Try [CopyFrom](https://googleapis.dev/python/protobuf/3.11.2/google/protobuf/message.html#google.protobuf.message.Message.CopyFrom):

    ptask.task.CopyFrom(task)

I don&#39;t know *protocol-buffers* but I took a look at [the docs][1] and it says:

&gt; You cannot assign a value to an embedded message field. Instead,
&gt; assigning a value to any field within the child message implies
&gt; setting the message field in the parent.

So I&#39;m assuming this should work:
    
    task = yacc.task()
    task.id = 1000
    task.msg = u&quot;test&quot;
    ptask = yacc.task_info() 
    ptask.task.id = task.id
    ptask.task.msg = task.msg


  [1]: https://developers.google.com/protocol-buffers/docs/reference/python-generated

I&#39;m new to protocol-buffers too and faced with the same problem. I&#39;ve found [this method](https://developers.google.com/protocol-buffers/docs/reference/python/google.protobuf.message.Message-class#MergeFrom) helpful.

I think it should work:

    task = yacc.task()
    task.id = 1000
    task.msg = u&quot;test&quot;
    ptask = yacc.task_info() 
    ptask.task.MergeFrom(task)

I&#39;m trying to get google maps responsive and resize while keeping its center when windows resizes. I read other stack questions in regards such as:

[Responsive Google Map?][1] and [Center Google Maps (V3) on browser resize (responsive)][2]

from the second stack question [I got a link which helps me with part of the code][3] but I still have no luck. This is the code I am using, when I resize the window, the maps doesn&#39;t resize at all

        function initialize() {
          var mapOptions = {
           center: new google.maps.LatLng(40.5472,12.282715),
           zoom: 6,
           mapTypeId: google.maps.MapTypeId.ROADMAP
          };
          var map = new google.maps.Map(document.getElementById(&quot;map-canvas&quot;),
                    mapOptions);
        }
        google.maps.event.addDomListener(window, &#39;load&#39;, initialize);
	    google.maps.event.addDomListener(window, &quot;resize&quot;, function() {
         var center = map.getCenter();
         google.maps.event.trigger(map, &quot;resize&quot;);
         map.setCenter(center); 
        });

html

     &lt;div id=&quot;map-canvas&quot;/&gt;

css

    html { height: 100% }
    body { height: 100%; margin: 0; padding: 0; }
    #map-canvas { height: 100%; }


  [1]: https://stackoverflow.com/questions/15421369/responsive-google-map
  [2]: https://stackoverflow.com/questions/8792676/center-google-maps-v3-on-browser-resize-responsive
  [3]: http://hsmoore.com/keep-google-map-v3-centered-when-browser-is-resized/

Google maps responsive resize

In Xamarin Android - How to regenerate the Resource.designer.cs

I tried to mark all the XML file&#39;s Build Action as &quot;AndroidResource&quot; and still the Resource.designer.cs won&#39;t get updated with new values.

What event trigger generating this file?

Xamarin Android - How to rebuild Resource.designer.cs

I&#39;m using protocol-buffers python lib to send data,but it&#39;s have some problems, so

    Traceback (most recent call last):
      File &quot;test_message.py&quot;, line 17, in &lt;module&gt;
        ptask.task = task
      File &quot;build\bdist.win32\egg\google\protobuf\internal\python_message.py&quot;, line
    513, in setter
    AttributeError: Assignment not allowed to composite field &quot;_task&quot; in protocol message object.

the src as follows:

proto file:

    message task {
        required int32 id = 1;
        required string msg = 2;
    }

    message task_info {
        required task task = 1;
    }

python code:

    task = yacc.task()
    task.id = 1000
    task.msg = u&quot;test&quot;
    ptask = yacc.task_info() 
    ptask.task = task # this line happen the runtime error 

AttributeError: Assignment not allowed to composite field &quot;task&quot; in protocol message object

I'm using protocol-buffers python lib to send data,but it's have some problems, so
<pre><code class="hljs language-arduino">Traceback (most recent call last):
 File "test_message.py", line 17, in &#x3C;module>
 ptask.task = task
 File "build\bdist.win32\egg\google\protobuf\internal\python_message.py", line
513, in setter
AttributeError: Assignment not allowed to composite field "_task" in protocol message object.
</code></pre>
the src as follows:
proto file:
<pre><code class="hljs language-ini">message task {
 required int32 id = 1;
 required string msg = 2;
}

message task_info {
 required task task = 1;
}
</code></pre>
python code:
<pre><code class="hljs language-ini">task = yacc.task()
task.id = 1000
task.msg = u"test"
ptask = yacc.task_info() 
ptask.task = task # this line happen the runtime error 
</code></pre>

I&#39;ve already read [this thread][1] but when I implement it into my code it only works for a few iterations. 

I&#39;m using python to iterate through a directory (lets call it move directory) to copy mainly pdf files (matching a unique ID) to another directory (base directory) to the matching folder (with the corresponding unique ID). I started using `shutil.copy` but if there are duplicates it overwrites the existing file. 

I&#39;d like to be able to search the corresponding folder to see if the file already exists, and iteratively name it if more than one occurs. 

e.g.

 - copy file 1234.pdf to folder in base directory 1234.
 - if 1234.pdf exists to name it 1234_1.pdf,
 - if another pdf is copied as 1234.pdf then it would be 1234_2.pdf.

Here is my code:

    import arcpy
    import os
    import re
    import sys
    import traceback
    import collections
    import shutil

    movdir = r&quot;C:\Scans&quot;
    basedir = r&quot;C:\Links&quot;

    try:
        #Walk through all files in the directory that contains the files to copy
        for root, dirs, files in os.walk(movdir):
            for filename in files:
                #find the name location and name of files
                path = os.path.join(root, filename)
                print path
                #file name and extension
                ARN, extension = os.path.splitext(filename)
                print ARN

                #Location of the corresponding folder in the new directory
                link = os.path.join(basedir,ARN)

                # if the folder already exists in new directory
                if os.path.exists(link):

                    #this is the file location in the new directory
                    file = os.path.join(basedir, ARN, ARN)
                    linkfn = os.path.join(basedir, ARN, filename)

                    if os.path.exists(linkfn):
                        i = 0
                        #if this file already exists in the folder
                        print &quot;Path exists already&quot;
                        while os.path.exists(file + &quot;_&quot; + str(i) + extension):
                            i+=1
                        print &quot;Already 2x exists...&quot;
                        print &quot;Renaming&quot;
                        shutil.copy(path, file + &quot;_&quot; + str(i) + extension)
                    else:

                        shutil.copy(path, link)
                        print ARN + &quot; &quot; +  &quot;Copied&quot;
                else:
                    print ARN + &quot; &quot; + &quot;Not Found&quot;

  [1]: https://stackoverflow.com/questions/10036489/copy-a-file-to-a-new-location-and-increment-filename-python

Python copy files to a new directory and rename if file name already exists

I am working on a script to recursively go through subfolders in a mainfolder and build a list off a certain file type. I am having an issue with the script. It&#39;s currently set as follows:


    for root, subFolder, files in os.walk(PATH):
        for item in files:
            if item.endswith(&quot;.txt&quot;) :
                fileNamePath = str(os.path.join(root,subFolder,item))

the problem is that the `subFolder` variable is pulling in a list of subfolders rather than the folder that the ITEM file is located. I was thinking of running a for loop for the subfolder before and join the first part of the path but I figured I&#39;d double check to see if anyone has any suggestions before that.

How to do a recursive sub-folder search and return files in a list?

We initialize a numpy array with zeros as bellow:

    np.zeros((N,N+1))

But how do we check whether all elements in a given n*n numpy array matrix is zero.  
The method just need to return a True if all the values are indeed zero.


Test if numpy array contains only zeros

I&#39;m doing a python script that writes some data to a mongodb.
I need to close the connection and free some resources, when finishing.

How is that done in Python?

How to close a mongodb python connection?

I have a homogeneous list of objects with None, but it can contain any type of values. 
Example:

    &gt;&gt;&gt; l = [1, 3, 2, 5, 4, None, 7]
    &gt;&gt;&gt; sorted(l)
    [None, 1, 2, 3, 4, 5, 7]
    &gt;&gt;&gt; sorted(l, reverse=True)
    [7, 5, 4, 3, 2, 1, None]

Is there a way without reinventing the wheel to get the list sorted the usual python way, but with None values at the end of the list, like that:

    [1, 2, 3, 4, 5, 7, None]

I feel like here can be some trick with &quot;key&quot; parameter

Sort list while pushing None values to the end

Google Protocol Buffers can not only be serialized in binary format, also be [serialized as text](https://developers.google.com/protocol-buffers/docs/reference/cpp/google.protobuf.text_format), known as textproto. However I can&#39;t easily find examples of such text; what would it look like?

Expected answer: an example covering all features allowed by the protobuf IDL/proto file including a sample protobuf packet in textual form.

What does the protobuf text format look like?

I have an object that I de-serialize using `protobuf` in Python. When I print the object it looks like a python object, however when I try to convert it to `json` I have all sorts of problems.

For example, if I use `json.dumps()` I get that the object (the generated code from protoc) does not contain a _ _dict_ _ error.

If I use jsonpickle I get `UnicodeDecodeError: &#39;utf8&#39; codec can&#39;t decode byte 0x9d in position 97: invalid start byte`. 


Test code below is using `jsonpickle` with the error shown above. 

    if len(sys.argv) &lt; 2:
        print (&quot;Error: missing ser file&quot;)
        sys.exit()
    else :
        fileLocation = sys.argv[1]
        
    org = BuildOrgObject(fileLocation) 

    org = org.Deserialize()
    
           
    #print (org)
    jsonObj = jsonpickle.encode(org)
    print (jsonObj)

Protobuf to json in python

I tried importing a proto file named test1.proto to another proto file named test2.proto using the import statement

    import &quot;com/test/test1.proto&quot;;

But i get the following error 

    com/test/test1.proto: File not found.
    test2.proto: Import &quot;com/test/test1.proto&quot; was not found or had errors.

I tried in many ways to find the cause of the import error but couldn&#39;t. So could someone please tell me the correct way of doing proto file imports in case there is something wrong with the above statement??

Error using import in .proto file

I am working on something which fetches data from database and constructs protobuff message. Given the possibility that null values can be fetched from the database for certain fields , I will get Null-pointer exception while trying to construct the protobuff message. Getting to know that null is not supported in protobuffs from the thread http://code.google.com/p/protobuf/issues/detail?id=57, I am wondering whether the only other way to handle NPE getting thrown is to insert manual checks into the java file corresponding to the proto like below!

    message ProtoPerson{
        optional string firstName = 1;
        optional string lastName = 2;
        optional string address1 = 3;
    }

    ProtoPerson.Builder builder = ProtoPerson.Builder.newBuilder();
    if (p.getFirstName() != null) builder.setFirstName(p.getFirstName());
    if (p.getLastName() != null) builder.setLastName(p.getLastName());
    if (p.getAddress1() != null) builder.setAddress1(p.getAddress1());
    ...

So can someone please clarify whether there is any other possible efficient way to handle the null values during protobuff construction??

Handling null values in protobuffers

I would like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on Mac using the command line/Terminal app.

I tried with `brew install protobuf`, but the latest version 2.5.0 has been installed.

Is it possible to install the older version from the terminal?

Content Type	Original Author	Original Content on Stackoverflow
Question	gezhonglunta	View Question on Stackoverflow
Solution 1 - Python	John McFarlane	View Answer on Stackoverflow
Solution 2 - Python	Martin Maillard	View Answer on Stackoverflow
Solution 3 - Python	Aleksandro M Granda	View Answer on Stackoverflow

AttributeError: Assignment not allowed to composite field "task" in protocol message object

Python Problem Overview

Python Solutions

Solution 1 - Python

Solution 2 - Python

Solution 3 - Python

Xamarin Android - How to rebuild Resource.designer.cs

Google maps responsive resize

Attributions