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msg/ExchangeMsg.py

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+from bot.DaMsg import DaMsg
+from exchange.Cbr import Cbr
+
+
+class ExchangeMsg(DaMsg):
+
+    @staticmethod
+    def get_msg(data=None) -> str:
+        if data is None:
+            data = {}
+        cbr = Cbr()
+        currencies = cbr.get_by_codes()
+        msg = '📈 Курс валют ЦБ РФ на сегодня:\n\n'
+        for currency in currencies:
+            circle = ExchangeMsg.get_circle(currency['Value'], currency['Previous'])
+            arrow = ExchangeMsg.get_arrow(currency['Value'], currency['Previous'])
+            msg = msg + "{n}: {c} <b>{v}</b> {a}\n\n".format(n=currency['Name'], c=circle, v=currency['Value'], a=arrow)
+
+        msg = msg + "&#128073; <a href='https://t.me/prosmi_bot'>Предложить новость</a>"
+
+        return msg
+
+    @staticmethod
+    def get_arrow(value, previous) -> str:
+        if value > previous:
+            return "&#11014;"
+
+        return "&#11015;"
+
+    @staticmethod
+    def get_circle(value, previous) -> str:
+        if value > previous:
+            return "&#128994;"
+
+        return "&#128308;"