Django＆Suds：使用QuerySets時的UnicodeEncodeError

Question

與Python的Unicode問題一樣，任何Python開發人員現在都已經搞亂了很多年。 但是現在我遇到了一個讓我瘋狂的情況，我無法自己解決這個問題。 它已經要1天，現在，包括RECHERCHES ..

我的設置是一個小的Django應用程序，通過SOAP連接到遠程系統（使用肥皂水），拉一些數據和Django的數據庫中尋找它：

from myapp.models import Customer 
client = suds.client.Client(...) 
customer = client.service.getCustomerByEmail('foo@bar.com') 

type(customer.email): <class 'suds.sax.text.Text'> 

customer_exists = Customer.objects.filter(email=customer.email) 

現在客戶的電子郵件地址有一個德國元音ü，它可以讓Django的拋出異常如下：

Traceback (most recent call last): 
    File "run_anatomy_client.py", line 19, in <module> 
    print client.main() 
    File "/Users/user/Documents/workspace/Wawi/application/myapp/client.py", line 282, in main 
    if not Customer.objects.filter(email=customer.email.encode('latin1')): 
    File "/Users/user/Documents/workspace/Wawi/application/myapp/client.py", line 76, in sync_customer 
    if not customer_exists: 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/query.py", line 113, in __nonzero__ 
    iter(self).next() 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/query.py", line 107, in _result_iter 
    self._fill_cache() 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/query.py", line 772, in _fill_cache 
    self._result_cache.append(self._iter.next()) 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/query.py", line 273, in iterator 
    for row in compiler.results_iter(): 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter 
    for rows in self.execute_sql(MULTI): 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql 
    cursor.execute(sql, params) 
    File "/Users/user/Documents/workspace/Wawi/pyenv/lib/python2.7/site-packages/django/db/backends/util.py", line 43, in execute 
    logger.debug('(%.3f) %s; args=%s' % (duration, sql, params), 
UnicodeEncodeError: 'ascii' codec can't encode character u'\xfc' in position 28: ordinal not in range(128) 

我已經與編碼（），解碼（）出場，改變了源文件的編碼以及數據庫l ayout，目前看起來如下： - ：

mysql> show variables like '%character%'; 
+--------------------------+-----------------------------------------+ 
| Variable_name   | Value         | 
+--------------------------+-----------------------------------------+ 
| character_set_client  | latin1         | 
| character_set_connection | latin1         | 
| character_set_database | utf8         | 
| character_set_filesystem | binary         | 
| character_set_results | latin1         | 
| character_set_server  | latin1         | 
| character_set_system  | utf8         | 
| character_sets_dir  | /opt/local/share/mysql5/mysql/charsets/ | 
+--------------------------+-----------------------------------------+ 
8 rows in set (0.00 sec) 

奇怪的是，如果我設置一個跟蹤點和執行Django的外殼相同的一行，然後用編碼（）時工作得很好

(Pdb) Customer.objects.filter(email=customer.email) 
*** UnicodeEncodeError: 'ascii' codec can't encode character u'\xfc' in position 28:  ordinal not in range(128) 
(Pdb) Customer.objects.filter(email=customer.email.encode('utf-8')) 
[] 

我很感謝任何提示..

Answer 1

suds.sax.text.Text從Unicode繼承

class Text(unicode): 
    """ 
    An XML text object used to represent text content. 
    @ivar lang: The (optional) language flag. 
    @type lang: bool 
    @ivar escaped: The (optional) XML special character escaped flag. 
    @type escaped: bool 
    """ 

如果你想使用，你可以編碼爲UTF-8。

email = customer.email.encode("utf-8") 
customer_exists = Customer.objects.filter(email=email) 

Answer 2

我花了2個多小時試圖弄清楚是怎麼回事，爲什麼我不能保存的Django的對象的字段分配從肥皂水數據結構值之後的對象。

由於@guillaumevincent提到Suds Text類是從unicode繼承而來的，並且實現不是100％正確的，所以Django在嘗試執行一些操作後失敗，這些操作將與基本unicode類型一起工作。

所以從問題的例子，我會做

customer_exists = Customer.objects.filter(email=unicode(customer.email))

而在我的情況下，我做了同樣

django_obj.field_name = suds_obj.field_name

希望這將節省一些時間的人:)