Python component in mule
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The document discusses using Python in Mule applications. It describes how Python allows interceptors to alter message properties and be used for tasks like logging. Python scripts can trigger database transactions or modify web interfaces. It then provides examples of Python features like accessing substrings, integer arithmetic, input/output, and using range functions. It concludes by demonstrating a simple Hello World Python script configured in a Mule flow.
![ Accessing Values in Strings
Python does not support a character
type; these are treated as strings of
length one, thus also considered a
substring.
To access substrings, use the square
brackets for slicing along with the index
or indices to obtain your substring. For
example −
#!/usr/bin/python var1 = 'Hello World!'
var2 = "Python Programming" print
"var1[0]: ", var1[0] print "var2[1:5]: ",](https://image.slidesharecdn.com/pythoncomponentinmule-160827034555/85/Python-component-in-mule-3-320.jpg)
![ ! python
# range function
print range(10)
print range(5, 10)
print range(0, 10, 3)
a = ['Mary', 'had', 'a', 'little', 'lamb']
for i in range(len(a)):
print i, a[i]](https://image.slidesharecdn.com/pythoncomponentinmule-160827034555/85/Python-component-in-mule-7-320.jpg)
Python component in mule
- 1. Python Component In Mule The Python language has many similarities to Perl, C, and Java. However, there are some definite differences between the languages
- 2. Python also allows the developer to configure interceptors and alter the values or references of particular properties in a script. Interceptors are configured to provide additional services to a message as it flows through a component. For example, a developer can configure an interceptor to execute scheduling or logging of a particular event while a message is being processed. The Python component also includes a custom interceptor which allows you to configure settings for Spring elements. The Python script is generally executed at runtime (client-side request); the custom logic embedded in the script can be used to trigger an application to execute a database transaction, or modify your web-page interface.
- 3. Accessing Values in Strings Python does not support a character type; these are treated as strings of length one, thus also considered a substring. To access substrings, use the square brackets for slicing along with the index or indices to obtain your substring. For example − #!/usr/bin/python var1 = 'Hello World!' var2 = "Python Programming" print "var1[0]: ", var1[0] print "var2[1:5]: ",
- 4. Here is a set of small scripts, which demonstrate some features of Python programming. # this is the first comment #! python # integer variables SPAM = 1 #! python print "Hello, Python" #! Python # string variable STRING = "# This is not a comment." print STRING
- 5. #! Python # integer arith a=4 print a b=12+5 print b c=b%a print c
- 6. #! python # input and operator if x = int(raw_input("Please enter an integer: ")) if x < 0: x = 0 print 'Negative changed to zero' elif x == 0: print 'Zero' elif x == 1: print 'Single' else: print 'More'
- 7. ! python # range function print range(10) print range(5, 10) print range(0, 10, 3) a = ['Mary', 'had', 'a', 'little', 'lamb'] for i in range(len(a)): print i, a[i]
- 8. Create a New Project
- 9. Enter project name as demo_python click on finish
- 10. Drag components as shown in the below and configure Http
- 11. Drag python component and configure as below
- 12. Paste in script #! python print "Hello, Python"
- 13. Run as Mule Application Hit the URL on browser: http://localhost:8081/python Hello, Python is the output