Question

当我运行$ python -m weatherterm -a USNY1192:1:US -p WeatherComParser -td时要在终端输出解析后的数据，我收到以下错误：

Traceback (most recent call last):
  File "C:\Python36\lib\runpy.py", line 193, in _run_module_as_main "__main__", mod_spec)
  File "C:\Python36\lib\runpy.py", line 85, in _run_code
      exec(code, run_globals)
  File "C:\Users\Reza\weather-app\weatherterm\weatherterm\__main__.py", line 81, in <module>
      parser = cls()
  File "C:\Users\Reza\weather-app\weatherterm\weatherterm\parsers\weather_com_parser.py", line 25, in __init__
      self._request = Request(self._base_url)
TypeError: object() takes no parameters

感谢你能否告诉我这里出了什么问题：

from weatherterm.core import ForecastType
import re
from weatherterm.core import Forecast
from weatherterm.core import Request
from weatherterm.core import Unit
from weatherterm.core import UnitConverter

from bs4 import BeautifulSoup


class WeatherComParser:

    def __init__(self):
        self._forecast = {
            ForecastType.TODAY: self._today_forecast,
            ForecastType.FIVEDAYS: self._five_and_ten_days_forecast,
            ForecastType.TENDAYS: self._five_and_ten_days_forecast,
            ForecastType.WEEKEND: self._weekend_forecast,
        }

        self._base_url = 'http://weather.com/weather/{forecast}/l/{area}'
        self._request = Request(self._base_url)

        self._temp_regex = re.compile('([0-9]+)\D{,2}([0-9]+)')
        self._only_digits_regex = re.compile('[0-9]+')

        self._unit_converter = UnitConverter(Unit.FAHRENHEIT)

    def _get_additional_info(self, content):
        data = tuple(item.td.span.get_text()
                     for item in content.table.tbody.children)
        return data[:2]

    def _clear_str_number(self, str_number):
        result = self._only_digits_regex.match(str_number)
        return '--' if result is None else result.group()

    def _parse(self, container, criteria):
        results = [self._get_data(item, criteria)
                   for item in container.children]

        return [result for result in results if result]

    def _get_data(self, container, search_items):
        scraped_data = {}

        for key, value in search_items.items():
            result = container.find(value, class_=key)

            data = None if result is None else result.get_text()

            if data is not None:
                scraped_data[key] = data

        return scraped_data

    def _today_forecast(self, args):
        # raise NotImplementedError()
        criteria = {
            'today_nowcard-temp': 'div',
            'today_nowcard-phrase': 'div',
            'today_nowcard-hilo': 'div',
        }

        content = self._request.fetch_data(args.forecast_option.value,
                                           args.area_code)

        bs = BeautifulSoup(content, 'html.parser')

        container = bs.find('section', class_='today_nowcard-container')

        weather_conditions = self._parse(container, criteria)

        if len(weather_conditions) < 1:
            raise Exception('Could not parse weather forecast for today.')

        weatherinfo = weather_conditions[0]

        temp_regex = re.compile(('H\s+([0-9]+|\-{,2}).+'
                                 'L\s+([0-9]+|\-{,2})'))
        temp_info = temp_regex.search(weatherinfo['today_nowcard-hilo'])
        high_temp, low_temp = temp_info.groups()

        side = container.find('div', class_='today_nowcard-sidecar')
        wind, humidity = self._get_additional_info(side)

        curr_temp = self._clear_str_number(weatherinfo['today_nowcard-temp'])

        self._unit_converter.dest_unit = args.unit

        td_forecast = Forecast(self._unit_converter.convert(curr_temp),
                               humidity,
                               wind,
                               high_temp=self._unit_converter.convert(
                                   high_temp),
                               low_temp=self._unit_converter.convert(
                                   low_temp),
                               description=weatherinfo['today_nowcard-phrase'])

        return [td_forecast]

    def _five_and_ten_days_forecast(self, args):
        raise NotImplementedError()

    def _weekend_forecast(self, args):
        raise NotImplementedError()

    def run(self, args):
        self._forecast_type = args.forecast_option
        forecast_function = self._forecast[args.forecast_option]
        return forecast_function(args)

Answer 1

查看调用堆栈，在我看来weatherterm / core / request.py中的Request类有问题。 Request类的初始化程序应如下所示：

class Request:
    def __init__(self, base_url):
        ...

确保初始值设定项还获得base_url参数。

TypeError：object（）不带参数 - Python 3.6.3

1 个答案: