According to [this][1], you have to use the following:

    import urllib.request

The reason is:

&gt; With packages, like this, you sometimes need to explicitly import the 
piece you want. That way, the urllib module doesn&#39;t have to load 
everything up just because you wanted one small part.




  [1]: http://www.gossamer-threads.com/lists/python/python/1215580

Use this way

    import urllib.request
    urllib.request.urlopen(&#39;http://216.58.192.142&#39;,timeout=1)

In My case what i did was that i created a file &quot;http.py&quot; so changing that name to &quot;http_my.py&quot; solved that problem .same as @JohnnyFun

In python 3.6.x this worked for me, this way I did not have to change the code at all:

    import urllib.request as urllib



If nothing above worked for you, try renaming your python module.

In my particular case, the issue was that the file I was running was called `http.py`. Once I changed the name to `test-http.py`, importing urllib.request resolved the error `AttributeError: module &#39;urllib&#39; has no attribute &#39;request&#39;`

I had noticed that further up the exception trace the internal packages were trying to fetch a module called `http`, so guessing my module&#39;s name was wonkin stuff up...

I had the same issue. I&#39;m using Python 3.8.2. 

I checked the \__init__.py file located at /usr/lib/python3.8/urllib/ and its empty, which means you can not make a fully qualified access using only import urllib. In this case, you have to use import urllib.request.

Make sure your title does not have the same name as one of the python modules. i.e, if the name of your file is &quot;socket.py&quot; or &quot;https.py&quot;. You will encounter the Attribute Error.
Good Luck

    import urllib.request as urllib

then in the code call urlopen function

example:

    test = urllib.urlopen(&quot;----&quot;)



If I forwarded a port using 

    kubectl port-forward mypod 9000:9000

How can I undo that so that I can bind port 9000 with another program?  
Additionally, how can I test to see what ports are forwarded?



how to undo a kubectl port-forward

I am using recaptcha with my laravel application.

I just want to check recaptcha&#39;s response on form submit using jquery and stop user by alert that pleade validate captcha.

but , I could not stop form submission even if captcha is not filled. 

here is my code.

     $(&#39;#payuForm&#39;).on(&#39;submit&#39;, function (e) {
    
                        var response = grecaptcha.getResponse();
    
                        if(response.length == 0 ||  response == &#39;&#39; || response ===false ) {
                            alert(&#39;Please validate captcha.&#39;);
                            e.preventDefault();
                        }
                    });

 

    &lt;div class=&quot;captcha&quot;&gt;
     {{ View::make(&#39;recaptcha::display&#39;) }}
    &lt;/div&gt;

I am getting this error in browser console , and form gets submit. 

    Error: ReCAPTCHA placeholder element must be empty

Error: ReCAPTCHA placeholder element must be empty

I have tried 

    import urllib.request
or 

    import urllib

The path for my urllib is 
`/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/urllib/__init__.py`

I am wondering where is urlopen, or is my python module pointing to the wrong file?

Python 3.5.1 urllib has no attribute request

I have tried
<pre><code class="hljs language-arduino">import urllib.request
</code></pre>
or
<pre><code class="hljs language-arduino">import urllib
</code></pre>
The path for my urllib is
<code>/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/urllib/__init__.py</code>
I am wondering where is urlopen, or is my python module pointing to the wrong file?

I need to 
be able to assign a UUID to a user and document this in a .txt file. This is all I have:

```python
import uuid

a = input(&quot;What&#39;s your name?&quot;)
print(uuid.uuid1())
f.open(#file.txt)
```

I tried:

```python
f.write(uuid.uuid1())
```

but nothing comes up, may be a logical error but I don&#39;t know.


How do I convert a Python UUID into a string?

I was looking at the source of [sorted_containers][1] and was surprised to see [this line](https://github.com/grantjenks/sorted_containers/blob/master/sortedcontainers/sortedlist.py#L72):

    self._load, self._twice, self._half = load, load * 2, load &gt;&gt; 1

Here `load` is an integer. Why use bit shift in one place, and multiplication in another? It seems reasonable that bit shifting may be faster than integral division by 2, but why not replace the multiplication by a shift as well? I benchmarked the the following cases:

 1. (times, divide)
 1. (shift, shift)
 1. (times, shift)
 1. (shift, divide)

and found that #3 is consistently faster than other alternatives:

    # self._load, self._twice, self._half = load, load * 2, load &gt;&gt; 1
    
    import random
    import timeit
    import pandas as pd
    
    x = random.randint(10 ** 3, 10 ** 6)
    
    def test_naive():
        a, b, c = x, 2 * x, x // 2
        
    def test_shift():
        a, b, c = x, x &lt;&lt; 1, x &gt;&gt; 1    
    
    def test_mixed():
        a, b, c = x, x * 2, x &gt;&gt; 1    
    
    def test_mixed_swapped():
        a, b, c = x, x &lt;&lt; 1, x // 2
        
    def observe(k):
        print(k)
        return {
            &#39;naive&#39;: timeit.timeit(test_naive),
            &#39;shift&#39;: timeit.timeit(test_shift),
            &#39;mixed&#39;: timeit.timeit(test_mixed),
            &#39;mixed_swapped&#39;: timeit.timeit(test_mixed_swapped),
        }
        
    def get_observations():
        return pd.DataFrame([observe(k) for k in range(100)])

[![enter image description here][2]][2]
[![enter image description here][3]][3]

The question:

Is my test valid? If so, why is (multiply, shift) faster than (shift, shift)?

I run Python 3.5 on Ubuntu 14.04.

**Edit**

Above is the original statement of the question. Dan Getz provides an excellent explanation in his answer.

For the sake of completeness, here are sample illustrations for larger `x` when multiplication optimizations do not apply.

[![enter image description here][4]][4]
[![enter image description here][5]][5]


  [1]: https://github.com/grantjenks/sorted_containers/blob/master/sortedcontainers/sortedlist.py
  [2]: http://i.stack.imgur.com/mrSuI.png
  [3]: http://i.stack.imgur.com/Yo4wL.png
  [4]: http://i.stack.imgur.com/2btSH.png
  [5]: http://i.stack.imgur.com/ItTVG.png

Times-two faster than bit-shift, for Python 3.x integers?

I have a snippet of code using the pygoogle python module that allows me to programmatically search for some term in google succintly:

     g = pygoogle(search_term)
     g.pages = 1
     results = g.get_urls()[0:10]

I just found out that this has been discontinued unfortunately and replaced by something called the google custom search. I looked at the other related questions on SO but didn&#39;t find anything I could use. I have two questions:
           
1) Does google custom search allow me to do exactly what I am doing in the three lines above?

2) If yes - where can I find example code to do exactly what I am doing above? If no then what is the alternative to do what I did using pygoogle?

 

Programmatically searching google in Python using custom search

I define a tensor like this:

 `x = tf.get_variable(&quot;x&quot;, [100])`

But when I try to print shape of tensor :

`print( tf.shape(x) )`

I get **Tensor(&quot;Shape:0&quot;, shape=(1,), dtype=int32)**, why the result of output should not be shape=(100)

tf.shape() get wrong shape in tensorflow

I am practicing using type hints in Python 3.5. One of my colleague uses `typing.Dict`:

    import typing
    
    
    def change_bandwidths(new_bandwidths: typing.Dict,
                          user_id: int,
                          user_name: str) -&gt; bool:
        print(new_bandwidths, user_id, user_name)
        return False
    
    
    def my_change_bandwidths(new_bandwidths: dict,
                             user_id: int,
                             user_name: str) -&gt;bool:
        print(new_bandwidths, user_id, user_name)
        return True
    
    
    def main():
        my_id, my_name = 23, &quot;Tiras&quot;
        simple_dict = {&quot;Hello&quot;: &quot;Moon&quot;}
        change_bandwidths(simple_dict, my_id, my_name)
        new_dict = {&quot;new&quot;: &quot;energy source&quot;}
        my_change_bandwidths(new_dict, my_id, my_name)
    
    if __name__ == &quot;__main__&quot;:
        main()

Both of them work just fine, there doesn&#39;t appear to be a difference. 

I have read the [`typing` module documentation](https://docs.python.org/3/library/typing.html).

Between `typing.Dict` or `dict` which one should I use in the program?


Difference between defining typing.Dict and dict?

I am using Python 3.5.1. I read the document and the package section here: https://docs.python.org/3/tutorial/modules.html#packages

Now, I have the following structure:

    /home/wujek/Playground/a/b/module.py

`module.py`:

    class Foo:
        def __init__(self):
            print(&#39;initializing Foo&#39;)

Now, while in `/home/wujek/Playground`:

    ~/Playground $ python3
    &gt;&gt;&gt; import a.b.module
    &gt;&gt;&gt; a.b.module.Foo()
    initializing Foo
    &lt;a.b.module.Foo object at 0x100a8f0b8&gt;

Similarly, now in home, superfolder of `Playground`:

    ~ $ PYTHONPATH=Playground python3
    &gt;&gt;&gt; import a.b.module
    &gt;&gt;&gt; a.b.module.Foo()
    initializing Foo
    &lt;a.b.module.Foo object at 0x10a5fee10&gt;

Actually, I can do all kinds of stuff:

    ~ $ PYTHONPATH=Playground python3
    &gt;&gt;&gt; import a
    &gt;&gt;&gt; import a.b
    &gt;&gt;&gt; import Playground.a.b

Why does this work? I though there needed to be `__init__.py` files (empty ones would work) in both `a` and `b` for `module.py` to be importable when the Python path points to the `Playground` folder?

This seems to have changed from Python 2.7:

    ~ $ PYTHONPATH=Playground python
    &gt;&gt;&gt; import a
    ImportError: No module named a
    &gt;&gt;&gt; import a.b
    ImportError: No module named a.b
    &gt;&gt;&gt; import a.b.module
    ImportError: No module named a.b.module

With `__init__.py` in both `~/Playground/a` and `~/Playground/a/b` it works fine.

Is __init__.py not required for packages in Python 3.3+

The following seems to work either way. What is the advantage (other than the nice `repr`) of using `types.SimpleNamespace`? Or is it the same thing?

    &gt;&gt;&gt; import types
    &gt;&gt;&gt; class Cls():
    ...     pass
    ... 
    &gt;&gt;&gt; foo = types.SimpleNamespace() # or foo = Cls()
    &gt;&gt;&gt; foo.bar = 42
    &gt;&gt;&gt; foo.bar
    42
    &gt;&gt;&gt; del foo.bar
    &gt;&gt;&gt; foo.bar
    AttributeError: &#39;types.SimpleNamespace&#39; object has no attribute &#39;bar&#39;

What is the difference between SimpleNamespace and empty class definition?

I installed python 3.5.1 via ampps and it&#39;s working. However, when i try to use pip, i get the following message:

    Fatal error in launcher: Unable to create process using &#39;&quot;&#39;

I already reinstalled ampps into a path which doesn&#39;t include any whitespaces. Note that the &quot;python -m pip&quot; workaround doesn&#39;t work for me too, since i get the following message everytime i use it:

    C:\Users\MyUserName\Desktop\Ampps\python\python.exe: Error while finding spec for &#39;pip.__main__&#39; (&lt;class &#39;ImportError&#39;&gt;: No module named &#39;queue&#39;); &#39;pip&#39; is a package and cannot be directly executed

How do i get pip to work properly? I hope, there is a way to use the pip command itself without the preceding python command.

EDIT: This is what happens, if i try to run `python -c &quot;import pip.__main__&quot;`:

    Traceback (most recent call last):
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\site-packages\pip\compat\__init__.py&quot;, line 11, in &lt;module&gt;
        from logging.config import dictConfig as logging_dictConfig
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\logging\config.py&quot;, line 30, in &lt;module&gt;
        import logging.handlers
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\logging\handlers.py&quot;, line 28, in &lt;module&gt;
        import queue
    ImportError: No module named &#39;queue&#39;
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File &quot;&lt;string&gt;&quot;, line 1, in &lt;module&gt;
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\site-packages\pip\__init__.py&quot;, line 13, in &lt;module&gt;
        from pip.utils import get_installed_distributions, get_prog
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\site-packages\pip\utils\__init__.py&quot;, line 18, in &lt;module&gt;
        from pip.compat import console_to_str, stdlib_pkgs
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\site-packages\pip\compat\__init__.py&quot;, line 13, in &lt;module&gt;
        from pip.compat.dictconfig import dictConfig as logging_dictConfig
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\site-packages\pip\compat\dictconfig.py&quot;, line 22, in &lt;module&gt;
        import logging.handlers
      File &quot;C:\Users\MyUserName\Desktop\Ampps\python\lib\logging\handlers.py&quot;, line 28, in &lt;module&gt;
        import queue
    ImportError: No module named &#39;queue&#39;



Pip - Fatal error in launcher: Unable to create process using &#39;&quot;&#39;

python 3.5.2

**code 1**

    import urllib
    s = urllib.parse.quote(&#39;&quot;&#39;)
    print(s) 

it gave this error: 

&gt; AttributeError: module &#39;urllib&#39; has no attribute &#39;parse&#39;

**code 2**

    from urllib.parse import quote  
    # import urllib
    # s = urllib.parse.quote(&#39;&quot;&#39;)
    s = quote(&#39;&quot;&#39;)
    print(s) 

it works...

**code3**

    from flask import Flask
    # from urllib.parse import quote  
    # s = quote(&#39;&quot;&#39;)
    import urllib
    s = urllib.parse.quote(&#39;&quot;&#39;)
    print(s) 
 it works,too. because of flask? 

Why I don&#39;t have the error anymore? is it a bug ?





Content Type	Original Author	Original Content on Stackoverflow
Question	user1999806	View Question on Stackoverflow
Solution 1 - Python	Swordsman	View Answer on Stackoverflow
Solution 2 - Python	Kashif	View Answer on Stackoverflow
Solution 3 - Python	Arsalan Zabeeb	View Answer on Stackoverflow
Solution 4 - Python	MPękalski	View Answer on Stackoverflow
Solution 5 - Python	JohnnyFun	View Answer on Stackoverflow
Solution 6 - Python	Lucas Zampar	View Answer on Stackoverflow
Solution 7 - Python	Franck David Gnonka	View Answer on Stackoverflow
Solution 8 - Python	Hassan Saeed	View Answer on Stackoverflow

Python 3.5.1 urllib has no attribute request

Python Problem Overview

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Solution 1 - Python

Solution 2 - Python

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Solution 8 - Python

Error: ReCAPTCHA placeholder element must be empty

how to undo a kubectl port-forward

Attributions