python的thearding的arge参数误区-takes

python的thearding在执行并行的时候有几个误区需要注意，刚开始接触python所有有些无耐，特此记录，希望能对像我一样的小白有一点小小的作用
正文：
误区一：threading.Thread中target参数对应函数直接调用方法
错误代码

#!/usr/bin/env python3
import threading
def out_name(name):
    for i in range(5):
        print(name, ":", i)
def thread_test():
    tone = threading.Thread(target=out_name("123"))
    print("this first")
    ttwo = threading.Thread(target=out_name("456"))
    ttwo.start()
    tone.start()
if __name__ == "__main__":
    thread_test()

输出结果：

stb_py\process>theard.py
123 : 0
123 : 1
123 : 2
123 : 3
123 : 4
this first
456 : 0
456 : 1
456 : 2
456 : 3

这里并不是并行作用，而是因为你直接调用了out_name方法，所以还是串行直接调用函数的关系

误区二：arge参数中直接赋值，导致参数数目不对
错误代码

#!/usr/bin/env python3
import threading
def out_name(name):
    for i in range(5):
        print(name, ":", i)
def thread_test():
    tone = threading.Thread(target=out_name, args="123")
    print("this first")
    ttwo = threading.Thread(target=out_name, args="456")
    ttwo.start()
    tone.start()
if __name__ == "__main__":
    thread_test()

输出：

stb_py\process>theard.py
this first
Exception in thread Thread-2:
Traceback (most recent call last):
  File "E:\python\lib\threading.py", line 932, in _bootstrap_inner
Exception in thread Thread-1:
Traceback (most recent call last):
  File "E:\python\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "E:\python\lib\threading.py", line 870, in run
    self.run()
  File "E:\python\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
TypeError: out_name() takes 1 positional argument but 3 were given
    self._target(*self._args, **self._kwargs)
TypeError: out_name() takes 1 positional argument but 3 were given

正确调用方式：
参数使用元组,这样代表了一个参数，如果像二中示例那样，参数会默认为传入多个字符，导致参数数目不一致的问题。

#!/usr/bin/env python3
import threading

def out_name(name):
    for i in range(5):
        print(name, ":", i)

def thread_test():
    tone = threading.Thread(target=out_name, args=("123",))
    print("this first")
    ttwo = threading.Thread(target=out_name, args=("456",))
    ttwo.start()
    tone.start()

if __name__ == "__main__":
    thread_test()

输出结果：

stb_py\process>theard.py
this first
456 : 0
456 : 1
456 : 2
456 : 3
456 : 4
123 : 0
123 : 1
123 : 2
123 : 3
123 : 4