Python：运行外部命令时传递参数

Question

I am calling an external program like this

call(["./myProgram", myArgs])

How can I pass a list of arguments? myProgram takes 3 parameters like this

myProgram param1 param2 param3

specifiying arguments seperately like below works

call(["./myProgram", param1 ,param2, param3])

, but how can I use a list/array of arguments, like

myArgs=[param1,param2,param3]

I am getting this

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/subprocess.py", line 493, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.7/subprocess.py", line 679, in __init__errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
raise child_exception TypeError: execv() arg 2 must contain only strings

Answer 1

Just concatenate the lists:

call(['./myProgram'] + myArgs)

The first argument must be a list of strings; simply build that list from two separate lists.