Importing

[HMS Surprise]

Greetings,

First I will admit I am new to Python but have experience with C++ and
some Tcl/Tk. I am starting to use a tool called MaxQ that uses
jython. I have been studying Rossum's tutorial but still am unclear on
importing, the use of self, and calling functions with their own name
in quotes. In the code below the lines between #Start and #End are
generated by browsing web pages. In a large test this section can
become quite large. The maxQ documentation suggests breaking it up
into functions. If so could these functions be placed in a separate
file and imported? Is it acceptable to import into a class? If
imported as a function will self as used here need to be changed?
Would it be better to duplicate class and import whole classes?

Any suggestions will be appreciated, especially other Python
tutorials.

Best Regards,

jh

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# Generated by MaxQ
[com.bitmechanic.maxq.generator.JythonCodeGenerator]
from PyHttpTestCase import PyHttpTestCase
from com.bitmechanic.maxq import Config
global validatorPkg
if __name__ == 'main':
validatorPkg = Config.getValidatorPkgName()
# Determine the validator for this testcase.
exec 'from '+validatorPkg+' import Validator'


# definition of test class
class MaxQTest(PyHttpTestCase):
def runTest(self):
self.msg('Test started')

#Start

self.msg("Testing URL: %s" % self.replaceURL('''http://
www.dogpile.com/'''))
url = "http://www.dogpile.com/"
params = None
Validator.validateRequest(self, self.getMethod(), "get", url,
params)
self.get(url, params)
self.msg("Testing URL: %s" % self.replaceURL('''http://
www.dogpile.com/favicon.ico'''))
url = "http://www.dogpile.com/favicon.ico"
params = None
Validator.validateRequest(self, self.getMethod(), "get", url,
params)
self.get(url, params)

#End

# ^^^ Insert new recordings here. (Do not remove this line.)


# Code to load and run the test
if __name__ == 'main':
test = MaxQTest("MaxQTest")


# test.Run() #Either of these two lines work equally well.
test.runTest() #I suspect that Run() is a method of
PPyHttpTestCase or a builtIn

 

[Bruno Desthuilliers]

HMS Surprise a écrit :

Greetings,

First I will admit I am new to Python but have experience with C++ and
some Tcl/Tk. I am starting to use a tool called MaxQ that uses
jython. I have been studying Rossum's tutorial but still am unclear on
importing,

What's your problem here ?

the use of self,

In Python, a method is a wrapper around a function. This wrappers as a
reference to the instance on which the method is called, and calls the
wrapped function passing the instance as first argument. By convention,
it's named 'self', but technically you could use any other name. So, to
make a long story short:
- you need to declare 'self' as the first argument of a method
- you need to use self to access the current instance within the
method body
- you *don't* have to pass the instance when calling the method

and calling functions with their own name

You mean the
test = MaxQTest("MaxQTest")
line ?

First point: it's not a function call, it's an object instanciation.
There's no 'new' keyword in Python, classes are callable objects acting
as factory for their instances.

Second point: passing the name of the class here is specific to MaxQ,
and I'd say it's only used for internal and display stuff.

in quotes. In the code below the lines between #Start and #End are
generated by browsing web pages. In a large test this section can
become quite large. The maxQ documentation suggests breaking it up
into functions. If so could these functions be placed in a separate
file and imported?

Yes, but you'd have to bind them to the class manually (cf below).

Is it acceptable to import into a class?

Yes, but this wont solve your problem. Import creates a module object in
the current namespace, that's all.

If
imported as a function will self as used here need to be changed?

Nope.

def quux(self, foo):
self.bar += foo

class Boo(object):
def __init__(self, bar):
self.bar = bar

Boo.quux = quux
b = Boo(40)
b.quux(2)
print b.bar

 

[HMS Surprise]

Thanks for posting. I continued to read and realized the instantiation
was not a function call soon after I posted. Oh well...

Still unsure about the best way to break up the large #start - #end
section. I appreciate your answers and try to digest them more fully.
Then maybe I will have a better idea and can post better qualified/
quantified questions.

Thanks again,

jh