The command to enable syntax highlighting in vim is `:syntax on`, if you want it to be active everytime you launch vim, just add a line containing `syntax on` in your .vimrc file.

Put the line `syntax on` in your `.vimrc`.

1. Verify that you have the latest version of vim, equally execute `sudo apt-get install vim`
2. Modify the `.vimrc` file with the instruction `echo &quot;syntax on&quot; &gt;&gt; ~/.vimrc`  
3. Open the file with `vi app.py`. You will see the **Syntax highlighting** 

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/85N09.png

If you&#39;re on *nix system (linux, macos) or cygwin and if you already have vim `:set syntax` set but your filename doesn&#39;t end with `.py` you can add a shebang to the first line of your file:


    #!/usr/bin/env python 

Next time you open the file in vim, you should see syntax highlighting. Note this will work for other file types, you just use the interpreter name i.e. `(python, ruby, sh)` 

What&#39;s the C99 boolean data type and how to use it?

C99 boolean data type?

Is there a `map` method in Groovy? I want to do something like I do with the following Scala snippet:

    scala&gt; val l = List(1, 2, 3)
    l: List[Int] = List(1, 2, 3)
    
    scala&gt; l.map(_ + 1)
    res0: List[Int] = List(2, 3, 4)

Groovy map method of collections

How do I do I set the syntax highlighting in Vim 7 for python?

I would like to set my own colorschemes, and syntax highlighting for a type of code file.

Syntax highlighting in vim for python

<p>How do I do I set the syntax highlighting in Vim 7 for python?</p>
<p>I would like to set my own colorschemes, and syntax highlighting for a type of code file.</p>


I have two classes A and B and A is base class of B.

I read that all methods in Python are virtual. 

So how do I call a method of the base because when I try to call it, the method of the derived class is called as expected?

    &gt;&gt;&gt; class A(object):
    	def print_it(self):
    		print &#39;A&#39;
    
    		
    &gt;&gt;&gt; class B(A):
    	def print_it(self):
    		print &#39;B&#39;
    
    		
    &gt;&gt;&gt; x = B()
    &gt;&gt;&gt; x.print_it()
    B
    &gt;&gt;&gt; x.A ???





Calling base class method in Python

[`pip`][1] is a replacement for [`easy_install`][2]. But should I install `pip` using `easy_install` on Windows? Is there a better way?

  [1]: https://pip.pypa.io/en/stable/
  [2]: http://setuptools.readthedocs.io/en/latest/easy_install.html


How can I install pip on Windows?

Having something like

 - created_by 
 - created_date 
 - modified_by
 - modified_date

Would be a very common pattern for a lot of tables.

1) You can set created date automatically (but not others) in model.py with

    created_date = models.DateTimeField(auto_now_add=True, editable=False)

2) You could do created/modified dates (but not by/user as don&#39;t have request context) in model.py with

    def save(self):
        if self.id:
            self.modified_date = datetime.now()
        else:
            self.created_date = datetime.now()
        super(MyModel,self).save()

3) You could set the created/modifed date and by in admin.py - but this doesn&#39;t deal with non admin updates

    def save_model(self, request, obj, form, change):
        if change:
            obj.modified_by = request.user
            obj.modified_date = datetime.now()
        else:
            obj.created_by = request.user
            obj.created_date = datetime.now()
        obj.save()

4) And the final place would be in the view.py which can do all 4, but doesn&#39;t cover admin updates.

So realistically have to have logic spread out, at a minimum repeated in 3 &amp; 4 (or a method on the model called from both, which will be missed)

Whats a better way?  (I&#39;ve been working with python/django for a couple of days so could easily be missing something obvious)

  - Can you do someting like @login_required e.g. @audit_changes
  - Can you get access to the request and current user in the model and centralise logic there?

DRY way to add created/modified by and time

What file do I edit, and how? I created a virtual environment.

How do you set your pythonpath in an already-created virtualenv?

I want to write a function that will execute a shell command and return its output **as a string**, no matter, is it an error or success message. I just want to get the same result that I would have gotten with the command line.

What would be a code example that would do such a thing?

For example:

    def run_command(cmd):
        # ??????

    print run_command(&#39;mysqladmin create test -uroot -pmysqladmin12&#39;)
    # Should output something like:
    # mysqladmin: CREATE DATABASE failed; error: &#39;Can&#39;t create database &#39;test&#39;; database exists&#39;



Running shell command and capturing the output

When I use Vim&#39;s `J` command, most lines are joined with a single space for padding. But after a period Vim always uses two spaces. Take the following example:

    This ends with a comma,
    but this ends with a period.
    Join with &#39;J&#39; and what do you get?

For me, the result is:

    This ends with a comma, but this ends with a period.  Join with &#39;J&#39; and what do you get?

One space after the comma, two after the period. Same story if you reformat the paragraph with the `gq` command.

Is there a setting that I can modify to make Vim use only one space after the period?


How can I make Vim&#39;s `J` and `gq` commands use one space after a period?

I&#39;ve done some searching and found a wealth of information on binding keys in vim, but I can&#39;t find out, for sure, how to map shift-tab. Or what command I need to map it to for it to &quot;tab backwards&quot;. 

This is what I have at the moment:

    map &lt;S-tab&gt; &lt;S-,&gt;&lt;S-,&gt;


Possibly Relevant Information:
I&#39;m running Debian with Terminal 2.22.3. with VIM - Vi IMproved 7.1 




Map shift-tab in vim to inverse tab in Vim

I&#39;m new to JS &amp; Vim. Which plugins would help me to write Javascript code?

Recommended Vim plugins for JavaScript coding?

When I&#39;m in insert mode and I have the [`expandtab`](https://vimhelp.org/options.txt.html#%27expandtab%27) option switched on, pressing &lt;kbd&gt;Tab ↹&lt;/kbd&gt; results in inserting the configured number of spaces.

But occasionally I want to insert an actual tab character.

Do you know how to do this?


How to insert tab character when expandtab option is on in Vim

How do I enable automatic folding in Vim?  `set foldmethod=syntax` doesn&#39;t seem to do much of anything.  


How do I enable automatic folds in Vim?

I&#39;m updating my old .aspx views with the new Razore view engine. I have a bunch of places where I have code like this:

    &lt;span class=&quot;vote-up&lt;%= puzzle.UserVote == VoteType.Up ? &quot;-selected&quot; : &quot;&quot; %&gt;&quot;&gt;Vote Up&lt;/span&gt;

Ideally I&#39;d like to do this:

    &lt;span class=&quot;vote-up@{puzzle.UserVote == VoteType.Up ? &quot;-selected&quot; : &quot;&quot;}&quot;&gt;Vote Up&lt;/span&gt;

However there&#39;s two problems here:

 1. `vote-up@{puzzle.UserVote` .... is not treating the @ symbol as a start of a code block
 2. `@puzzle.UserVote == VoteType.Up` looks at the first part `@puzzle.UserVote` as if it&#39;s supposed to render the value of the variable.

Anyone know how to address these issues?

How to use ? : if statements with Razor and inline code blocks

I first saw it used in building regular expressions across multiple lines as a method argument to `re.compile()`, so I assumed that `r` stands for RegEx.

For example:

	regex = re.compile(
		r&#39;^[A-Z]&#39;
		r&#39;[A-Z0-9-]&#39;
		r&#39;[A-Z]$&#39;, re.IGNORECASE
	)

So what does `r` mean in this case? Why do we need it?

What does preceding a string literal with &quot;r&quot; mean?

How do you write a comment in Markdown, i.e. text that is not rendered in the HTML output? I found nothing on the [Markdown project][1].


  [1]: http://daringfireball.net/projects/markdown/

Comments in Markdown

I saw `1/3.f` in a program and wondered what the `.f` was for. So tried my own program:

    #include &lt;iostream&gt;

    int main()
    {
        std::cout &lt;&lt; (float) 1/3 &lt;&lt; std::endl;
        std::cout &lt;&lt; 1/3.f &lt;&lt; std::endl;
        std::cout &lt;&lt; 1/3 &lt;&lt; std::endl;
    }

Is the `.f` used like a cast? Is there a place where I can read more about this interesting syntax?




Purpose of a &quot;.f&quot; appended to a number?

I was reading through some JMockit examples and found this code:

    final List&lt;OrderItem&gt; actualItems = new ArrayList&lt;~&gt;();

What does the tilde in the generic identifier mean? I know it&#39;s the unary bitwise NOT operator, but I don&#39;t see an operand here.

Also, I tried compiling it and got an error. Am I just missing something?

What does a tilde in angle brackets mean when creating a Java generic class?

I was wondering if there&#39;s a way to return to the previous line you were on in Vim.

Say, for example, I&#39;m writing C code and I just wanted to add an `#include` at the top of the page: I press `gg` and go to the top, add the `#include`, and then I want to return to the line I left off of.

Is this possible in Vim? 


Returning to previous line with Vim

Is there a way to move the cursor a relative amount of lines in vi/vim? Say you have the cursor 10 lines under a block of code you want to remove. If you have the line numbers shown in relative order, it would be nice to have a &quot;jump 10 lines up command&quot; that would take you there.

Or perhaps it&#39;s better to have the absolute line numbers shown and go xgg where x is the line number?

Move cursor x lines from current position in vi/vim

 1. When I open the file it looks like this: 
![enter image description here][1]
 or even this 
![enter image description here][2]
 2. When I open all folds, they are closed again when I navigated to another buffer and came back. 
 3. To be able to work with it, I have to apply `zR` each time when opening a buffer.

I have these set up in `.vimrc`:

    set foldlevelstart=99
    set foldlevel=99

Please point me on how to disable the folding, or at least making the navigation to another buffer not to close the opened ones.


  [1]: http://i.stack.imgur.com/fbmqn.png
  [2]: http://i.stack.imgur.com/6DpUG.png

Confusion about vim folding - how to disable?

In Vim&#39;s normal mode:

 * &lt;kbd&gt;e&lt;/kbd&gt; goes to the end of the next word
 * &lt;kbd&gt;w&lt;/kbd&gt; goes to the beginning of the next word
 * &lt;kbd&gt;b&lt;/kbd&gt; goes to the beginning of the previous word

How do you move the cursor to the *end* of the *previous* word?

In Vim/Vi, how do you move the cursor to the end of the previous word?

I am trying to create a new file with NERDTree. I hit the &lt;kbd&gt;a&lt;/kbd&gt; key to create a new file and I get the message:

`E21: Cannot make changes, &#39;Modifiable&#39; is off`


I&#39;m using MacVim with Janus (almost out of the box).

vim &quot;modifiable&quot; is off

I know how to turn syntax highlighting on and off in vim by running this in the editor:

    :syntax on/off

But I want syntax highlighting to be enabled by default, so I don&#39;t have to turn it on every time I run vim.

How do I do this?

Enable Vim Syntax Highlighting By Default

I&#39;m trying to add Go language syntax highlighting to VIM on ubuntu with resources and direction supplied here http://go-lang.cat-v.org/text-editors/vim/.

Go comes with a `go.vim` file that contains syntax settings for VIM and the above page offers the following instructions

**Place $GOROOT/misc/vim/syntax/go.vim in ~/.vim/syntax/ and put the following in ~/.vim/ftdetect/go.vim:**

    au BufRead,BufNewFile *.go set filetype=go 

This is more or less the same vein of procedure for customizing vim syntax I&#39;ve seen elsewhere
(https://stackoverflow.com/questions/12962233/vim-7-3-on-ubuntu-12-10-doesnt-have-ftplugin-directory-anywhere and https://github.com/jnwhiteh/vim-golang/blob/master/readme.txt)

So I think I&#39;m doing the right thing when I create directories:&lt;br&gt;
~/.vim&lt;br&gt;
~/.vim/syntax&lt;br&gt;
~/.vim/ftdetect&lt;br&gt;

and follow the above instructions by adding 

go.vim to ~/.vim/syntax/
and creating a file, go.vim, in ~/.vim/ftdetect/ which contains

    au BufRead,BufNewFile *.go set filetype=go


 Yet syntax highlighting does not seem to occur. Is there something I need to do to force VIM to look at these new settings files?





  

Add GoLang syntax highlighting for VIM

I&#39;ve installed a fresh Arch Linux system on my laptop and downloaded the vim package.

I haven&#39;t altered the .vimrc file, but the syntax highlighting doesn&#39;t seem to work with any of the languages I tried (Python, Ruby, CSharp, C...).

Auto formatting (gg, =, G) also fails.

Until now when playing with vim (because I can&#39;t really say I&#39;ve extensively used it) in other OSs (Ubuntu, Fedora), the syntax highlighting came on automatically.
Is there something I am missing here?

Content Type	Original Author	Original Content on Stackoverflow
Question	hidroto	View Question on Stackoverflow
Solution 1 - Python	mdeous	View Answer on Stackoverflow
Solution 2 - Python	Robie Basak	View Answer on Stackoverflow
Solution 3 - Python	Revol89	View Answer on Stackoverflow
Solution 4 - Python	lacostenycoder	View Answer on Stackoverflow

Syntax highlighting in vim for python

Python Problem Overview

Python Solutions

Solution 1 - Python

Solution 2 - Python

Solution 3 - Python

Solution 4 - Python

Groovy map method of collections

C99 boolean data type?

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