prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Discuss type for renewable category for Ukraine UA
  Currently, there is no breakdown for the Ukrainian renewable category provided on https://ua.energy/diyalnist/dyspetcherska-informatsiya/dobovyj-grafik-vyrobnytstva-spozhyvannya-e-e/
  
  The renewable category (ВДЕ) is mapped as "wind" in the parser, because wind used to be the dominant source in the past.
  Going through the last few days on the website, you will notice a very clear solar peak at noon (~1.200. MW) each day. Wind at nighttimes reaches a maximum value of ~400 MW, mostly it is around 200 MW.
  
  Here is an example for yesterday:
  ![image](https://user-images.githubusercontent.com/25743609/54950280-38726380-4f41-11e9-87ed-7f0ebf3db500.png)
  
  The installed capacity of solar grew very fast, and will continue because it's cheap and the potential in UA is huge:
  ![image](https://user-images.githubusercontent.com/25743609/54951450-f7c81980-4f43-11e9-8562-ee35a43528dc.png)
  
  Some suggestions to deal with this situation:
  1. Any artificial boundaries (depending on x-axis-time or y-axis-megawatts or both) pushing production to wind or solar?
  Like "from 06:00 to 18:00" -> solar if P > 200 MW, else wind". 
  2. Put renewables to unknown category with a mixed carbon intensity (looking at the intalled capacity, 50% wind : 50% solar seems reasonable).
  3. actively search for a breakdown of wind and solar
  4. ask the data provider for a breakdown
  
  </issue>
  <code>
  [start of parsers/UA.py]
  1 #!/usr/bin/env python3
  2 
  3 import arrow
  4 import dateutil
  5 import requests
  6 
  7 """
  8 tec - same as `tes` but also working as central heater,
  9       main fuel is gas, in critical situations - black oil
  10 gesgaes - hydro run of river and poundage
  11 consumptiongaespump - hydro pumped storage
  12 vde - wind + solar, mostly wind
  13 
  14 no data for biomass, solar and oil
  15 """
  16 MAP_GENERATION = {
  17     'aes': 'nuclear',
  18     'tec': 'gas',
  19     'tes': 'coal',
  20     'vde': 'wind',
  21     'biomass': 'biomass',
  22     'gesgaes': 'hydro',
  23     'solar': 'solar',
  24     'oil': 'oil',
  25     'geothermal': 'geothermal',
  26 }
  27 
  28 MAP_STORAGE = {
  29     'consumptiongaespump': 'hydro',
  30 }
  31 
  32 tz = 'Europe/Kiev'
  33 
  34 
  35 def fetch_production(zone_key='UA', session=None, target_datetime=None, logger=None):
  36     if target_datetime:
  37         raise NotImplementedError('This parser is not yet able to parse past dates')
  38     r = session or requests.session()
  39 
  40     data = []
  41     today = arrow.now(tz=tz).format('DD.MM.YYYY')
  42     url = 'https://ua.energy/wp-admin/admin-ajax.php'
  43     postdata = {
  44         'action': 'get_data_oes',
  45         'report_date': today,
  46         'type': 'day'
  47     }
  48 
  49     response = r.post(url, postdata)
  50 
  51     for serie in response.json():
  52         row = {
  53             'zoneKey': zone_key,
  54             'production': {},
  55             'storage': {},
  56             'source': 'ua.energy'
  57         }
  58 
  59         # Storage
  60         if 'consumptiongaespump' in serie:
  61             row['storage']['hydro'] = serie['consumptiongaespump'] * -1
  62 
  63         # Production
  64         for k, v in MAP_GENERATION.items():
  65             if k in serie:
  66                 row['production'][v] = serie[k]
  67             else:
  68                 row['production'][v] = 0.0
  69 
  70         # Date
  71         date = arrow.get('%s %s' % (today, serie['hour']), 'DD.MM.YYYY HH:mm')
  72         row['datetime'] = date.replace(tzinfo=dateutil.tz.gettz(tz)).datetime
  73 
  74         data.append(row)
  75     return data
  76 
  77 
  78 if __name__ == '__main__':
  79     print(fetch_production())
  80
  [end of parsers/UA.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/parsers/UA.py b/parsers/UA.py
  --- a/parsers/UA.py
  +++ b/parsers/UA.py
  @@ -9,18 +9,18 @@
         main fuel is gas, in critical situations - black oil
   gesgaes - hydro run of river and poundage
   consumptiongaespump - hydro pumped storage
  -vde - wind + solar, mostly wind
  +vde - renewable sources - mostly wind at nighttimes and solar peaks during the day
   
  -no data for biomass, solar and oil
   """
   MAP_GENERATION = {
       'aes': 'nuclear',
       'tec': 'gas',
       'tes': 'coal',
  -    'vde': 'wind',
  +    'vde': 'unknown',
       'biomass': 'biomass',
       'gesgaes': 'hydro',
       'solar': 'solar',
  +    'wind': 'wind',
       'oil': 'oil',
       'geothermal': 'geothermal',
   }
  
verification_info: {"golden_diff": "diff --git a/parsers/UA.py b/parsers/UA.py\n--- a/parsers/UA.py\n+++ b/parsers/UA.py\n@@ -9,18 +9,18 @@\n       main fuel is gas, in critical situations - black oil\n gesgaes - hydro run of river and poundage\n consumptiongaespump - hydro pumped storage\n-vde - wind + solar, mostly wind\n+vde - renewable sources - mostly wind at nighttimes and solar peaks during the day\n \n-no data for biomass, solar and oil\n \"\"\"\n MAP_GENERATION = {\n     'aes': 'nuclear',\n     'tec': 'gas',\n     'tes': 'coal',\n-    'vde': 'wind',\n+    'vde': 'unknown',\n     'biomass': 'biomass',\n     'gesgaes': 'hydro',\n     'solar': 'solar',\n+    'wind': 'wind',\n     'oil': 'oil',\n     'geothermal': 'geothermal',\n }\n", "issue": "Discuss type for renewable category for Ukraine UA\nCurrently, there is no breakdown for the Ukrainian renewable category provided on https://ua.energy/diyalnist/dyspetcherska-informatsiya/dobovyj-grafik-vyrobnytstva-spozhyvannya-e-e/\r\n\r\nThe renewable category (\u0412\u0414\u0415) is mapped as \"wind\" in the parser, because wind used to be the dominant source in the past.\r\nGoing through the last few days on the website, you will notice a very clear solar peak at noon (~1.200. MW) each day. Wind at nighttimes reaches a maximum value of ~400 MW, mostly it is around 200 MW.\r\n\r\nHere is an example for yesterday:\r\n![image](https://user-images.githubusercontent.com/25743609/54950280-38726380-4f41-11e9-87ed-7f0ebf3db500.png)\r\n\r\nThe installed capacity of solar grew very fast, and will continue because it's cheap and the potential in UA is huge:\r\n![image](https://user-images.githubusercontent.com/25743609/54951450-f7c81980-4f43-11e9-8562-ee35a43528dc.png)\r\n\r\nSome suggestions to deal with this situation:\r\n1. Any artificial boundaries (depending on x-axis-time or y-axis-megawatts or both) pushing production to wind or solar?\r\nLike \"from 06:00 to 18:00\" -> solar if P > 200 MW, else wind\". \r\n2. Put renewables to unknown category with a mixed carbon intensity (looking at the intalled capacity, 50% wind : 50% solar seems reasonable).\r\n3. actively search for a breakdown of wind and solar\r\n4. ask the data provider for a breakdown\n", "before_files": [{"content": "#!/usr/bin/env python3\n\nimport arrow\nimport dateutil\nimport requests\n\n\"\"\"\ntec - same as `tes` but also working as central heater,\n      main fuel is gas, in critical situations - black oil\ngesgaes - hydro run of river and poundage\nconsumptiongaespump - hydro pumped storage\nvde - wind + solar, mostly wind\n\nno data for biomass, solar and oil\n\"\"\"\nMAP_GENERATION = {\n    'aes': 'nuclear',\n    'tec': 'gas',\n    'tes': 'coal',\n    'vde': 'wind',\n    'biomass': 'biomass',\n    'gesgaes': 'hydro',\n    'solar': 'solar',\n    'oil': 'oil',\n    'geothermal': 'geothermal',\n}\n\nMAP_STORAGE = {\n    'consumptiongaespump': 'hydro',\n}\n\ntz = 'Europe/Kiev'\n\n\ndef fetch_production(zone_key='UA', session=None, target_datetime=None, logger=None):\n    if target_datetime:\n        raise NotImplementedError('This parser is not yet able to parse past dates')\n    r = session or requests.session()\n\n    data = []\n    today = arrow.now(tz=tz).format('DD.MM.YYYY')\n    url = 'https://ua.energy/wp-admin/admin-ajax.php'\n    postdata = {\n        'action': 'get_data_oes',\n        'report_date': today,\n        'type': 'day'\n    }\n\n    response = r.post(url, postdata)\n\n    for serie in response.json():\n        row = {\n            'zoneKey': zone_key,\n            'production': {},\n            'storage': {},\n            'source': 'ua.energy'\n        }\n\n        # Storage\n        if 'consumptiongaespump' in serie:\n            row['storage']['hydro'] = serie['consumptiongaespump'] * -1\n\n        # Production\n        for k, v in MAP_GENERATION.items():\n            if k in serie:\n                row['production'][v] = serie[k]\n            else:\n                row['production'][v] = 0.0\n\n        # Date\n        date = arrow.get('%s %s' % (today, serie['hour']), 'DD.MM.YYYY HH:mm')\n        row['datetime'] = date.replace(tzinfo=dateutil.tz.gettz(tz)).datetime\n\n        data.append(row)\n    return data\n\n\nif __name__ == '__main__':\n    print(fetch_production())\n", "path": "parsers/UA.py"}]}