(maxsize=None)
def my_function(arg1, arg2)
   return arg1 + arg2
# Clear Cache before calling
my_function.cache_clear()
my_function(2, 2)

 

PosgreSQL `hstore` problem in django django.db.utils.ProgrammingError: type “hstore” does not exist

Migration problem while using Django‘s models Hstore fileld (posgres specific)

Django version: 1.8.3

Exception: django.db.utils.ProgrammingError: type "hstore" does not exist

Solution

  1. Create a empty migration
    1. ./manage.py makemigrations –name <migration name> <app_label> –empty
    2. example migration file.
    3. Run ./manage.py migrate
    4. No create real migration

Skype problem in Ubuntu

I have faced problems several time while trying start Skype. It doesn’t open, even trying from  terminal! instead of printing this errors
skype: symbol lookup error: /usr/lib/i386-linux-gnu/libQtOpenGL.so.4: undefined symbol: _ZNK14QWidgetPrivate17hasHeightForWidthEv

Solution

  1. Open terminal type ~$ sudo nano /etc/ld.so.conf.d/skype.conf
  2. Add this line ` /usr/lib/i386-linux-gnu/mesa/` and press Ctl+X
  3. Finally ~$ sudo ldconfig -v

* My Ubuntu version 14.04 LTS, it should work since 12.04 LTS

** Common FAQ

  • Question: I have already done above & working perfectly but when applying new updates; same problem happen.
  • Answer: Don’t panic please just follow 3 no step. ~$ sudo ldconfig -v

Credit AskUbuntu

=———————————————————–=

Another problem may facing Ubuntu user for Skype, that is Skype open just for a while and stop or could be continuous restarting. [Recently 20th Dec, 2015 I faced this problem, although my OS version is Ubuntu Server 14.04 LTS ]

Solution:

  • Make sure you have sqlite3 installed in your PC. Other than you can install it easily by following this instruction
  • Go to your terminal (CTRL + ATL +  T)
  • Precaution: The following attempts will remove all of your previous files transfer history
  • $ sqlite3 ~/.Skype/[YOURUSER}/main.db
  • > sqlite> DELETE FROM Messages WHERE type=68;
  • > .quit
  • Congratulation you are done! Try to start skype.