`zsh` uses [square brackets for globbing / pattern matching](http://zsh.sourceforge.net/Guide/zshguide05.html#l137).

That means that if you need to pass literal square brackets as an argument to a command, you either need to escape them or quote the argument like this:


    pip install &#39;requests[security]&#39;


If you want to disable [globbing](http://en.wikipedia.org/wiki/Glob_%28programming%29) for the `pip` command permanently, you can do so by adding this to your `~/.zshrc`:

    alias pip=&#39;noglob pip&#39;

Is there a pseudo-class in CSS to specify 

    :not(:hover)

Or is that the only way to specify an item that is not being hovered?

I went through several CSS3 references, and I see no mention of a CSS pseudo-class to specify the opposite of :hover.

Is there an opposite CSS pseudo-class to :hover?

In android studio with build variant set to &quot;debug&quot; mode, I found two outputs of apk 

 - app-debug.apk
 - app-debug-unaligned.apk

What is the differences between those files?


Difference between app-debug.apk and app-debug-unaligned.apk

I am trying to run a python urllib2 script and getting this error:

&gt; InsecurePlatformWarning: A true SSLContext object is not available.
&gt; This prevents urllib3 from configuring SSL appropriately and may cause
&gt; certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.

After googling the error the solution, on stack overflow is to download requests&#39; security package:
&lt;br&gt;&lt;code&gt;pip install requests[security]&lt;/code&gt;

But when I run that I get the error...

&gt;zsh: no matches found: requests[security]

Anyone know why zsh isn&#39;t picking up this library, it installs/upgrades requests just fine, I don&#39;t know why this isn&#39;t working

I am running this on a Debian Server...



zsh: no matches found: requests[security]

I am trying to run a python urllib2 script and getting this error:
> InsecurePlatformWarning: A true SSLContext object is not available.
> This prevents urllib3 from configuring SSL appropriately and may cause
> certain SSL connections to fail. For more information, see <a href="https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning" target="_blank" rel="noopener noreferrer">https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning</a>.
After googling the error the solution, on stack overflow is to download requests' security package:
 <code>pip install requests[security]</code>
But when I run that I get the error...
>zsh: no matches found: requests[security]
Anyone know why zsh isn't picking up this library, it installs/upgrades requests just fine, I don't know why this isn't working
I am running this on a Debian Server...

I&#39;m trying to install package with pip on Ubuntu server:

    $ pip install MySQLdb
    Downloading/unpacking MySQLdb
    Killed

And it&#39;s getting killed. There is enough free RAM on server. Why it is killed?

UPD
Logs:

&gt; Out of memory: Kill process 6627 (pip) score 297 or sacrifice child

Thats strange, because I have about 150 mb free RAM.

pip install - killed

I&#39;m trying to run a simple web server on a Raspberry Pi with Flask. When I run my Flask app, it says:

&gt; running on http://127.0.0.1:5000/

But when I enter this address on my laptop&#39;s in Chrome, I get 

&gt; ERR_CONNECTION_REFUSED

I can open 127.0.0.1:5000 on the Raspberry Pi&#39;s browser. What do I need to do to connect from another computer?

Can&#39;t connect to Flask web service, connection refused

All of the tutorials I see online show how to create classes with `__init__` constructor methods so one can declare objects of that type, or instances of that class.

How do I create a class (static in Java) so that I can access all methods and attributes of that class *without* having to create new instances/objects?

For example:

    class World:
    
        allElems = []
    
        def addElem(x):  
    
            allElems.append(x)

    World.addElem(6)
    print(World.allElems)


------------------------------------------
EDIT
------------------------------------------

    class World(object):
    
        allAirports = []
    
        @staticmethod
        def initialize():
    
            f = open(os.path.expanduser(&quot;~/Desktop/1000airports.csv&quot;))
            file_reader = csv.reader(f)
    
            for col in file_reader:
    
                allAirports.append(Airport(col[0],col[2],col[3]))

error: name &#39;allAirports&#39; is  not defined

Creating a static class with no instances

So I tried the &quot;evil&quot; thing Ned Deily mentioned in his answer [here][1]. Now I have that the type True is now always False. How would I reverse this within the interactive window?

Thing to not do:

    True = False

Since True has now been completely overridden with False, there doesn&#39;t seem to be an obvious way to back-track. Is there a module that True comes from that I can do something like:

    True = &lt;&#39;module&#39;&gt;.True


  [1]: https://stackoverflow.com/questions/12765833/counting-the-number-of-true-booleans-in-a-python-list/12766000#12766000

How do I undo True = False in python interactive mode?

Right now I have:

    timestamp = datetime.strptime(date_string, &#39;%Y-%m-%d %H:%M:%S.%f&#39;)

This works great unless I&#39;m converting a string that doesn&#39;t have the microseconds.  How can I specify that the microseconds are optional (and should be considered 0 if they aren&#39;t in the string)?

python strptime format with optional bits

While I am aware of the option of [installing Pip from source](https://pip.pypa.io/en/latest/installing.html), I&#39;m trying to avoid going down that path so that updates to Pip will be managed by Cygwin&#39;s package management.

I&#39;ve [recently learned](https://stackoverflow.com/a/12476379/2489598) that the latest versions of Python include Pip.  However, even though I have recently installed the latest versions of Python from the Cygwin repos, Bash doesn&#39;t recognize a valid Pip install on the system.

    896/4086 MB RAM 0.00 0.00 0.00 1/12 Tue, Jun 16, 2015 ( 3:53:22am CDT) [0 jobs]
    [ethan@firetail: +2] ~ $ python -V
    Python 2.7.10
    892/4086 MB RAM 0.00 0.00 0.00 1/12 Tue, Jun 16, 2015 ( 3:53:27am CDT) [0 jobs]
    [ethan@firetail: +2] ~ $ python3 -V
    Python 3.4.3
    883/4086 MB RAM 0.00 0.00 0.00 1/12 Tue, Jun 16, 2015 ( 3:53:34am CDT) [0 jobs]
    [ethan@firetail: +2] ~ $ pip
    bash: pip: command not found
    878/4086 MB RAM 0.00 0.00 0.00 1/12 Tue, Jun 16, 2015 ( 3:53:41am CDT) [0 jobs]
    [ethan@firetail: +2] ~ $ pip2
    bash: pip2: command not found
    876/4086 MB RAM 0.00 0.00 0.00 1/12 Tue, Jun 16, 2015 ( 3:53:42am CDT) [0 jobs]
    [ethan@firetail: +2] ~ $ pip3
    bash: pip3: command not found

Note that the installed Python 2.7.10 and Python 3.4.3 are both recent enough that they should include Pip.

Is there something that I might have overlooked?  Could there be a new install of Pip that isn&#39;t in the standard binary directories referenced in the $PATH?  If the Cygwin packages of Python do in fact lack an inclusion of Pip, is that something that&#39;s notable enough to warrant a bug report to the Cygwin project?

Installing new versions of Python on Cygwin does not install Pip?

I have tried using pip with index-url in `pip.conf`. However, i  can not make sure that we can get all the necessary python library. So, i want to know if pip support specify more than one `index-url` in `[global]` section in `pip.conf`.

Can pip.conf specify two index-url at the same time?

I can&#39;t use pip3 though python3-pip has already been installed. How to solve the problem?

    sudo pip3 install virtualenv
    sudo: pip3: command not found
    
    sudo apt-get install python3-pip
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    python3-pip is already the newest version.
    0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

pip3: command not found but python3-pip is already installed

After installing a package in an anaconda environment, I&#39;ll like to make some changes to the code in that package.

Where can I find the `site-packages` directory containing the installed packages? I do not find a directory `/Users/username/anaconda/lib/python2.7/site-packages`

Anaconda site-packages

I&#39;m using [Requests][1] to upload a PDF to an API. It is stored as &quot;response&quot; below. I&#39;m trying to write that out to Excel.

    import requests

    files = {&#39;f&#39;: (&#39;1.pdf&#39;, open(&#39;1.pdf&#39;, &#39;rb&#39;))}
    response = requests.post(&quot;https://pdftables.com/api?&amp;format=xlsx-single&quot;,files=files)
    response.raise_for_status() # ensure we notice bad responses
    file = open(&quot;out.xls&quot;, &quot;w&quot;)
    file.write(response)
    file.close()

I&#39;m getting the error:

    file.write(response)
    TypeError: expected a character buffer object


  [1]: http://docs.python-requests.org/en/latest/api/

Saving response from Requests to file

I&#39;m trying to send an array(list) of requests to the WheniWork API using requests.post, and I keep getting one of two errors. When I send the list as a list, I get an unpacking error, and when I send it as a string, I get an error asking me to submit an array. I think it has something to do with how requests handles lists. Here are the examples:

    url=&#39;https://api.wheniwork.com/2/batch&#39;
	headers={&quot;W-Token&quot;: &quot;Ilovemyboss&quot;}
    data=[{&#39;url&#39;: &#39;/rest/shifts&#39;, &#39;params&#39;: {&#39;user_id&#39;: 0,&#39;other_stuff&#39;:&#39;value&#39;}, &#39;method&#39;:&#39;post&#39;,{&#39;url&#39;: &#39;/rest/shifts&#39;, &#39;params&#39;: {&#39;user_id&#39;: 1,&#39;other_stuff&#39;:&#39;value&#39;}, &#39;method&#39;:&#39;post&#39;}]
    r = requests.post(url, headers=headers,data=data)
    print r.text

    # ValueError: too many values to unpack

Simply wrapping the value for data in quotes:

    url=&#39;https://api.wheniwork.com/2/batch&#39;
	headers={&quot;W-Token&quot;: &quot;Ilovemyboss&quot;}
    data=&quot;[]&quot; #removed the data here to emphasize that the only change is the quotes
    r = requests.post(url, headers=headers,data=data)
    print r.text

    #{&quot;error&quot;:&quot;Please include an array of requests to make.&quot;,&quot;code&quot;:5000}



How to send an array using requests.post (Python)? &quot;Value Error: Too many values to unpack&quot;

I am trying to login to a page and access another link in the page.


    payload={&#39;username&#39;=&lt;username&gt;,&#39;password&#39;=&lt;password&gt;}
    with session() as s:
        r = c.post(&lt;URL&gt;, data=payload)
        print r
        print r.content
    
This is giving me a &quot;405 Not Allowed&quot; error.
I checked the post method details using chrome developer tools and could see an api (URL/api/auth).
I posted to that URL with the payload and it was working and i was getting a response similar to what i could see in the developer.

Unfortunately when trying to &#39;get&#39; another url after login, i am still getting the content from the login page. 
Why is the login not sticking? Should i use cookies?
I am a newbie, so i don&#39;t really know how to work with cookies.


How to use cookies in Python Requests

I&#39;m using the Python [requests lib][1] to get a PDF file from the web. This works fine, but I now also want the original filename. If I go to a PDF file in Firefox and click `download` it already has a filename defined to save the pdf. How do I get this filename?

For example:

    import requests
    r = requests.get(&#39;http://www.researchgate.net/profile/M_Gotic/publication/260197848_Mater_Sci_Eng_B47_%281997%29_33/links/0c9605301e48beda0f000000.pdf&#39;)
    print r.headers[&#39;content-type&#39;]  # prints &#39;application/pdf&#39;

I checked the `r.headers` for anything interesting, but there&#39;s no filename in there. I was actually hoping for something like `r.filename`..

Does anybody know how I can get the filename of a downloaded PDF file with requests library?


  [1]: http://docs.python-requests.org/en/latest/

How to get pdf filename with Python requests?

I am trying to import `requests` module, but I got this error
my python version is 3.4 running on ubuntu 14.04

    &gt;&gt;&gt; import requests
    Traceback (most recent call last):
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/packages/urllib3/connectionpool.py&quot;, line 10, in &lt;module&gt;
        from queue import LifoQueue, Empty, Full
    ImportError: cannot import name &#39;LifoQueue&#39;

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/__init__.py&quot;, line 58, in &lt;module&gt;
       from . import utils
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/utils.py&quot;, line 26, in &lt;module&gt;
        from .compat import parse_http_list as _parse_list_header
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/compat.py&quot;, line 7, in &lt;module&gt;
        from .packages import chardet
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/packages/__init__.py&quot;, line 3, in &lt;module&gt;
        from . import urllib3
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/packages/urllib3/__init__.py&quot;, line 10, in &lt;module&gt;
        from .connectionpool import (
      File &quot;/usr/local/lib/python3.4/dist-packages/requests/packages/urllib3/connectionpool.py&quot;, line 12, in &lt;module&gt;
        from Queue import LifoQueue, Empty, Full
    ImportError: No module named &#39;Queue&#39;


ImportError: No module named &#39;Queue&#39;

I wasn&#39;t able to find a documentation for the widely used `autoload` command in zsh. Does anybody can explain it in plain English?

A bit more specific: What does *autoloading of modules* mean, for example in this line:

&lt;pre&gt;
autoload -Uz vcs_info
&lt;/pre&gt;
What does it do?

___

I&#39;ve tried `autoload --help`, `man autoload`, googling - no success. Thanks!

What does autoload do in zsh?

I installed zsh on my Mac. and now i want to make it the default shell instead of Bash. But I seem to be running into the following error:

    $ echo $SHELL
    /bin/bash
    $ chsh -s /usr/bin/zsh
    Changing shell for harshamv.
    Password for harshamv:
    chsh: /usr/bin/zsh: non-standard shell

Making ZSH default Shell in MacOSX

So I installed **Anaconda** and everything is working. After I installed it I decided to switch to `oh-my-zsh`. I am now getting:


    zsh: command not found: conda



when trying to use `pip` or `conda` installs

    echo $ZSH_VERSION

&gt; 5.0.5



I have added to my `zshenv.sh` 


    export PATH =&quot;/Users/Dz/anaconda/bin:$PATH&quot;


What is it that I&#39;m missing?

Zsh: Conda/Pip installs command not found

How would I hide the computer name in the prompt while using the terminal?

At the moment it shows both username and computer name like so:

![iTerm screenshot of user prompt][1]

It would save some space by removing `anwarchoukah@anwars-mbp`, seeing as I actually know who I am:)

  [1]: http://i.stack.imgur.com/cN6tN.png

ZSH: Hide computer name in terminal

I was trying to create a branch from `master` with the following command,

    git branch SSLOC-201_Implement___str__()_of_ProductSearchQuery

when Git suddenly stopped responding. I suspect the unescaped `()` are to blame, somehow. Now, whenever I try to run any Git command, I get the same error:

    git:176: command not found: _of_ProductSearchQuery

with the number after `git` increasing every time I type a command.

Can anyone explain what happened? And how do I get back to normal? I&#39;d like to delete that branch, but how can I do that?

Content Type	Original Author	Original Content on Stackoverflow
Question	Kristen	View Question on Stackoverflow
Solution 1 - Python	Lukas Graf	View Answer on Stackoverflow

zsh: no matches found: requests[security]

Python Problem Overview

Python Solutions

Solution 1 - Python

Difference between app-debug.apk and app-debug-unaligned.apk

Is there an opposite CSS pseudo-class to :hover?

Attributions