try

    data = twitchdata.decode().split(&quot;:&quot;)[1]

instead of

    data = twitchdata.split(&quot;:&quot;)[1]



So, its like our normal bank accounts where we have a lot of transactions which result in inflow or outflow of money. The account balance can always be derived by simply summing up the transaction values. What would be better in this case, storing the updated account balance in the database or re-calculating it whenever needed?

Expected transaction volume per account: &lt;5 daily

Expected retrieval of account balance: Whenever a transaction happens and once a day on an average otherwise. 

How would you suggest to take a decision on this? 
Thanks a lot!

Derived account balance vs stored account balance for a simple bank account?

I couldn&#39;t find any better example for using `RecyclerView` with `StaggeredGridLayoutManager`. Not even in [Android Docs][1].

&gt;**Q1.** I need some examples which can give proper explanation about how to use `RecyclerView` with `StaggeredGridLayoutManager`.
&gt;
&gt;**Q2.** Can anyone tell me if it is possible to create following layout using `RecyclerView` with `StaggeredGridLayoutManager` 

![example][2]

So far i have found this [link][3] which is not at all useful.

I also found this [link][4] for cardslib but it is too much complex in implementation and has too much dependencies which will increase my app size unnecessarily.


  [1]: https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager.html
  [2]: http://i.stack.imgur.com/363QI.png
  [3]: http://android-pratap.blogspot.in/2015/01/using-linearlayoutmanager.html
  [4]: https://github.com/gabrielemariotti/cardslib

No good example about RecyclerView and StaggeredGridLayoutManager in Android Docs

I&#39;m moving my Twitch bot from Python 2.7 to Python 3.5. I keep getting the error: 
`a bytes like object is required not &#39;str&#39;` on the 2nd line of the code below.

    twitchdata = irc.recv(1204)
        data = twitchdata.split(&quot;:&quot;)[1]
        twitchuser = data.split(&quot;!&quot;)[0]
        twitchmsg = twitchdata.split(&quot;:&quot;)[2]
        chat = str(twitchuser) +&quot;: &quot;+ str(twitchmsg)
        print(chat) #prints chat to console

Python - a bytes like object is required, not str

I'm moving my Twitch bot from Python 2.7 to Python 3.5. I keep getting the error:
<code>a bytes like object is required not 'str'</code> on the 2nd line of the code below.
<pre><code class="hljs language-ini">twitchdata = irc.recv(1204)
 data = twitchdata.split(":")[1]
 twitchuser = data.split("!")[0]
 twitchmsg = twitchdata.split(":")[2]
 chat = str(twitchuser) +": "+ str(twitchmsg)
 print(chat) #prints chat to console
</code></pre>

I&#39;m creating a heatmap from a pandas pivot_table as below:

    table2 = pd.pivot_table(df,values=&#39;control&#39;,columns=&#39;Year&#39;,index=&#39;Region&#39;,aggfunc=np.sum)
    sns.heatmap(table2,annot=True,cmap=&#39;Blues&#39;)

It creates a heat map as shown below. You can see the numbers are not huge (max 750), but it&#39;s showing them in scientific notation. If I view the table itself this is not the case. Any idea on how I could get it to show the numbers in plain notation?

![Heatmap][1]


  [1]: http://i.stack.imgur.com/iE5eh.png

Seaborn showing scientific notation in heatmap for 3-digit numbers

    a = {&#39;a&#39;, &#39;b&#39;, &#39;c&#39;} 
    b = {&#39;d&#39;, &#39;e&#39;, &#39;f&#39;}

I want to add above two set values. I need output like

    c = {&#39;a&#39;, &#39;b&#39;, &#39;c&#39;, &#39;d&#39;, &#39;e&#39;, &#39;f&#39;}




How do I add two sets?

How can I convert `Gregorian date` to `Persian date` and vice-versa in `Python`?

[All I found][1] was some widgets and stuffs which will create Persian Calendar. I don&#39;t want a Persian calendar. I just want to convert dates to each other.
So how can I do that?


  [1]: https://github.com/behzadi/persianDatepicker

Convert Gregorian (Christian) date to Persian date and vice-versa in Python

I have a numpy array where each cell of a specific row represents a value for a feature. I store all of them in an 100*4 matrix.

    A     B   C
    1000  10  0.5
    765   5   0.35
    800   7   0.09  

Any idea how I can normalize rows of this numpy.array where each value is between 0 and 1?

My desired output is:

    A     B    C
    1     1    1
    0.765 0.5  0.7
    0.8   0.7  0.18(which is 0.09/0.5)

Thanks in advance :)
 

Normalize numpy array columns in python

I have a Python (2.7) app which is started in my dockerfile:

    CMD [&quot;python&quot;,&quot;main.py&quot;]

*main.py* prints some strings when it is started and goes into a loop afterwards:

    print &quot;App started&quot;
    while True:
        time.sleep(1)

As long as I start the container with the -it flag, everything works as expected:

    $ docker run --name=myapp -it myappimage
    &gt; App started

And I can see the same output via logs later:

    $ docker logs myapp
    &gt; App started

If I try to run the same container with the -d flag, the container seems to start normally, but I can&#39;t see any output:

    $ docker run --name=myapp -d myappimage
    &gt; b82db1120fee5f92c80000f30f6bdc84e068bafa32738ab7adb47e641b19b4d1
    $ docker logs myapp
    $ (empty)

But the container still seems to run;

    $ docker ps
    Container Status ...
    myapp     up 4 minutes ... 

Attach does not display anything either:

    $ docker attach --sig-proxy=false myapp
    (working, no output)

Any ideas whats going wrong? Does &quot;print&quot; behave differently when ran in background?

Docker version:

    Client version: 1.5.0
    Client API version: 1.17
    Go version (client): go1.4.2
    Git commit (client): a8a31ef
    OS/Arch (client): linux/arm
    Server version: 1.5.0
    Server API version: 1.17
    Go version (server): go1.4.2
    Git commit (server): a8a31ef


Python app does not print anything when running detached in docker

I updated a Django 1.7 project to Django 1.8 and now get errors when I run the tests (that are subclasses of `django.test.TestCase`).

    Traceback (most recent call last):
      File &quot;env\lib\site-packages\django\test\testcases.py&quot;, line 962, in tearDownClass
    cls._rollback_atomics(cls.cls_atomics)
      AttributeError: type object &#39;SomeTests&#39; has no attribute &#39;cls_atomics&#39;

If I debug through the test I can step through all lines without problems, but after the last line the exception is thrown.

This is an example test:

	import django
	import unittest
	from django.test import TestCase
	import logging
	import sys
	from builtins import classmethod, isinstance

	class ATestTests(TestCase):

		@classmethod
		def setUpClass(cls):
			django.setup()
			logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)


		def setUp(self):
			self._app = Application(name=&quot;a&quot;)


		def testtest(self):

			self.assertIsNotNone(self._app)


My environment:

	astroid==1.3.4
	colorama==0.3.3
	defusedxml==0.4.1
	Django==1.8
	django-extensions==1.5.2
	django-filter==0.9.2
	djangorestframework==3.0.5
	djangorestframework-xml==1.0.1
	eight==0.3.0
	future==0.11.4
	logilab-common==0.63.2
	Markdown==2.5.2
	pylint==1.4.1
	python-dateutil==2.4.1
	python-mimeparse==0.1.4
	six==1.9.0
	xmltodict==0.9.2

How can I fix this?



Update to Django 1.8 - AttributeError: django.test.TestCase has no attribute &#39;cls_atomics&#39;

For some reason I cannot figure out why Django isn&#39;t handling my `request.body` content correctly.

It is being sent in `JSON` format, and looking at the `Network` tab in Dev Tools shows this as the request payload:

    {creator: &quot;creatorname&quot;, content: &quot;postcontent&quot;, date: &quot;04/21/2015&quot;}

which is exactly how I want it to be sent to my API.

In Django I have a view that accepts this request as a parameter and just for my testing purposes, should print `request.body[&quot;content&quot;]` to the console. 

Of course, nothing is being printed out, but when I print `request.body` I get this:

    b&#39;{&quot;creator&quot;:&quot;creatorname&quot;,&quot;content&quot;:&quot;postcontent&quot;,&quot;date&quot;:&quot;04/21/2015&quot;}&#39;

so I know that I *do* have a body being sent.

I&#39;ve tried using `json = json.loads(request.body)` to no avail either. Printing `json` after setting that variable also returns nothing.

Trying to parse `request.body` from POST in Django

I&#39;ve installed Python 3.5 and while running

```lang-none
pip install mysql-python
```

it gives me the following error

&gt; error: Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)

I have added the following lines to my Path

```lang-none
C:\Program Files\Python 3.5\Scripts\;
C:\Program Files\Python 3.5\;

C:\Windows\System32;
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC;
C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC
```

I have a 64-bit Windows&amp;nbsp;7 setup on my PC.

What could be the solution for mitigating this error and installing the modules correctly via `pip`.





Error &quot;Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)&quot;

To clarify the reason for this question:

1. It is confusing to use two modules with the same name. What do they represent that makes them distinct?

2. What task(s) can one solve that the other can&#39;t and vice-versa?

What is the difference between concurrent.futures and asyncio.futures?

I know that there is a [&quot;Microsoft Visual C++ Compiler for Python 2.7&quot;](http://www.microsoft.com/en-gb/download/details.aspx?id=44266) but is there, currently or planned, a Microsoft Visual C++ Compiler for Python 3.4 or eve Microsoft Visual C++ Compiler for Python 3.x for that matter?  It would be supremely beneficial if I didn&#39;t have to install a different version of visual studio on my entire lab.

Content Type	Original Author	Original Content on Stackoverflow
Question	spencermehta	View Question on Stackoverflow
Solution 1 - Python	valentin	View Answer on Stackoverflow

Python - a bytes like object is required, not str

Python Problem Overview

Python Solutions

Solution 1 - Python

No good example about RecyclerView and StaggeredGridLayoutManager in Android Docs

Derived account balance vs stored account balance for a simple bank account?

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