class AboutMe:

    def __init__(self):
        self.name     = "SukJae Kim"
        self.language = "Python"
        self.company  = None
        self._skills()

    def _skills(self):
        """ done that even once """

        self.Data     = ["Pandas", "Pytorch", "Keras-tensorflow", "Scikit-learn", "matplotlib", "plotly", "numpy"]
        self.Back_end = ["Mysql", "Mongodb", "PostgreSQL", "Django", "FLask", "Docker", "Gunicorn", "Nginx",
                        ["AWS-EC2", "AWS-lambda", "AWS-S3", "AWS-kinesis"]]
        self.ETC      = ["Git", "Postman", "Swagger"]
        

    def __call__(self):           
        if not self.company:
            return print(f"\
                        I was learned about DA, DE, NLP, Back-end currntly interesting about DE, Back-end \n \
                        i have done this skills even once                                                 \n \
                        Data skills {self.Data}                                                           \n \
                        Back_end skills {self.Back_end}                                                   \n \
                        ETC skills {self.ETC}                                                             \n \
                        please input ur company after this message :) ")
            
        else :
            return print(f"\
                        I'm already from {self.company} even u don't want anymore                        \n \ 
                        thank u for ur kind :) ")



ksj = AboutMe()
ksj()
ksj.company = input()
ksj()