Python天气API调用问题

我目前正在学习python，并在我的教导中到达了一节的结尾，所以我想我会尝试使用迄今为止学到的内容来构建一些基本项目。Python天气API调用问题

我发现的git这个文件，我想我会重新创建它，并稍作修改，以允许用户输入，使他们能够调整自己的城市/位置

然而，当我运行该脚本，我得到一个错误。请参阅下面的代码和下面的错误。我不知道是应该把整个错误放在这里，还是只放在最后一行，所以我认为我会在安全方面犯错，并把它放在一边。很抱歉，如果它真的很长和令人讨厌。

import urllib 
import json 

previous_weather_file = "weather_log.txt" 
previous_weather = "" 

try: 
    log = open(previous_weather_file, "r") 
    previous_weather = log.read() 
    log.close() 
except: 
    print "No previous data" 

city_name = raw_input("What is the city name you would like to check the weather for? ") 

f = urllib.urlopen("api.openweathermap.org/data/2.5/weather?q={city_name}") 
weather = f.read() 

log = open(previous_weather_file, "w") 
log.write(weather) 
log.close() 

weather_json = json.load(weather) 
#print weather 
#print weather_json['weather'] 
curr_temp = float(weather_json['main']['temp']) - 273.13 
print "Temperature is %.2f degrees C" % (curr_temp) 

if (not previous_weather == ""): 
    previous_weather_json = json.load(previous_weather) 
    prev_temp = float(previous_weather_json['main']['temp']) - 273.13 
    temp_diff = curr_temp - prev_temp 

    if not (temp_diff == 0.0): 
     print "Temperature has changed by: %.2f degrees C" % (temp_diff) 


#error message 
Serxhios-MBP:Projects SerxhioZefi$ python weather_get.py 
What is the city name you would like to check the weather for? London 
Traceback (most recent call last): 
    File "weather_get.py", line 16, in <module> 
    f = urllib.urlopen("api.openweathermap.org/data/2.5/weather?q={city_name}") 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib.py", line 87, in urlopen 
    return opener.open(url) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib.py", line 213, in open 
    return getattr(self, name)(url) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib.py", line 469, in open_file 
    return self.open_local_file(url) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib.py", line 483, in open_local_file 
    raise IOError(e.errno, e.strerror, e.filename) 
IOError: [Errno 2] No such file or directory: 'api.openweathermap.org/data/2.5/weather?q={city_name}'

来源

2016-12-15 sergio

行更改16本（你缺少的API HTTP或HTTPS）

f = urllib.urlopen("http://api.openweathermap.org/data/2.5/weather?q={city_name}")

接下来你会遇到('http error', 401, 'Unauthorized', <httplib.HTTPMessage instance at 0x104827a70>)但那是另一个问题，具有与该做的openweathermap API。我会检查他们的文档的API使用情况。可能您需要在请求中包含身份验证密钥。

我建议requests模块对于这种类型的python的工作，主要是因为它是愉快的使用，简化了许多任务：

http://docs.python-requests.org/en/master/

来源

2016-12-15 16:31:26

Python天气API调用问题

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