问程序设计-如何改进它和如何避免耦合(Python)？

EN

class Helpers(object):
    def __init__(self, fp=None):
        self.contents = self.func1(self.fp)
        self.func2_results = self.func2()
        self.func3_results = self.func3()
        self.func4_results = self.func4()
        self.results = {'name2':self.func2_results,
                        'name3':self.func3_results,
                        'name4':self.func4_results
                       }

    def func1(self):
        # read file
        with open(...) as f:
            contents = f.read()
        return contents

    def func2(self):
        # doStuff(self.contents)
        return something

    def func3(self):
        # doStuff(self.contents)
        return something

    def func4(self):
        # func2 and func3 were already run once in init
        # so lets use the results from them
        # self.func2_results
        # self.func2_results
        # self.func3_results
        return something       

from module2 import Helpers

class Main(object):
    def __init__(self, fp=None):
        self.helper = Helpers(self.fp)
        self.contents = self.helper.contents
        self.name2 = self.helper.results['name2']
        self.name3 = self.helper.results['name3']
        self.name4 = self.helper.results['name4']
    def f1(self):
        # doStuff(self.contents)
        # doStuff(self.name2)
        return thing1
    def f2(self):
        # doStuff(self.contents)
        # doStuff(self.name2)
        return thing2
    def f3(self):
        # doStuff(self.helper.contents)
        return thing3
    def f4(self):
        # doStuff(self.name2)
        # doStuff(self.name3)
        # doStuff(self.name4)
        return thing4
    def f5(self):
        # doStuff(self.contents)
        # doStuff(self.name2)
        # doStuff(self.name4)
        return thing5
    def f6(self):
        # doStuff(self.contents)
        # doStuff(self.name2)
        # doStuff(self.name4)
        return thing6

from module1 import Main

here = Main(fp="/some/file.xml")
here2 = Main(fp="/some/file2.xml")
print(here.name2)
print(here.name3)
print(here.name4)
# each method will have only run once 
f1 = here.f1()
f2 = here.f2()
f3 = here.f3()
f4 = here.f4()
f5 = here.f5()
f6 = here.f6()
# these will run the helpers again from within `Helpers()`
# say for example if the file contents have been updated
h1 = here.helper.func1()
h2 = here.helper.func2()
h3 = here.helper.func3()
h4 = here.helper.func4()