corrected offline error to be catched.
This commit is contained in:
Ivan Hörler
parent
6cf9d77cae
commit
b02e8c1343
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@ -24,117 +24,121 @@ def get_exchange_rate():
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# ~~~~~~~~~~~~~~~~~~~~~
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today = datetime.now().strftime("%Y-%m-%d")
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SNB_URL = 'https://www.snb.ch/selector/de/mmr/exfeed/rss'
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urlsocket = urllib.request.urlopen(SNB_URL)
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root = ET.parse(urlsocket)
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root = ET.ElementTree(root)
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urlsocket = ''
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try:
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urlsocket = urllib.request.urlopen(SNB_URL)
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except urllib.error.URLError as e:
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print('err: urllib.request.urlopen: ', e.reason)
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if urlsocket:
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root = ET.parse(urlsocket)
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root = ET.ElementTree(root)
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# ~~~~~~~~~~~~~~~~~~~~~
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# development block:
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# ~~~~~~~~~~~~~~~~~~~~~
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# today = "2018-01-08"
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# try:
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# root = ET.ElementTree(file='rss')
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# except Exception as e:
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# print('exchange_rates.py_urlsocket failed %s (
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# %s) on date: %s for %s'
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# % (e, type(e), root))
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# ~~~~~~~~~~~~~~~~~~~~~
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# ~~~~~~~~~~~~~~~~~~~~~
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# development block:
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# ~~~~~~~~~~~~~~~~~~~~~
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# today = "2018-01-03"
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# try:
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# root = ET.ElementTree(file='rss')
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# except Exception as e:
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# print('exchange_rates.py_urlsocket failed %s (
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# %s) on date: %s for %s'
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# % (e, type(e), root))
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# ~~~~~~~~~~~~~~~~~~~~~
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# Namespaces
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ns = {'rdf': 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
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'none': 'http://purl.org/rss/1.0/',
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'dc': 'http://purl.org/dc/elements/1.1/',
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'dcterms': 'http://purl.org/dc/terms/',
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'cb': 'http://www.cbwiki.net/wiki/index.php/Specification_1.2/'
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}
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# Pathvariables to XML Namespaces
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rate_path = 'cb:statistics/cb:exchangeRate/'
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observation_path = 'cb:statistics/cb:exchangeRate/cb:observation/'
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exchange_rates = {}
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for item in root.findall('none:item', ns):
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# for eatch item n the list we grab the release date
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# to evaluate if its fresh data or old:
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# Namespaces
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ns = {'rdf': 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
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'none': 'http://purl.org/rss/1.0/',
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'dc': 'http://purl.org/dc/elements/1.1/',
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'dcterms': 'http://purl.org/dc/terms/',
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'cb': 'http://www.cbwiki.net/wiki/index.php/Specification_1.2/'
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}
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# Pathvariables to XML Namespaces
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rate_path = 'cb:statistics/cb:exchangeRate/'
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observation_path = 'cb:statistics/cb:exchangeRate/cb:observation/'
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exchange_rates = {}
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for item in root.findall('none:item', ns):
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# for eatch item n the list we grab the release date
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# to evaluate if its fresh data or old:
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# THE CURRENCY DATE:
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datetime_str = item.find('dc:date', ns).text
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# convert string to date object:
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# https://stackoverflow.com/a/12282040/4061870
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# seams like snb striked the microsecond somewhere
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# between Nov. and Dez. 2017 so maybe first check
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# time type is with milliseconds:
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try:
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date = datetime.strptime(''.join(
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datetime_str.rsplit(':', 1)),
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"%Y-%m-%dT%H:%M:%S%z").strftime(
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"%Y-%m-%d")
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except Exception as e:
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print('%s (%s)' % (e, type(e)))
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# THE CURRENCY DATE:
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datetime_str = item.find('dc:date', ns).text
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# convert string to date object:
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# https://stackoverflow.com/a/12282040/4061870
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# seams like snb striked the microsecond somewhere
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# between Nov. and Dez. 2017 so maybe first check
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# time type is with milliseconds:
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try:
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date = datetime.strptime(''.join(
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datetime_str.rsplit(':', 1)),
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"%Y-%m-%dT%H:%M:%S.%f%z").strftime(
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"%Y-%m-%dT%H:%M:%S%z").strftime(
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"%Y-%m-%d")
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continue
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except Exception as e:
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print('%s (%s)' % (e, type(e)))
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continue
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# Print dates for development:
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# print("date:", date, "today:", today)
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# only the values of today are used so check for date in XML:
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if date == today:
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# now search for the currency exchange rate:
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target_currency = item.find(rate_path +
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'cb:targetCurrency', ns).text
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value = float(item.find(observation_path +
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'cb:value', ns).text)
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value = float(value) # convert to float
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foreign_value = value # copy to new value to have both.
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try:
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date = datetime.strptime(''.join(
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datetime_str.rsplit(':', 1)),
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"%Y-%m-%dT%H:%M:%S.%f%z").strftime(
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"%Y-%m-%d")
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continue
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except Exception as e:
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print('%s (%s)' % (e, type(e)))
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continue
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# Print dates for development:
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# print("date:", date, "today:", today)
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# only the values of today are used so check for date in XML:
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if date == today:
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# now search for the currency exchange rate:
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target_currency = item.find(rate_path +
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'cb:targetCurrency', ns).text
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value = float(item.find(observation_path +
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'cb:value', ns).text)
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value = float(value) # convert to float
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foreign_value = value # copy to new value to have both.
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if item.find(observation_path + 'cb:unit_mult', ns) is None:
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# because it's dangerous to check for present,
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# i check for none here and have to set the target
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# to 1. as im multiplying it later.
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unit_mult = float("1.0")
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if item.find(observation_path + 'cb:unit_mult', ns) is None:
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# because it's dangerous to check for present,
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# i check for none here and have to set the target
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# to 1. as im multiplying it later.
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unit_mult = float("1.0")
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else:
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# shift left by 2 digits with "/"
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# https://stackoverflow.com/questions/8362792/
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# because some currencys differ widly from CHF
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unit_mult = item.find(observation_path +
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'cb:unit_mult', ns).text
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# unit_mult defaults to '0' so we check for 8 decimal
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# values (2..-6) they represent the fracton value to
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# calculate the correct decimalpoint.
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if unit_mult == '2': # thinking of Bitcoins
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unit_mult = '0.01'
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if unit_mult == '1':
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unit_mult = '0.10'
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if unit_mult == '-1':
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unit_mult = '10'
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if unit_mult == '-2': # Japan Yen
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unit_mult = '100'
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if unit_mult == '-3':
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unit_mult = '1000'
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if unit_mult == '-4':
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unit_mult = '10000'
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if unit_mult == '-5':
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unit_mult = '100000'
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if unit_mult == '-6': # indian rupies
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unit_mult = '1000000'
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unit_mult = float(unit_mult) # convert to float
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# calculate the Currency to CHF:
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foreign_value = 1 / value
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foreign_value *= unit_mult
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value = value / unit_mult
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# truncate it to decimal values provided by the xml:
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foreign_value_round = round(foreign_value, 5)
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# Print nice setup of all calculated currencys for development:
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# print("date:", date, " 1 ", target_currency, " costs: ",
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# CHFvalue, "CHF and 1 ", base_currency, " costs: ",
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# FOREIGNvalue_round, target_currency)
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exchange_rates.update(
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{target_currency: foreign_value_round})
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# Print the Dictionary:
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# print(exchange_rates)
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else:
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# shift left by 2 digits with "/"
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# https://stackoverflow.com/questions/8362792/
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# because some currencys differ widly from CHF
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unit_mult = item.find(observation_path +
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'cb:unit_mult', ns).text
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# unit_mult defaults to '0' so we check for 8 decimal
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# values (2..-6) they represent the fracton value to
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# calculate the correct decimalpoint.
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if unit_mult == '2': # thinking of Bitcoins
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unit_mult = '0.01'
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if unit_mult == '1':
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unit_mult = '0.10'
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if unit_mult == '-1':
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unit_mult = '10'
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if unit_mult == '-2': # Japan Yen
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unit_mult = '100'
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if unit_mult == '-3':
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unit_mult = '1000'
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if unit_mult == '-4':
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unit_mult = '10000'
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if unit_mult == '-5':
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unit_mult = '100000'
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if unit_mult == '-6': # indian rupies
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unit_mult = '1000000'
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unit_mult = float(unit_mult) # convert to float
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# calculate the Currency to CHF:
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foreign_value = 1 / value
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foreign_value *= unit_mult
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value = value / unit_mult
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# truncate it to decimal values provided by the xml:
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foreign_value_round = round(foreign_value, 5)
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# Print nice setup of all calculated currencys for development:
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# print("date:", date, " 1 ", target_currency, " costs: ",
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# CHFvalue, "CHF and 1 ", base_currency, " costs: ",
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# FOREIGNvalue_round, target_currency)
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exchange_rates.update(
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{target_currency: foreign_value_round})
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# Print the Dictionary:
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# print(exchange_rates)
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else:
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break
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return(exchange_rates, today)
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continue
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return(exchange_rates, today)
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@ -14,13 +14,13 @@
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<tr>
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<th scope="col">DATE</th>
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<th scope="col">RATE</th>
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<tr>
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</tr>
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{% for currency in currency_USD_list %}
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<tr>
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<td scope="col">{{ currency.date.date }}</td>
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<td scope="col">{{ currency.exchange_rate_to_chf }}</td>
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</tr>
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{% endfor %}
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<tr>
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</table>
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{% else %}
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<p class="alert">
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@ -34,13 +34,13 @@
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<tr>
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<th scope="col">DATE</th>
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<th scope="col">RATE</th>
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<tr>
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</tr>
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{% for currency in currency_EUR_list %}
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<tr>
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<td scope="col">{{ currency.date.date }}</td>
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<td scope="col">{{ currency.exchange_rate_to_chf }}</td>
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</tr>
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{% endfor %}
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<tr>
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</table>
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{% else %}
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<p class="alert">
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@ -54,11 +54,12 @@
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<tr>
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<th scope="col">DATE</th>
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<th scope="col">RATE</th>
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<tr>
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</tr>
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{% for currency in currency_JPY_list %}
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<tr>
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<td scope="col">{{ currency.date.date }}</td>
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<td scope="col">{{ currency.exchange_rate_to_chf }}</td>
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</tr>
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{% endfor %}
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<tr>
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</table>
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@ -74,11 +75,12 @@
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<tr>
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<th scope="col">DATE</th>
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<th scope="col">RATE</th>
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<tr>
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</tr>
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{% for currency in currency_GBP_list %}
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<tr>
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<td scope="col">{{ currency.date.date }}</td>
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<td scope="col">{{ currency.exchange_rate_to_chf }}</td>
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</tr>
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{% endfor %}
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<tr>
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</table>
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@ -12,67 +12,71 @@ def currencies(request):
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# prepares the view all dynamicaly.
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# It can grow in terms of more Currencies over time automaticaly.
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today = ''
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raw_data = ''
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raw_data, today = exchange_rates.get_exchange_rate()
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print('views raw_data: ', raw_data) # assert False
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raw_data = []
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try:
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raw_data, today = exchange_rates.get_exchange_rate()
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except Exception as e:
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print('views raw_data: ', raw_data, 'error:', e) # assert False
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message_no = "Already querried today: "
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message_yes = " Updated successfully: "
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for currency, rate in raw_data.items():
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if ExchangeRate.objects.filter(
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date__date=today,
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name__name=currency):
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message_no += currency + ", "
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# A: https://stackoverflow.com/a/27802801/4061870
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else:
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if ExchangeRate_date.objects.filter(date=today)[:1]:
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try:
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# lustigerweise gibt .values() den value und die id
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# zurück. Ohne .values() gibts nur den "value"
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date_dict = ExchangeRate_date.objects.filter(
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date=today).values()
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except Exception as e:
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print('exdate_exists %s (%s) on %s'
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% (e, type(e), today))
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if raw_data:
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print(raw_data)
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for currency, rate in raw_data.items():
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if ExchangeRate.objects.filter(
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date__date=today,
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name__name=currency):
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message_no += currency + ", "
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# A: https://stackoverflow.com/a/27802801/4061870
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else:
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if ExchangeRate_date.objects.filter(date=today)[:1]:
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try:
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# lustigerweise gibt .values() den value und die id
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# zurück. Ohne .values() gibts nur den "value"
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date_dict = ExchangeRate_date.objects.filter(
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date=today).values()
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except Exception as e:
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print('exdate_exists %s (%s) on %s'
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% (e, type(e), today))
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else:
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try:
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exdate = ExchangeRate_date.objects.create(
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date=today)
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exdate.save()
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except Exception as e:
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print('exdate_not_exists %s (%s) for %s'
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% (e, type(e), today))
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if ExchangeRate_name.objects.filter(
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name=currency)[:1]:
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try:
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name_dict = ExchangeRate_name.objects.filter(
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name=currency).values()
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except Exception as e:
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print('exname_exists %s (%s) on %s'
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% (e, type(e), currency))
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else:
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try:
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exname = ExchangeRate_name.objects.create(
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name=currency)
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exname.save()
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except Exception as e:
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print('exname_not_exists %s (%s) on %s'
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% (e, type(e), currency))
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try:
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exdate = ExchangeRate_date.objects.create(
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date=today)
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exdate.save()
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except Exception as e:
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print('exdate_not_exists %s (%s) for %s'
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% (e, type(e), today))
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if ExchangeRate_name.objects.filter(
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name=currency)[:1]:
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try:
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name_dict = ExchangeRate_name.objects.filter(
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name=currency).values()
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except Exception as e:
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print('exname_exists %s (%s) on %s'
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% (e, type(e), currency))
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else:
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try:
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exname = ExchangeRate_name.objects.create(
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name=currency)
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exname.save()
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except Exception as e:
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print('exname_not_exists %s (%s) on %s'
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% (e, type(e), currency))
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try:
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exrate = ExchangeRate.objects.create(
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# name_id=name_id,
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name_id=ExchangeRate_name.objects.get(
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name=currency).id,
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# date_id=date_id,
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date_id=ExchangeRate_date.objects.get(
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date=today).id,
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exchange_rate_to_chf=rate,
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)
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exrate.save()
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message_yes += currency + ", "
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exrate = ExchangeRate.objects.create(
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# name_id=name_id,
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name_id=ExchangeRate_name.objects.get(
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name=currency).id,
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# date_id=date_id,
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date_id=ExchangeRate_date.objects.get(
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date=today).id,
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exchange_rate_to_chf=rate,
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)
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exrate.save()
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message_yes += currency + ", "
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except Exception as e:
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print('exrate_create %s (%s) on %s for %s'
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% (e, type(e), currency, today))
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except Exception as e:
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print('exrate_create %s (%s) on %s for %s'
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% (e, type(e), currency, today))
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# prepare messages:
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# python can not swap a char insinde a sting so i have
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