Python-сообщество

import re
mas={}
for string  in open(raw_input('Введите имя файла: '),'r'):
    words=re.split('\W+|[0-9]|_|',string)
    for word in words:
        word = word.lower()
        if mas.has_key(word):
            mas[word]+=1
        else:
            mas[word]=1
f=open('c:\output.txt','w')
for key in sorted(mas.iterkeys()):
    string=key+' '+str(mas[key])+"\n"
    f.write(string)
print "Done"

class m1(models.Model):
    m2s = models.ManyToManyField(m2)
    
    
    def get_m2s(self):
        from django.db import connection
        cursor = connection.cursor()
        cursor.execute("SELECT m2_id FROM main_m1_m2s where m1_id = %s", [self.id])
        rows = cursor.fetchall()
        ids = []
        for row in rows:
            ids.append(str(row[0]))
     
        return m2.objects.filter(id__in = ids)

import numpy.linalg as linalg    

def find_closest_line(lines, point):
    ls = []
    for x in zip(lines, lines[1:]):
        n = (x[0][1]-x[1][1])*point[0]+(x[1][0]-x[0][0])*point[1]+ x[0][0]*x[1][1] - x[1][0]*x[0][1]
        ls.append(abs(n / linalg.norm(x)))
    return N.argmin(ls)

class BlobField(models.Field):
    __metaclass__ = models.SubfieldBase

    def db_type(self):
        return 'BLOB'

    def to_python(self, value):
        return value

    def get_db_prep_save(self, value):
        return value

conn = HTTPSConnection(server)
conn.request('POST',path,body,params)
response = conn.getresponse()
data = response.read()

class Photo(models.Model):
 
    content_type = models.ForeignKey(ContentType)
    object_id = models.PositiveIntegerField()
    object = generic.GenericForeignKey('content_type', 'object_id')
    image = models.ImageField(upload_to=get_upload_to, max_length=1024)   

class Common(models.Model):
       # Поля...
	photo = generic.GenericRelation(Photo)
	
class Class_common(Common):
       # Поля...

class Class_car(Class_common):
       # Поля...

Class_car.objects.get(pk=1).photo.all()

SELECT "media_photo"."id",
     "media_photo"."content_type_id",
     "media_photo"."object_id",
     "media_photo"."image", 
FROM "media_photo" 
WHERE ("media_photo"."object_id" = 1  AND "media_photo"."content_type_id" = 41 )

Class_car.objects.filter(photo__isnull=False)

SELECT DISTINCT T6."id",    
     "advert_class_car"."class_common_ptr_id",
FROM "advert_class_car"
INNER JOIN "advert_class_common" ON ("advert_class_car"."class_common_ptr_id" = "advert_class_common"."common_ptr_id")
INNER JOIN "common_common" ON ("advert_class_common"."common_ptr_id" = "common_common"."id")
INNER JOIN "media_photo" ON ("common_common"."id" = "media_photo"."object_id")
INNER JOIN "common_common" T6 ON ("advert_class_car"."class_common_ptr_id" = T6."id") 
WHERE ("media_photo"."id" IS NOT NULL AND "media_photo"."content_type_id" = 130 )