execute methods stored in a list

Question

[linked to] - Store functions in list and call them later

class TestSuites(unittest.TestCase):

def firstHagerTest(self):
    argumentsList = [] 
    for i in sys.argv: 
        argumentsList.append(i) 
    argumentsList.pop(0)
    HagercadLogger.Logger.Log(HagercadLogger.LEVEL_WARNING, "PRINT MY ARGS LIST: " + ', '.join(argumentsList))     
    try:
        func_to_run = globals()[argumentsList] #i have to find a way to make this line work as the line 27 somehow, and of course no matter the no. of elements
        #func_to_run2 = globals()[HagercadUtilities.Utilities.startApp(), HagercadSteps.Steps.createNewProject()] #this work ok 
    except KeyError:
       pass

If i run the script with the hardcoded elements like in func_to_run2 it works as expected. But when I execute it with func_to_run where i pass my list I get the following error:

TypeError: unhashable type: 'list'

argumentsList may contain 5 or 9 elements for example, here it exemplified with 2 so it could be arugmenstList = [startApp(),createProject(),deleteProject(),switchSettings() etc] so no matter how long the list of steps is I want to be able to run them. The arguments are coming from cmd.

What could be the solution for this? Couldn't find anything suitable for me so far.

You have the methods as strings in the list, so you're trying to call the strings, and not the methods that they represent — Shinra tensei, Jan 16 '19 at 09:54
You should edit your last question instead of asking a new one https://stackoverflow.com/questions/54201197/generate-steps-method-from-given-list — BlueSheepToken, Jan 16 '19 at 10:02

score 1 · Answer 1 · answered Jan 17 '19 at 10:04

So I found a solution for this.

    argumentsList = [] 
    for i in sys.argv: 
        argumentsList.append(i)   
    newStrList = [x.encode('UTF8') for x in argumentsList]
    try:
        for indx, val in enumerate(newStrList):
            print(indx, val)
            getattr(ClassContainingMethods,newStrList[indx])()
    except KeyError:
       pass

Now, no matter how many arguments(method calls in this case) are recived in the list they are executed.

score 0 · Answer 2 · answered Jan 16 '19 at 09:54

0

Look at the following code, I think it can help you:

import importlib

name = 'MyFile.MyClass.startApp'
parts = name.split('.')
module_name, method_name = '.'.join(parts[:-1]), parts[-1]
module = importlib.import_module(module_name)

the you can call getattr(module, method_name)()

answered Jan 16 '19 at 09:54

Mehrdad Pedramfar

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I got 'ImportError: No module named Utilities' if i use name = 'HagercadUtilities.Utilities.startApp' wich is correct as path – CristianGrassu Jan 16 '19 at 12:10

execute methods stored in a list

2 Answers2