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<p>再见,我真的不明白我在这里做错了什么。我使用这个函数基视图在django模型的数据库中存储我的废料数据,但是现在它不再保存了。我真不明白为什么。有什么想法吗?在</p>
<pre><code>def weather_fetch(request):
context = None
corrected_rainChance = None
url = 'http://weather.news24.com/sa/cape-town'
extracted_city = url.split('/')[-1]
city = extracted_city.replace('-', " ")
print(city)
url_request = urlopen(url)
soup = BeautifulSoup(url_request.read(), 'html.parser')
city_list = soup.find(id="ctl00_WeatherContentHolder_ddlCity")
city_as_on_website = city_list.find(text=re.compile(city, re.I)).parent
cityId = city_as_on_website['value']
json_url = "http://weather.news24.com/ajaxpro/TwentyFour.Weather.Web.Ajax,App_Code.ashx"
headers = {
'Content-Type': 'text/plain; charset=UTF-8',
'Host': 'weather.news24.com',
'Origin': 'http://weather.news24.com',
'Referer': url,
'User-Agent': 'Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/48.0.2564.82 Chrome/48.0.2564.82 Safari/537.36',
'X-AjaxPro-Method': 'GetCurrentOne'}
payload = {
"cityId": cityId
}
request_post = requests.post(json_url, headers=headers, data=json.dumps(payload))
data = re.sub(r"new Date\(Date\.UTC\((\d+),(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)\)\)", convert_date, request_post.text)
data = data.strip(";/*")
data = json.loads(data)
forecast = data['Forecast']
if forecast["Rainfall"] == '*':
rainChance = 0
corrected_rainChance = rainChance
else:
try:
obj = WeatherData.objects.get_or_create(
min_temp=forecast["LowTemp"], high_temp=forecast["HighTemp"],
date=forecast["Date"], wind_speed=forecast["WindSpeed"], rain=corrected_rainChance
)
except WeatherData.DoesNotExist:
obj = WeatherData.objects.get_or_create(
min_temp=forecast["LowTemp"], high_temp=forecast["HighTemp"],
date=forecast["Date"], wind_speed=forecast["WindSpeed"],
rain=corrected_rainChance
)
obj.save()
context = {'context': obj}
print(context)
return render(request, 'forecastApp/pages/fetch_weather.html', context)
class WeatherData(models.Model):
date = models.DateTimeField(default=timezone.now)
wind_speed = models.DecimalField(max_digits=3, decimal_places=1)
high_temp = models.DecimalField(max_digits=3, decimal_places=1)
min_temp = models.DecimalField(max_digits=3, decimal_places=1)
rain = models.IntegerField(default=0)
def __str__(self):
return ' '.join(str([self.date.month, self.date.day, self.date.year]))
</code></pre>