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# pyre-strict |
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""" |
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This module helps you work with payment texts such as |
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"*4321 29.06 USD 50.00 ITUNES.COM/BILL Rate: 1.0000". |
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""" |
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from re import compile as compile_regex |
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from typing import List, Any |
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import iso4217parse |
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class PaymentText: |
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""" |
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Use this class to represent your payment text. |
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""" |
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parts: List[str] = [] |
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def __init__(self, text: str) -> None: |
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self.parts = text.split() |
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def __repr__(self) -> str: |
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return ' '.join(self.parts) |
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def generalize(self) -> None: |
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""" |
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Remove all parts of the strings that are specific to just this payment, |
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in order to have a string that is the same across different payments of |
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the same type (e.g. a monthly payment to Apple for iCloud storage). |
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:return: |
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""" |
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self._clean_leading_card_number() |
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self._clean_leading_date() |
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self._clean_leading_amount_and_currency() |
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self._clean_trailing_exchange_rate() |
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self._clean_trailing_date() |
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self._clean_trailing_amount_and_currency() |
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def _clean_leading_card_number(self)-> None: |
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pattern = compile_regex(r'\*\d{4}') |
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try: |
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if pattern.match(self.parts[0]): |
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del self.parts[0] |
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except IndexError: |
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pass |
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def _clean_leading_date(self)-> None: |
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pattern = compile_regex(r'\d{2}\.\d{2}') |
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try: |
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if pattern.match(self.parts[0]): |
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del self.parts[0] |
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except IndexError: |
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pass |
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def _clean_leading_amount_and_currency(self)-> None: |
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try: |
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currency: Any = iso4217parse.by_alpha3(self.parts[0]) |
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if isinstance(currency, iso4217parse.Currency): |
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del self.parts[0] |
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del self.parts[0] |
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except IndexError: |
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pass |
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def _clean_trailing_exchange_rate(self)-> None: |
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pattern = compile_regex(r'\d{1}\.\d{4}') |
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try: |
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if pattern.match(self.parts[-1]): |
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del self.parts[-1] |
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del self.parts[-1] |
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except IndexError: |
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pass |
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def _clean_trailing_date(self)-> None: |
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pattern = compile_regex(r'\d{2}\.\d{2}\.\d{2}') |
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try: |
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if pattern.match(self.parts[-1]): |
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del self.parts[-1] |
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pattern = compile_regex(r'.+:') |
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if pattern.match(self.parts[-1]): |
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del self.parts[-1] |
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except IndexError: |
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pass |
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def _clean_trailing_amount_and_currency(self)-> None: |
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pattern = compile_regex(r'\d+,\d{2}') |
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try: |
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if pattern.match(self.parts[-1]): |
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del self.parts[-1] |
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currency: Any = iso4217parse.by_alpha3(self.parts[-1]) |
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if isinstance(currency, iso4217parse.Currency): |
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del self.parts[-1] |
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except IndexError: |
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pass |
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yhoiseth /
paytext
