Python library to get stock quotes from Yahoo! Finance
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#!/usr/bin/env python3
# stockquotes - Python module to pull stock quotes from Yahoo! Finance
# Copyright 2020 ScoopGracie. All rights reversed.
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
from bs4 import BeautifulSoup as bs
import requests
import datetime
class StockDoesNotExistError(Exception):
pass
class NetworkError(Exception):
pass
class Stock:
def __init__(self, ticker):
try:
r = requests.get(
f"https://finance.yahoo.com/quote/{ticker}/history",
headers={
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:92.0) Gecko/20100101 Firefox/92.0"
},
)
except:
raise NetworkError()
if r.status_code == 302:
raise StockDoesNotExistError(ticker)
try:
soup = bs(r.text, features="lxml")
self.symbol = soup.h1.string.split("(")[1].split(")")[0]
self.name = soup.h1.string.split("(")[0].strip()
rows = soup.table.tbody.find_all("tr")
self.historical = []
for i in rows:
row = i.find_all("td")
try:
parsed = {
"date": datetime.datetime.strptime(
row[0].span.string, "%b %d, %Y"
),
"open": float(row[1].span.string.replace(",", "")),
"high": float(row[2].span.string.replace(",", "")),
"low": float(row[3].span.string.replace(",", "")),
"close": float(row[4].span.string.replace(",", "")),
"adjusted_close": float(
row[5].span.string.replace(",", "")
),
"volume": int(row[6].span.string.replace(",", ""))
if row[6].string != "-"
else None,
}
except:
continue
self.historical.append(parsed)
price_selector = f'fin-streamer[data-field="regularMarketPrice"][data-symbol="{self.symbol}"]'
price_element = soup.select_one(price_selector)
self.current_price = float(price_element.text)
change_selector = f'fin-streamer[data-field="regularMarketChange"][data-symbol="{self.symbol}"]'
change_element = soup.select_one(change_selector)
self.increase_dollars = float(change_element.text)
change_percent_selector = f'fin-streamer[data-field="regularMarketChangePercent"][data-symbol="{self.symbol}"]'
change_percent_element = soup.select_one(change_percent_selector)
change_percent_text = ''.join([char for char in change_percent_element.text if char in '-.0123456789'])
self.increase_percent = float(change_percent_text)
except AttributeError as error:
raise StockDoesNotExistError(ticker) from error