62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
import requests
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import urllib.parse
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from flask import redirect, render_template, request, session
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from functools import wraps
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def apology(message, code=400):
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"""Render message as an apology to user."""
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def escape(s):
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"""
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Escape special characters.
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https://github.com/jacebrowning/memegen#special-characters
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"""
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for old, new in [("-", "--"), (" ", "-"), ("_", "__"), ("?", "~q"),
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("%", "~p"), ("#", "~h"), ("/", "~s"), ("\"", "''")]:
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s = s.replace(old, new)
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return s
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return render_template("apology.html", top=code, bottom=escape(message)), code
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def login_required(f):
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"""
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Decorate routes to require login.
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http://flask.pocoo.org/docs/1.0/patterns/viewdecorators/
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"""
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@wraps(f)
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def decorated_function(*args, **kwargs):
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if session.get("user_id") is None:
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return redirect("/login")
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return f(*args, **kwargs)
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return decorated_function
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def lookup(symbol):
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"""Look up quote for symbol."""
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# Contact API
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try:
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response = requests.get(f"https://api.iextrading.com/1.0/stock/{urllib.parse.quote_plus(symbol)}/quote")
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response.raise_for_status()
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except requests.RequestException:
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return None
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# Parse response
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try:
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quote = response.json()
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return {
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"name": quote["companyName"],
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"price": float(quote["latestPrice"]),
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"symbol": quote["symbol"]
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}
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except (KeyError, TypeError, ValueError):
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return None
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def usd(value):
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"""Format value as USD."""
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return f"${value:,.2f}"
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