__init__ 내부에서 클래스 함수 호출

__init__ 내부에서 클래스 함수 호출

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파일 이름을 취하고 파일을 열고 일부 데이터를 구문 분석하는 코드를 작성 중입니다. 수업 시간에하고 싶습니다. 다음 코드가 작동합니다.

class MyClass():
    def __init__(self, filename):
        self.filename = filename 

        self.stat1 = None
        self.stat2 = None
        self.stat3 = None
        self.stat4 = None
        self.stat5 = None

        def parse_file():
            #do some parsing
            self.stat1 = result_from_parse1
            self.stat2 = result_from_parse2
            self.stat3 = result_from_parse3
            self.stat4 = result_from_parse4
            self.stat5 = result_from_parse5

        parse_file()

그러나 그것은 모든 파싱 기계 __init__를 내 클래스 의 함수 범위에 넣는 것과 관련이 있습니다. 이 단순화 된 코드에서는 이제 괜찮아 보이지만 함수 parse_file에는 몇 가지 수준의 들여 쓰기도 있습니다. 함수 parse_file()를 아래와 같은 클래스 함수로 정의하고 싶습니다.

class MyClass():
    def __init__(self, filename):
        self.filename = filename 

        self.stat1 = None
        self.stat2 = None
        self.stat3 = None
        self.stat4 = None
        self.stat5 = None
        parse_file()

    def parse_file():
        #do some parsing
        self.stat1 = result_from_parse1
        self.stat2 = result_from_parse2
        self.stat3 = result_from_parse3
        self.stat4 = result_from_parse4
        self.stat5 = result_from_parse5

물론이 코드는 함수 parse_file()가 함수 의 범위 내에 있지 않기 때문에 작동하지 않습니다 __init__. __init__해당 클래스 내에서 클래스 함수를 호출하는 방법이 있습니까? 아니면 잘못된 방식으로 생각하고 있습니까?

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다음과 같이 함수를 호출하십시오.

self.parse_file()

You also need to define your parse_file() function like this:

def parse_file(self):

The parse_file method has to be bound to an object upon calling it (because it's not a static method). This is done by calling the function on an instance of the object, in your case the instance is self.

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If I'm not wrong, both functions are part of your class, you should use it like this:

class MyClass():
    def __init__(self, filename):
        self.filename = filename 

        self.stat1 = None
        self.stat2 = None
        self.stat3 = None
        self.stat4 = None
        self.stat5 = None
        self.parse_file()

    def parse_file(self):
        #do some parsing
        self.stat1 = result_from_parse1
        self.stat2 = result_from_parse2
        self.stat3 = result_from_parse3
        self.stat4 = result_from_parse4
        self.stat5 = result_from_parse5

replace your line:

parse_file() 

with:

self.parse_file()

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How about:

class MyClass(object):
    def __init__(self, filename):
        self.filename = filename 
        self.stats = parse_file(filename)

def parse_file(filename):
    #do some parsing
    return results_from_parse

By the way, if you have variables named stat1, stat2, etc., the situation is begging for a tuple: stats = (...).

So let parse_file return a tuple, and store the tuple in self.stats.

Then, for example, you can access what used to be called stat3 with self.stats[2].

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In parse_file, take the self argument (just like in __init__). If there's any other context you need then just pass it as additional arguments as usual.

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You must declare parse_file like this; def parse_file(self). The "self" parameter is a hidden parameter in most languages, but not in python. You must add it to the definition of all that methods that belong to a class. Then you can call the function from any method inside the class using self.parse_file

your final program is going to look like this:

class MyClass():
  def __init__(self, filename):
      self.filename = filename 

      self.stat1 = None
      self.stat2 = None
      self.stat3 = None
      self.stat4 = None
      self.stat5 = None
      self.parse_file()

  def parse_file(self):
      #do some parsing
      self.stat1 = result_from_parse1
      self.stat2 = result_from_parse2
      self.stat3 = result_from_parse3
      self.stat4 = result_from_parse4
      self.stat5 = result_from_parse5

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I think that your problem is actually with not correctly indenting init function.It should be like this

class MyClass():
     def __init__(self, filename):
          pass

     def parse_file():
          pass

참고URL : https://stackoverflow.com/questions/12646326/calling-a-class-function-inside-of-init