Python 类型错误：int() 参数必须是字符串、类似字节的对象或数字，而不是“列表”
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TypeError: int() argument must be a string, a bytes-like object or a number, not 'list'
提问by Urdro
I having trouble passing a function as a parameter to another function. This is my code:
我无法将函数作为参数传递给另一个函数。这是我的代码：
ga.py:
ga.py:
def display_pageviews(hostname):
pageviews_results = get_pageviews_query(service, hostname).execute()
if pageviews_results.get('rows', []):
pv = pageviews_results.get('rows')
return pv[0]
else:
return None
def get_pageviews_query(service, hostname):
return service.data().ga().get(
ids=VIEW_ID,
start_date='7daysAgo',
end_date='today',
metrics='ga:pageviews',
sort='-ga:pageviews',
filters='ga:hostname==%s' % hostname,)
models.py:
模型.py：
class Stats(models.Model):
user = models.OneToOneField('auth.User')
views = models.IntegerField()
visits = models.IntegerField()
unique_visits = models.IntegerField()
updatestats.py:
更新统计.py：
class Command(BaseCommand):
def handle(self, *args, **options):
users = User.objects.all()
try:
for user in users:
hostname = '%s.%s' % (user.username, settings.NETWORK_DOMAIN)
stats = Stats.objects.update_or_create(
user=user,
views=display_pageviews(hostname),
visits=display_visits(hostname),
unique_visits=display_unique_visits(hostname),)
except FieldError:
print ('There was a field error.')
When I run this: python manage.py updatestatsI get the error:
当我运行这个时：python manage.py updatestats我收到错误：
TypeError: int() argument must be a string, a bytes-like object or a number, not 'list'
类型错误：int() 参数必须是字符串、类似字节的对象或数字，而不是“列表”
I don't know what's causing this. I've tried converting it to a string, but I get the same error. Any ideas?
我不知道是什么原因造成的。我尝试将其转换为字符串，但出现相同的错误。有任何想法吗？
Full traceback:
完整追溯：
Traceback (most recent call last):
File "manage.py", line 20, in <module>
execute_from_command_line(sys.argv)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/core/management/__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/Users/myusername/project/Dev/project_files/project/main/management/commands/updatestats.py", line 23, in handle
unique_visits=display_unique_visits(hostname),)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/manager.py", line 122, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/query.py", line 480, in update_or_create
obj = self.get(**lookup)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/query.py", line 378, in get
clone = self.filter(*args, **kwargs)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/query.py", line 790, in filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/query.py", line 808, in _filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1243, in add_q
clause, _ = self._add_q(q_object, self.used_aliases)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1269, in _add_q
allow_joins=allow_joins, split_subq=split_subq,
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1203, in build_filter
condition = self.build_lookup(lookups, col, value)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/sql/query.py", line 1099, in build_lookup
return final_lookup(lhs, rhs)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/lookups.py", line 19, in __init__
self.rhs = self.get_prep_lookup()
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/lookups.py", line 57, in get_prep_lookup
return self.lhs.output_field.get_prep_lookup(self.lookup_name, self.rhs)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 1860, in get_prep_lookup
return super(IntegerField, self).get_prep_lookup(lookup_type, value)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 744, in get_prep_lookup
return self.get_prep_value(value)
File "/Users/myusername/project/Dev/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 1854, in get_prep_value
return int(value)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'list'
Edit:
编辑：
Alright, I understand what the issue is. I used the shell to get the type of function output:
好的，我明白是什么问题了。我使用shell来获取函数输出的类型：
>>> type(display_pageviews('test.domain.com'))
<class 'list'>
I tried with this but it is still considered as a list:
我试过这个，但它仍然被认为是一个列表：
pv = pageviews_results.get('rows')[0]
return pv
采纳答案by Christian Dean
What the error is telling, is that you can't convert an entire list into an integer. You could get an index from the list and convert that into an integer:
错误说明的是，您无法将整个列表转换为整数。您可以从列表中获取索引并将其转换为整数：
x = ["0", "1", "2"]
y = int(x[0]) #accessing the zeroth element
If you're trying to convert a whole list into an integer, you are going to have to convert the list into a string first:
如果您尝试将整个列表转换为整数，则必须先将列表转换为字符串：
x = ["0", "1", "2"]
y = ''.join(x) # converting list into string
z = int(y)
If your list elements are not strings, you'll have to convert them to strings before using str.join:
如果您的列表元素不是字符串，则必须在使用之前将它们转换为字符串str.join：
x = [0, 1, 2]
y = ''.join(map(str, x))
z = int(y)
Also, as stated above, make sure that you're not returning a nested list.
此外，如上所述，请确保您没有返回嵌套列表。
