b74592ea41
Break down examples into module files to make easier to read. Use full-definitions on Enums (PyQt6 compatible, better documenting). Add fixes for Qt6 versions & some general bugfixes.
92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
import traceback
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import constants
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import requests
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# import requests_cache
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from PyQt5.QtCore import (
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QObject,
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QRunnable,
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pyqtSignal,
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pyqtSlot,
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)
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class WorkerSignals(QObject):
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"""
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Defines the signals available from a running worker thread.
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"""
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finished = pyqtSignal()
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error = pyqtSignal(tuple)
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progress = pyqtSignal(int)
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data = pyqtSignal(dict, list)
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cancel = pyqtSignal()
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class UpdateWorker(QRunnable):
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"""
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Worker thread for updating currency.
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"""
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signals = WorkerSignals()
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def __init__(self, base_currency):
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super().__init__()
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self.is_interrupted = False
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self.base_currency = base_currency
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self.signals.cancel.connect(self.cancel)
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@pyqtSlot()
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def run(self):
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auth_header = {"Apikey": constants.CRYPTOCOMPARE_API_KEY}
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try:
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rates = {}
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for n, crypto in enumerate(constants.AVAILABLE_CRYPTO_CURRENCIES, 1):
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url = "https://min-api.cryptocompare.com/data/histoday?fsym={fsym}&tsym={tsym}&limit={limit}"
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r = requests.get(
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url.format(
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**{
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"fsym": crypto,
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"tsym": self.base_currency,
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"limit": constants.NUMBER_OF_TIMEPOINTS - 1,
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"extraParams": "www.pythonguis.com",
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"format": "json",
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}
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),
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headers=auth_header,
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)
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r.raise_for_status()
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rates[crypto] = r.json().get("Data")
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self.signals.progress.emit(int(100 * n / len(constants.AVAILABLE_CRYPTO_CURRENCIES)))
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if self.is_interrupted:
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# Stop without emitting finish signals.
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return
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url = "https://min-api.cryptocompare.com/data/exchange/histoday?tsym={tsym}&limit={limit}"
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r = requests.get(
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url.format(
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**{
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"tsym": self.base_currency,
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"limit": constants.NUMBER_OF_TIMEPOINTS - 1,
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"extraParams": "www.pythonguis.com",
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"format": "json",
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}
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),
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headers=auth_header,
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)
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r.raise_for_status()
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volume = [d["volume"] for d in r.json().get("Data")]
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except Exception as e:
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self.signals.error.emit((e, traceback.format_exc()))
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return
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self.signals.data.emit(rates, volume)
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self.signals.finished.emit()
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def cancel(self):
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self.is_interrupted = True
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