setting justOne limiter for pymongo remove throws TypeError

Question

On python 2.7.3, pymongo 2.7

I am trying to set the justOne safety limiter when removing docs from a pymongo collection.

ufo.users points to a valid preinitialized collection

>>> type(ufo.users)
<class 'pymongo.collection.Collection'>    

>>> ufo.users.remove({'emails.address': 'foo@bar.com'}, {'justOne': True})                                                                                                            
Traceback (most recent call last):                                                                                                                                                    
  File "<stdin>", line 1, in <module>                                                                                                                                                 
  File "/home/action/.local/lib/python2.7/site-packages/pymongo/collection.py", line 645, in remove                                                                                   
    safe, options = self._get_write_mode(safe, **kwargs)                                                                                                                              
  File "/home/action/.local/lib/python2.7/site-packages/pymongo/common.py", line 693, in _get_write_mode                                                                              
    validate_boolean('safe', safe)                                                                                                                                                    
  File "/home/action/.local/lib/python2.7/site-packages/pymongo/common.py", line 75, in validate_boolean                                                                              
    raise TypeError("Wrong type for %s, value must be a boolean" % (option,))                                                                                                         
TypeError: Wrong type for safe, value must be a boolean

Setting the justOne value to 'True','true', 1, or '1' all provide that same error message.

Looking at my the local cache of packages, I found the function in pymongo/common.py that is supposed to do validation:

def validate_boolean(option, value):                                                                                                                                                  
    """Validates that 'value' is 'true' or 'false'.                                                                                                                                   
    """                                                                                                                                                                               
    if isinstance(value, bool):                                                                                                                                                       
        return value                                                                                                                                                                  
    elif isinstance(value, basestring):                                                                                                                                               
        if value not in ('true', 'false'):                                                                                                                                            
            raise ConfigurationError("The value of %s must be "                                                                                                                       
                                     "'true' or 'false'" % (option,))                                                                                                                 
        return value == 'true'                                                                                                                                                        
    raise TypeError("Wrong type for %s, value must be a boolean" % (option,))                                                                                                         

And... I don't get it. I tried passing 'true' and True....

Is this a bug in the package?

What do I need to do to set the justOne option correctly?

Answer 1

Under pymongo the argument is a little different, as in the documentation

ufo.users.remove({'emails.address': 'foo@bar.com'}, safe=True)

And that should do the trick