bool Imagick::haldClutImage ($clut, $channel)Parameters:this function takes two parameters as above and described below:
- $clut:this parameter is used to store the value of the Imagick object containing the Hald search image .
- $channel:This parameter provides a channel constant that is valid for channel mode. More than one channel can be combined using the bitwise operator. The default channel in the Imagick function is Imagick::CHANNEL_DEFAULT.
The following program illustrates the Imagick::haldClutImage()function in PHP:Program 1:
// require_once (’ path / vendor / autoload.php ’);
// Create new Imagick objects $imagick = new Imagick ( realpath ( ’img / engineerforengineer.png’ )); $imagickPalette = new Imagick ( realpath ( " img / engineerforengineer.png " ));
// Use sepiatoneImage and haldClutImage functions $imagickPalette -> sepiatoneImage (50); $imagick -> haldClutImage ( $imagickPalette );
// Image title header ( "Content-Type: image / jpg" );
// Display the output image echo $imagick -> getImageBlob(); ?> Output: Program 2:
// require_once (’ path / vendor / autoload.php ’);
// Create a new Imagick object $imagick = new Imagick ( ’img / engineerforengineer.png’ ); $imagickPalette = new Imagick ( "img / engineerforengineer.png" );
// Using the haldClutImage function $imagickPalette -> sepiatoneImage (150); $imagick -> haldClutImage ( $imagickPalette );
// Write an output image $imagick -> writeImage ( ’raiseImae1.png’ );
// Destroy Imagick $imagick -> destroy(); ?> Output: Link: http://php.net/manual/en/imagick.haldclutimage.php
PHP Imagick haldClutImage () function iat: Questions
InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately
3 answers
Tried to perform REST GET through python requests with the following code and I got error.
Code snip:
import requests
header = {"Authorization": "Bearer..."}
url = az_base_url + az_subscription_id + "/resourcegroups/Default-Networking/resources?" + az_api_version
r = requests.get(url, headers=header)
Error:
/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79:
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 https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
InsecurePlatformWarning
My python version is 2.7.3. I tried to install urllib3 and requests[security] as some other thread suggests, I still got the same error.
Wonder if anyone can provide some tips?
334
Answer #1
The docs give a fair indicator of what"s required., however requests allow us to skip a few steps:
You only need to install the security package extras (thanks @admdrew for pointing it out)
$ pip install requests[security]
or, install them directly:
$ pip install pyopenssl ndg-httpsclient pyasn1
Requests will then automatically inject pyopenssl into urllib3
If you"re on ubuntu, you may run into trouble installing pyopenssl, you"ll need these dependencies:
$ apt-get install libffi-dev libssl-dev
Dynamic instantiation from string name of a class in dynamically imported module?
3 answers
In python, I have to instantiate certain class, knowing its name in a string, but this class "lives" in a dynamically imported module. An example follows:
loader-class script:
import sys
class loader:
def __init__(self, module_name, class_name): # both args are strings
try:
__import__(module_name)
modul = sys.modules[module_name]
instance = modul.class_name() # obviously this doesn"t works, here is my main problem!
except ImportError:
# manage import error
some-dynamically-loaded-module script:
class myName:
# etc...
I use this arrangement to make any dynamically-loaded-module to be used by the loader-class following certain predefined behaviours in the dyn-loaded-modules...
222
Answer #1
You can use getattr
getattr(module, class_name)
to access the class. More complete code:
module = __import__(module_name)
class_ = getattr(module, class_name)
instance = class_()
As mentioned below, we may use importlib
import importlib
module = importlib.import_module(module_name)
class_ = getattr(module, class_name)
instance = class_()
How to get all of the immediate subdirectories in Python
3 answers
I"m trying to write a simple Python script that will copy a index.tpl to index.html in all of the subdirectories (with a few exceptions).
I"m getting bogged down by trying to get the list of subdirectories.
184
Answer #1
import os
def get_immediate_subdirectories(a_dir):
return [name for name in os.listdir(a_dir)
if os.path.isdir(os.path.join(a_dir, name))]
PHP Imagick haldClutImage () function PHP: Questions
