CODEWITHSUNDEEP
pythonoopinstance
Kshitij Saraogi
Kshitij Saraogi

Reputation: 7609

Defining instance variables using functions and instance methods in __init__

I have the defined the following class as:

def user_kitchen(handle):
    # return a BeautifulSoup object


class User(object):

    def __init__(self, handle):
        self.handle = str(handle)
        self.soup = user_kitchen(handle)
        self.details = self.find_details()

    def find_details(self):
        value_map = {}
        for detail, attribute in details_map:
            value = (self.soup).find_all(attrs=attribute)[0].text
            value_map[detail] = value
        return value_map

When I instantiate the class User as:

me = User('torvalds')

I am getting a NameError: name 'self' is not defined

Here is the traceback:

In []: me = User('torvalds')
NameError                         Traceback (most recent call last)
<ipython-input-61-f6d334f2ee24> in <module>()
----> 1 me = User('torvalds')

/home/user.py in __init__(self, handle)
     28         value_map = {}
     29         for detail, attribute in details_map:
---> 30             value = (self.soup).find_all(attrs=attribute)[0].text
     31             value_map[detail] = value
     32         return value_map

/home/user.py in _find_details(detail)
     18 
     19 
---> 20 class User(object):
     21 
     22     def __init__(self, handle):

NameError: name 'self' is not defined

I have looked at few similar questions on SO about calling instance methods from __init__ method:

Yet I am unable to fix this.

Upvotes: 0

Views: 609

Answers (1)

masnun
masnun

Reputation: 11906

According to your stack trace, I see a method with the signature - _find_details(detail). Inside that method, there's a line like - value = (self.soup).find_all(attrs=attribute)[0].text.

Your method doesn't take in self as the first parameter. So it can't find self in that context. Make it _find_details(self, detail) - then it should work.

Upvotes: 1

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