HTTPError：HTTP錯誤400：錯誤的請求urllib2

Question

我是初學者到python。我是Easy APIs Project（http://gcdc2013-easyapisproject.appspot.com）的開發人員，正在使用我的項目對天氣API進行Python實現。訪問http://gcdc2013-easyapisproject.appspot.com/APIs_Doc.html查看天氣API。以下是我的實現，但它返回HTTPError: HTTP Error 400: Bad request錯誤。

import urllib2 

def celsius(a): 
    responsex = urllib2.urlopen('http://gcdc2013-easyapisproject.appspot.com/unitconversion?q='+a+' in celsius') 
    htmlx = responsex.read() 
    responsex.close() 
    htmlx = html[1:] #remove first { 
    htmlx = html[:-1] #remove last } 
    htmlx = html.split('}{') #split and put each resutls to array 
    return str(htmlx[1]); 

print "Enter a city name:", 
q = raw_input() #get word from user 
response = urllib2.urlopen('http://gcdc2013-easyapisproject.appspot.com/weather?q='+q) 
html = response.read() 
response.close() 
html = html[1:] #remove first { 
html = html[:-1] #remove last } 
html = html.split('}{') #split and put each resutls to array 
print "Today weather is " + html[1] 
print "Temperature is " + html[3] 
print "Temperature is " + celsius(html[3]) 

請幫助我..

Answer 1

查詢字符串應該使用urllib.quote或urllib.quote_plus被引用：

import urllib 
import urllib2 

def celsius(a): 
    responsex = urllib2.urlopen('http://gcdc2013-easyapisproject.appspot.com/unitconversion?q=' + urllib.quote(a + ' in celsius')) 
    html = responsex.read() 
    responsex.close() 
    html = html[1:] #remove first { 
    html = html[:-1] #remove last } 
    html = html.split('}{') #split and put each resutls to array 
    return html[0] 

print "Enter a city name:", 
q = raw_input() #get word from user 
response = urllib2.urlopen('http://gcdc2013-easyapisproject.appspot.com/weather?q='+urllib.quote(q)) 
html = response.read() 
print repr(html) 
response.close() 
html = html[1:] #remove first { 
html = html[:-1] #remove last } 
html = html.split('}{') #split and put each resutls to array 
print "Today weather is " + html[1] 
print "Temperature is " + html[3] 
print "Temperature is " + celsius(html[3].split()[0]) 

除此之外，我修改celsius使用html而不是htmlx。原碼混合使用html和htmlx。

Answer 2

我找到了答案。查詢應引用urllib2.quote(q)