我正在尝试运行Speculator库。在尝试运行时，我遇到了以下错误：
PC@PC:~/Speculator/speculator$ python3 main.py
INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): poloniex.com
Traceback (most recent call last):
File "main.py", line 92, in <module>
raise SystemExit(main())
File "main.py", line 59, in main
count=args.count, period=args.period)
File "/usr/local/lib/python3.5/dist-packages/speculator/market.py", line 48, in __init__
self.json = self.get_json()
File "/usr/local/lib/python3.5/dist-packages/speculator/market.py", line 59, in get_json
self.period, self.symbol)[0]
File "/usr/local/lib/python3.5/dist-packages/speculator/utils/poloniex.py", line 61, in chart_json
json = requests.get(url).json()
File "/usr/lib/python3/dist-packages/requests/models.py", line 808, in json
return complexjson.loads(self.text, **kwargs)
File "/usr/lib/python3.5/json/__init__.py", line 319, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.5/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.5/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
我认为来自此代码的错误：
import logging
import requests
from speculator.utils import date
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
def json_to_url(json, symbol):
""" Converts a JSON to a URL by the Poloniex API
Args:
json: JSON data as a list of dict dates, where the keys are
the raw market statistics.
symbol: String of currency pair, like a ticker symbol.
Returns:
String URL to Poloniex API representing the given JSON.
"""
start = json[0]['date']
end = json[-1]['date']
diff = end - start
# Get period by a ratio from calculated period to valid periods
# Ratio closest to 1 is the period
# Valid values: 300, 900, 1800, 7200, 14400, 86400
periods = [300, 900, 1800, 7200, 14400, 86400]
diffs = {}
for p in periods:
diffs[p] = abs(1 - (p / (diff / len(json)))) # Get ratio
period = min(diffs, key=diffs.get) # Find closest period
url = ('https://poloniex.com/public?command'
'=returnChartData¤cyPair={0}&start={1}'
'&end={2}&period={3}').format(symbol, start, end, period)
return url
def chart_json(start, end, period, symbol):
""" Requests chart data from Poloniex API
Args:
start: Int epoch date to START getting market stats from.
Note that this epoch is FURTHER from the current date.
end: Int epoch date to STOP getting market stats from.
Note that this epoch is CLOSER to the current date.
period: Int defining width of each chart candlestick in seconds.
Valid values: 300, 900, 1800, 7200, 14400, 86400
symbol: String of currency pair, like a ticker symbol.
Returns:
Tuple of (JSON data, URL to JSON).
JSON data as a list of dict dates, where the keys are
the raw market statistics.
String URL to Poloniex API representing the given JSON.
"""
url = ('https://poloniex.com/public?command'
'=returnChartData¤cyPair={0}&start={1}'
'&end={2}&period={3}').format(symbol, start, end, period)
logger.debug(' HTTP Request URL:\n{0}'.format(url))
json = requests.get(url).json()
logger.debug(' JSON:\n{0}'.format(json))
if 'error' in json:
logger.error(' Invalid parameters in URL for HTTP response')
raise SystemExit
elif all(val == 0 for val in json[0]):
logger.error(' Bad HTTP response. Time unit too short?')
raise SystemExit
elif len(json) < 1: # time to short
logger.error(' Not enough dates to calculate changes')
raise SystemExit
return json, url
def parse_changes(json):
""" Gets price changes from JSON
Args:
json: JSON data as a list of dict dates, where the keys are
the raw market statistics.
Returns:
List of floats of price changes between entries in JSON.
"""
changes = []
dates = len(json)
for date in range(1, dates):
last_close = json[date - 1]['close']
now_close = json[date]['close']
changes.append(now_close - last_close)
logger.debug('Market Changes (from JSON):\n{0}'.format(changes))
return changes
def get_gains_losses(changes):
""" Categorizes changes into gains and losses
Args:
changes: List of floats of price changes between entries in JSON.
Returns:
Dict of changes with keys 'gains' and 'losses'.
All values are positive.
"""
res = {'gains': [], 'losses': []}
for change in changes:
if change > 0:
res['gains'].append(change)
else:
res['losses'].append(change * -1)
logger.debug('Gains: {0}'.format(res['gains']))
logger.debug('Losses: {0}'.format(res['losses']))
return res
def get_attribute(json, attr):
""" Gets the values of an attribute from JSON
Args:
json: JSON data as a list of dict dates, where the keys are
the raw market statistics.
attr: String of attribute in JSON file to collect.
Returns:
List of values of specified attribute from JSON
"""
res = [json[entry][attr] for entry, _ in enumerate(json)]
logger.debug('{0}s (from JSON):\n{1}'.format(attr, res))
return res
def get_json_shift(year, month, day, unit, count, period, symbol):
""" Gets JSON from shifted date by the Poloniex API
Args:
year: Int between 1 and 9999.
month: Int between 1 and 12.
day: Int between 1 and 31.
unit: String of time period unit for count argument.
How far back to check historical market data.
Valid values: 'hour', 'day', 'week', 'month', 'year'
count: Int of units.
How far back to check historical market data.
period: Int defining width of each chart candlestick in seconds.
symbol: String of currency pair, like a ticker symbol.
Returns: JSON, list of dates where each entry is a dict of raw market data.
"""
epochs = date.get_end_start_epochs(year, month, day, 'last', unit, count)
return chart_json(epochs['shifted'], epochs['initial'],
period, symbol)[0]
问题出在 Poloniex api 上，我搜索了许多资源以获取解决方案，但找不到任何可行的方法。例如，有人说更改 IP 或使用 VNP 会有所帮助，但事实并非如此。其次，我尝试使用专用服务器，但问题仍然存在。
请建议我解决我的问题的最佳技术是什么。
有没有办法在通过请求库请求时摆脱谷歌验证码？我想这就是问题所在。