prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Kanal7 Defective again
  Only 2 months later they have changed the design.
  
  Not opening with latest 0.9.0 Release:
  
  [cli][info] Found matching plugin kanal7 for URL http://www.kanal7.com/canli-izle
  error: No playable streams found on this URL: http://www.kanal7.com/canli-izle
  
  </issue>
  <code>
  [start of src/streamlink/plugins/kanal7.py]
  1 from __future__ import print_function
  2 import re
  3 
  4 from streamlink.plugin import Plugin
  5 from streamlink.plugin.api import http
  6 from streamlink.plugin.api import useragents
  7 from streamlink.plugin.api import validate
  8 from streamlink.stream import HLSStream
  9 
  10 
  11 class Kanal7(Plugin):
  12     url_re = re.compile(r"https?://(?:www.)?kanal7.com/canli-izle")
  13     iframe_re = re.compile(r'iframe .*?src="(http://[^"]*?)"')
  14     stream_re = re.compile(r'src="(http[^"]*?)"')
  15 
  16     @classmethod
  17     def can_handle_url(cls, url):
  18         return cls.url_re.match(url) is not None
  19 
  20     def find_iframe(self, url):
  21         res = http.get(url)
  22         # find iframe url
  23         iframe = self.iframe_re.search(res.text)
  24         iframe_url = iframe and iframe.group(1)
  25         if iframe_url:
  26             self.logger.debug("Found iframe: {}", iframe_url)
  27         return iframe_url
  28 
  29     def _get_streams(self):
  30         iframe1 = self.find_iframe(self.url)
  31         if iframe1:
  32             iframe2 = self.find_iframe(iframe1)
  33             if iframe2:
  34                 ires = http.get(iframe2)
  35                 stream_m = self.stream_re.search(ires.text)
  36                 stream_url = stream_m and stream_m.group(1)
  37                 if stream_url:
  38                     yield "live", HLSStream(self.session, stream_url, headers={"Referer": iframe2})
  39             else:
  40                 self.logger.error("Could not find second iframe, has the page layout changed?")
  41         else:
  42             self.logger.error("Could not find iframe, has the page layout changed?")
  43 
  44 
  45 __plugin__ = Kanal7
  46
  [end of src/streamlink/plugins/kanal7.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/src/streamlink/plugins/kanal7.py b/src/streamlink/plugins/kanal7.py
  --- a/src/streamlink/plugins/kanal7.py
  +++ b/src/streamlink/plugins/kanal7.py
  @@ -11,7 +11,7 @@
   class Kanal7(Plugin):
       url_re = re.compile(r"https?://(?:www.)?kanal7.com/canli-izle")
       iframe_re = re.compile(r'iframe .*?src="(http://[^"]*?)"')
  -    stream_re = re.compile(r'src="(http[^"]*?)"')
  +    stream_re = re.compile(r'''tp_file\s+=\s+['"](http[^"]*?)['"]''')
   
       @classmethod
       def can_handle_url(cls, url):
  
verification_info: {"golden_diff": "diff --git a/src/streamlink/plugins/kanal7.py b/src/streamlink/plugins/kanal7.py\n--- a/src/streamlink/plugins/kanal7.py\n+++ b/src/streamlink/plugins/kanal7.py\n@@ -11,7 +11,7 @@\n class Kanal7(Plugin):\n     url_re = re.compile(r\"https?://(?:www.)?kanal7.com/canli-izle\")\n     iframe_re = re.compile(r'iframe .*?src=\"(http://[^\"]*?)\"')\n-    stream_re = re.compile(r'src=\"(http[^\"]*?)\"')\n+    stream_re = re.compile(r'''tp_file\\s+=\\s+['\"](http[^\"]*?)['\"]''')\n \n     @classmethod\n     def can_handle_url(cls, url):\n", "issue": "Kanal7 Defective again\nOnly 2 months later they have changed the design.\r\n\r\nNot opening with latest 0.9.0 Release:\r\n\r\n[cli][info] Found matching plugin kanal7 for URL http://www.kanal7.com/canli-izle\r\nerror: No playable streams found on this URL: http://www.kanal7.com/canli-izle\n", "before_files": [{"content": "from __future__ import print_function\nimport re\n\nfrom streamlink.plugin import Plugin\nfrom streamlink.plugin.api import http\nfrom streamlink.plugin.api import useragents\nfrom streamlink.plugin.api import validate\nfrom streamlink.stream import HLSStream\n\n\nclass Kanal7(Plugin):\n    url_re = re.compile(r\"https?://(?:www.)?kanal7.com/canli-izle\")\n    iframe_re = re.compile(r'iframe .*?src=\"(http://[^\"]*?)\"')\n    stream_re = re.compile(r'src=\"(http[^\"]*?)\"')\n\n    @classmethod\n    def can_handle_url(cls, url):\n        return cls.url_re.match(url) is not None\n\n    def find_iframe(self, url):\n        res = http.get(url)\n        # find iframe url\n        iframe = self.iframe_re.search(res.text)\n        iframe_url = iframe and iframe.group(1)\n        if iframe_url:\n            self.logger.debug(\"Found iframe: {}\", iframe_url)\n        return iframe_url\n\n    def _get_streams(self):\n        iframe1 = self.find_iframe(self.url)\n        if iframe1:\n            iframe2 = self.find_iframe(iframe1)\n            if iframe2:\n                ires = http.get(iframe2)\n                stream_m = self.stream_re.search(ires.text)\n                stream_url = stream_m and stream_m.group(1)\n                if stream_url:\n                    yield \"live\", HLSStream(self.session, stream_url, headers={\"Referer\": iframe2})\n            else:\n                self.logger.error(\"Could not find second iframe, has the page layout changed?\")\n        else:\n            self.logger.error(\"Could not find iframe, has the page layout changed?\")\n\n\n__plugin__ = Kanal7\n", "path": "src/streamlink/plugins/kanal7.py"}]}