-
Notifications
You must be signed in to change notification settings - Fork 3
/
helpers.py
61 lines (48 loc) · 1.61 KB
/
helpers.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
import requests
import urllib.parse
from flask import redirect, render_template, request, session
from functools import wraps
def apology(message, code=400):
"""Render message as an apology to user."""
def escape(s):
"""
Escape special characters.
https://github.com/jacebrowning/memegen#special-characters
"""
for old, new in [("-", "--"), (" ", "-"), ("_", "__"), ("?", "~q"),
("%", "~p"), ("#", "~h"), ("/", "~s"), ("\"", "''")]:
s = s.replace(old, new)
return s
return render_template("apology.html", top=code, bottom=escape(message)), code
def login_required(f):
"""
Decorate routes to require login.
http://flask.pocoo.org/docs/0.12/patterns/viewdecorators/
"""
@wraps(f)
def decorated_function(*args, **kwargs):
if session.get("user_id") is None:
return redirect("/login")
return f(*args, **kwargs)
return decorated_function
def lookup(symbol):
"""Look up quote for symbol."""
# Contact API
try:
response = requests.get(f"https://api.iextrading.com/1.0/stock/{urllib.parse.quote_plus(symbol)}/quote")
response.raise_for_status()
except requests.RequestException:
return None
# Parse response
try:
quote = response.json()
return {
"name": quote["companyName"],
"price": float(quote["latestPrice"]),
"symbol": quote["symbol"]
}
except (KeyError, TypeError, ValueError):
return None
def usd(value):
"""Format value as USD."""
return f"${value:,.2f}"