我正在生成一个csv文件,并且在我的数据库的某些字段中是空的,当我创建csv文件时,此错误显示"必须是unicode,而不是None"
这就是我在做什么
def encode_notnull(field):
if field:
field.encode("utf-8")
return field
clients = Usuario.objects.all()
for client in clients:
row = [
client.casillero,
client.pk,
encode_notnull(client.tipo_rif),
encode_notnull(client.rif),
encode_notnull(client.razon_social),
'',
client.fecha_registro,
encode_notnull(client.direccion_fiscal),
client.codigo_telf_empresa,
client.telf_empresa,
client.codigo_fax_empresa,
client.fax_empresa,
client.correo_empresa,
client.web,
client.tipo_cedula,
client.cedula,
encode_notnull(normalize('NFKD', client.user.last_name).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.user.first_name).encode('ascii', 'ignore')),
client.fecha_nacimiento,
encode_notnull(normalize('NFKD', client.profesion).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.pais).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.estado).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.ciudad).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.urbanizacion).encode('ascii', 'ignore')),
client.codigo_postal,
encode_notnull(normalize('NFKD', client.avenida).encode('ascii', 'ignore')),
client.codigo_telefono,
client.telefono,
encode_notnull(normalize('NFKD', client.tipo_inmueble).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.inmueble).encode('ascii', 'ignore')),
client.codigo_celular,
client.celular,
client.codigo_fax,
client.fax,
encode_notnull(normalize('NFKD', client.user.email).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.user.username).encode('ascii', 'ignore')),
encode_notnull(normalize('NFKD', client.user.password).encode('ascii', 'ignore')),
encode_notnull(client.status),
encode_notnull(client.tipo_cliente),
client.autorizado,
client.jet_info,
encode_notnull(client.observaciones),
encode_notnull(client.codigo_empresa),
encode_notnull(client.cargo),
encode_notnull(client.sexo),
encode_notnull(client.departamento),
client.celular,#decia cedularl ???
'',
'',
'',
encode_notnull(client.tomo),
client.ano,
client.representante_legal,
encode_notnull(client.plan_inscripcion),
client.numero_afiliado,
encode_notnull(client.referido),
''
]
writer.writerow(row)
我该怎么办?我尝试检查值是否为无并返回" value =" none" "但是它显示了这个错误,"必须是unicode而不是str" 回溯:
环境:
请求方法:GET请求URL: http://127.0.0.1:8000/admin/descargar_clientes
Django版本:1.7.1 Python版本:2.7.6已安装的应用程序: (' django.contrib.admin.apps.SimpleAdminConfig&#39 ;, ' django.contrib.auth',' django.contrib.contenttypes', ' django.contrib.sessions',' django.contrib.messages', ' django.contrib.staticfiles',' adminplus',' clients',' currier') 已安装的中间件: (' django.contrib.sessions.middleware.SessionMiddleware&#39 ;, ' django.middleware.common.CommonMiddleware&#39 ;, ' django.middleware.csrf.CsrfViewMiddleware&#39 ;, ' django.contrib.auth.middleware.AuthenticationMiddleware&#39 ;, ' django.contrib.auth.middleware.SessionAuthenticationMiddleware&#39 ;, ' django.contrib.messages.middleware.MessageMiddleware&#39 ;, ' django.middleware.clickjacking.XFrameOptionsMiddleware&#39)
回溯:文件 " /home/eloy/jet_dev/local/lib/python2.7/site-packages/django/core/handlers/base.py" 在get_response中 111. response = wrapped_callback(request,* callback_args,** callback_kwargs)File" /home/eloy/jet_dev/local/lib/python2.7/site-packages/django/utils/decorators.py" 在_wrapped_view中 105. response = view_func(request,* args,** kwargs)File" /home/eloy/jet_dev/local/lib/python2.7/site-packages/django/views/decorators/cache.py" ; 在_wrapped_view_func中 52. response = view_func(request,* args,** kwargs)File" /home/eloy/jet_dev/local/lib/python2.7/site-packages/django/contrib/admin/sites.py" ; 在内心 204. return view(request,* args,** kwargs)File" /home/eloy/jet/currier/admin.py"在descargar_clientes 126. encode_notnull(normalize(' NFKD',client.profesion).encode(' ascii',' ignore'))或"" ,
异常类型:/ admin / descargar_clientes异常时的TypeError 值:必须是unicode,而不是None
答案 0 :(得分:4)
你的作者只期待字符串,你明显发送了None
,这就是问题的原因。
要覆盖此内容,请更改
client.celular #for example, assuming this is the line the error occurs
到
client.celular or ""
这样,如果client.celular
评估为None
,则writerow
收到的值为""
,仍为字符串。或u""
如果你想让它成为unicode。