How to call function which construct in class and want to call that function in same class and store return value in Python?

Question

I am newbie in python OOPs programming. I stuck in one problem. I want to make class. I tried to write function in class. Now I want to call function in same class and want to store return value in variable within class.

Example:

class extract_user_profile(object):

    #ukNames = []

    def __init__(self,data,pdf_to_text_list,text_prop_dict,text_dict):

        self.data = data
        self.pdf_to_text_list = pdf_to_text_list
        self.text_prop_dict = text_prop_dict
        self.text_dict = text_dict

    def read_csv(input_file):
        file = open(input_file, 'r')
        reader = csv.reader(file)
        return reader

    def person_name_list(self,dir_path):
        file_name = 'uknames.csv'
        reader = self.read_csv(dir_path + file_name)
        name_list = []
        for row in reader:
            name_list.append(row[0].lower())
        return name_list
    dir_path = "/Users/imac086/Documents/premal/projects_Quix/CV_parsing/ResumeParser-master/"


    u = person_name_list(dir_path) # I want to call person_name_list function in class

    def getName():
        for i in u: # I want to use u variable which I get from above. and this is in to the class
           print(u)

here I created two function in class now I want to call person_name_list function within class and store return value in variable within class. Like below I tried without class.

u = person_name_list(dir_path)

so here u variable have contain return value of person_name_list. those values I want to use in remaining functions.

I tired to use and call function like

u = self.person_name_list(self,dir_path)

I wrote self because I call read_csv file in that function also. it gives me error below:

NameError: name 'self' is not defined

So How can I do that? Please let me know. If I make any mistake in question please forgive me.