[英]AssertionError when threading in Python
I'm trying to run some simple threading in Python using: 我正在尝试使用Python运行一些简单的线程:
t1 = threading.Thread(analysis("samplequery"))
t1.start()
other code runs in here
t1.join()
Unforunately I'm getting the error: 不幸的是我收到了错误:
"AssertionError: group argument must be none for now" “AssertionError:group参数现在必须为none”
I've never implemented threading in Python before, so I'm a bit unsure as to what's going wrong. 我之前从未在Python中实现过线程,所以我有点不确定出了什么问题。 Does anyone have any idea what the problem is? 有谁知道问题是什么?
I'm not sure if it's relevant at all, but analysis is a method imported from another file. 我不确定它是否相关,但分析是从另一个文件导入的方法。
I had one follow up query as well. 我也有一个跟进查询。 Analysis returns a dictionary, how would I go about assigning that for use in the original method? Analysis返回一个字典,我将如何分配在原始方法中使用?
Thanks 谢谢
You want to specify the target
keyword parameter instead: 您想要指定target
关键字参数:
t1 = threading.Thread(target=analysis("samplequery"))
You probably meant to make analysis
the run target, but 'samplequery
the argument when started : 您可能打算对运行目标进行analysis
,但是'samplequery
在启动时 'samplequery
参数:
t1 = threading.Thread(target=analysis, args=("samplequery",))
The first parameter to Thread()
is the group
argument, and it currently only accepts None
as the argument. Thread()
的第一个参数是group
参数,它当前只接受None
作为参数。
From the threading.Thread()
documentation : 从threading.Thread()
文档 :
This constructor should always be called with keyword arguments. 应始终使用关键字参数调用此构造函数。 Arguments are: 参数是:
- group should be
None
; 组应为None
; reserved for future extension when aThreadGroup
class is implemented. 在实现ThreadGroup
类时保留用于将来的扩展。- target is the callable object to be invoked by the
run()
method. target是run()
方法调用的可调用对象。 Defaults toNone
, meaning nothing is called. 默认为None
,表示不调用任何内容。
您需要提供target
属性:
t1 = threading.Thread(target = analysis, args = ('samplequery',))
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