Some code readability improvements

[ablearthy]

1. Take out user agent, because it appears here, here.

2. Typo

3. This might be rewritten:

def to_hex(s):
  n = int(s.lstrip('#'), 16)
  return (n >> 16, (n >> 8) & 0xff, n & 0xff)

4. I guess we can simplify it.

def isInside(self, x, y):
  return self.x <= x <= self.x2 and self.y <= y <= self.y2

[Kislorod4ik]

Thanks, I fixed it. But the user agent is needed here because the site blocks requests from the python user agent.

[ablearthy]

Oh, under 'take out' I mean the following (there is duplication of the data, so User-Agent can be a 'constant'):

USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36"

def f(url):
   return requests.get(url, headers={"User-Agent": USER_AGENT})
...
def g():
   r = requests.get(url, headers={"User-Agent": USER_AGENT})

Or even (but merging two dicts in Python < 3.9 is kind of ugly):

USER_AGENT = {"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36"}
def f(url):
   return requests.get(url, headers=USER_AGENT)
...
def g():
   r = requests.get(url, headers=USER_AGENT)