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from datetime import datetime |
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import re |
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from typing import ClassVar, final |
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from sqlalchemy import ( |
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Boolean, |
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Column, |
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Date, |
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ForeignKey, |
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MetaData, |
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SmallInteger, |
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String, |
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Table, |
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text, |
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) |
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from src.new_data_processors.common import ( |
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UICTableUpdater, |
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) |
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from src.new_data_processors.common_excel_processors import ExcelProcessorSimple |
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from src.new_data_processors.helper_table_updaters.countries import CountriesUpdater |
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@final |
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# TODO: add logging |
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class CompaniesUpdater(ExcelProcessorSimple, UICTableUpdater): |
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TABLE_NAME: ClassVar[str] = "companies" |
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database_metadata: ClassVar[MetaData] = MetaData() |
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table: ClassVar[Table] = Table( |
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TABLE_NAME, |
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database_metadata, |
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Column( |
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name="code_uic", |
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type_=SmallInteger, |
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nullable=False, |
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index=True, |
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primary_key=True, |
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), |
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Column(name="short_name", type_=String(255)), |
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Column(name="name", type_=String(255), nullable=False), |
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Column( |
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"country_code_iso", |
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String(2), |
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ForeignKey(CountriesUpdater.table.c.code_iso), |
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nullable=False, |
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), |
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Column(name="allocation_date", type_=Date), |
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Column(name="modified_date", type_=Date), |
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Column(name="begin_of_validity", type_=Date), |
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Column(name="end_of_validity", type_=Date), |
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Column(name="freight", type_=Boolean, nullable=False), |
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Column(name="passenger", type_=Boolean, nullable=False), |
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Column(name="infrastructure", type_=Boolean, nullable=False), |
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Column(name="holding", type_=Boolean), |
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Column(name="integrated", type_=Boolean), |
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Column(name="other", type_=Boolean, nullable=False), |
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Column(name="url", type_=String(255)), |
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) |
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def __init__(self) -> None: |
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super().__init__() |
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self.DATA_URL = f"{self.DATA_BASE_URL}3023" |
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self._data_to_process = self.get_data(self.DATA_URL) |
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self.logger.info(f"{self.__class__.__name__} initialized!") |
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def correct_column_names(self) -> None: |
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self.replace_nonword_with_underscore() |
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self.rename_columns_manually() |
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def replace_nonword_with_underscore(self) -> None: |
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# TODO: report wrong display of newlines in DataFrame view to pandas developers |
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self.data.rename( |
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columns=lambda x: re.sub( |
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pattern=r"[\n ]", |
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repl="_", |
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string=x, |
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).lower(), |
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inplace=True, |
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) |
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def rename_columns_manually(self) -> None: |
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self.data.rename( |
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columns={ |
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"code": "code_uic", |
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"full_name": "name", |
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"country": "country_code_iso", |
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"infra-_structure": "infrastructure", |
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"url": "url", |
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}, |
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inplace=True, |
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) |
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def delete_data(self) -> None: |
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self.remove_invalid_and_irrelevant_companies() |
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self.drop_unnecessary_columns() |
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self.remove_invalid_companies() |
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def remove_invalid_and_irrelevant_companies(self) -> None: |
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self.data.dropna( |
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subset=[ |
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"allocation_date", |
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"infrastructure", |
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], |
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inplace=True, |
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) |
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def drop_unnecessary_columns(self) -> None: |
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self.data.drop( |
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columns=[ |
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"request_date", |
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"recent", |
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], |
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inplace=True, |
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) |
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def remove_invalid_companies(self) -> None: |
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# future: report bug below to JetBrains or pandas developers |
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# noinspection PyUnusedLocal |
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today = datetime.today() |
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self.data.query( |
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expr="(begin_of_validity.isnull() or begin_of_validity <= @today) and (end_of_validity.isnull() or @today <= end_of_validity)", |
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inplace=True, |
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) |
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def correct_boolean_values(self) -> None: |
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boolean_columns = [ |
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"freight", |
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"passenger", |
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"infrastructure", |
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"holding", |
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"integrated", |
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"other", |
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] |
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for column in boolean_columns: |
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self.data[column] = self.data[column].apply(lambda x: x == "x" or x == "X") |
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def add_data(self) -> None: |
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with self.database.engine.begin() as connection: |
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queries = [ |
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""" |
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insert ignore into companies ( |
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code_uic, |
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short_name, |
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name, |
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country_code_iso, |
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allocation_date, |
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modified_date, |
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begin_of_validity, |
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end_of_validity, |
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freight, |
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passenger, |
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infrastructure, |
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holding, |
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integrated, |
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other, |
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url |
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) |
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values ( |
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:code_uic, |
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:short_name, |
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:name, |
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:country_code_iso, |
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:allocation_date, |
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:modified_date, |
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:begin_of_validity, |
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:end_of_validity, |
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:freight, |
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:passenger, |
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:infrastructure, |
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:holding, |
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:integrated, |
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:other, |
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:url |
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) |
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""", |
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""" |
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update companies |
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set |
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short_name = :short_name, |
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name = :name, |
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country_code_iso = :country_code_iso, |
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allocation_date = :allocation_date, |
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modified_date = :modified_date, |
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begin_of_validity = :begin_of_validity, |
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end_of_validity = :end_of_validity, |
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freight = :freight, |
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passenger = :passenger, |
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infrastructure = :infrastructure, |
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holding = :holding, |
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integrated = :integrated, |
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other = :other, |
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url = :url |
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where |
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code_uic = :code_uic |
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""", |
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] |
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for index, row in self.data.iterrows(): |
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for query in queries: |
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connection.execute( |
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text(query), |
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row.to_dict(), |
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) |
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gy-mate /
kalauz
