带参数运行python脚本 [英] Run a python script with arguments

问题描述

我要调用从C Python脚本，传递所需要的脚本一些参数。

我想使用的脚本mrsync，或多个远端同步。我得到这个命令行工作，通过调用：

 蟒蛇mrsync.py -m /tmp/targets.list -s / tmp目录/ sourcedata -t的/ tmp / targetdata
 

  

-m是含有靶IP位址列表。
  -s是包含要同步的文件的目录。
  -t是那里的文件将被放置在目标机器的目录。

到目前为止，我设法不带参数运行Python脚本，使用下面的C程序：

  Py_Initialize（）;
FILE *文件=的fopen（/ tmp目录/ myfile.py，R）;
PyRun_SimpleFile（文件/tmp/myfile.py）;
Py_Finalize（）;
 

这工作正常。但是，我找不到我怎么可以通过这些参数传递给 PyRun_SimpleFile（..）方法。

解决方案

好像你正在寻找使用Python开发的API从Python.h一个答案。下面是你应该工作的例子：

 ＃我叫mypy.py python脚本
进口SYS如果len（sys.argv中）= 2！
  sys.exit（没有足够的ARGS）
ca_one = STR（sys.argv中[1]）
ca_two = STR（sys.argv中[2]）打印命令我行参数是+ ca_one +和+ ca_two
 

和那么C code通过这些ARGS：

  //我的code文件
＃包括LT＆;＆stdio.h中GT;
＃包括LT＆; python2.7 / Python.h＆GT;无效的主要（）
{
    FILE *文件;
    INT ARGC;
    的char * argv的[3];    ARGC = 3;
    的argv [0] =mypy.py;
    ARGV [1] =-m;
    的argv [2] =/tmp/targets.list;    Py_SetProgramName（的argv [0]）;
    Py_Initialize（）;
    PySys_SetArgv（ARGC，ARGV）;
    文件= FOPEN（mypy.py，R）;
    PyRun_SimpleFile（文件mypy.py）;
    Py_Finalize（）;    返回;
}
 

如果你可以传递参数到C函数这一任务变得更加容易：

 无效的主要（INT ARGC，CHAR *的argv []）
{
    FILE *文件;    Py_SetProgramName（的argv [0]）;
    Py_Initialize（）;
    PySys_SetArgv（ARGC，ARGV）;
    文件= FOPEN（mypy.py，R）;
    PyRun_SimpleFile（文件mypy.py）;
    Py_Finalize（）;    返回;
}
 

您可以只通过这些直通。现在我的解决方案，只用2命令行参数的时间的缘故，但你可以使用，你需要通过所有6相同的概念......当然还有简洁的方式来捕捉蟒蛇侧ARGS太多，但这仅仅是基本的想法。

希望它帮助！

I want to call a Python script from C, passing some arguments that are needed in the script.

The script I want to use is mrsync, or multicast remote sync. I got this working from command line, by calling:

python mrsync.py -m /tmp/targets.list -s /tmp/sourcedata -t /tmp/targetdata

-m is the list containing the target ip-addresses. -s is the directory that contains the files to be synced. -t is the directory on the target machines where the files will be put.

So far I managed to run a Python script without parameters, by using the following C program:

Py_Initialize();
FILE* file = fopen("/tmp/myfile.py", "r");
PyRun_SimpleFile(file, "/tmp/myfile.py");
Py_Finalize();

This works fine. However, I can't find how I can pass these argument to the PyRun_SimpleFile(..) method.

解决方案

Seems like you're looking for an answer using the python development APIs from Python.h. Here's an example for you that should work:

#My python script called mypy.py
import sys

if len(sys.argv) != 2:
  sys.exit("Not enough args")
ca_one = str(sys.argv[1])
ca_two = str(sys.argv[2])

print "My command line args are " + ca_one + " and " + ca_two

And then the C code to pass these args:

//My code file
#include <stdio.h>
#include <python2.7/Python.h>

void main()
{
    FILE* file;
    int argc;
    char * argv[3];

    argc = 3;
    argv[0] = "mypy.py";
    argv[1] = "-m";
    argv[2] = "/tmp/targets.list";

    Py_SetProgramName(argv[0]);
    Py_Initialize();
    PySys_SetArgv(argc, argv);
    file = fopen("mypy.py","r");
    PyRun_SimpleFile(file, "mypy.py");
    Py_Finalize();

    return;
}

If you can pass the arguments into your C function this task becomes even easier:

void main(int argc, char *argv[])
{
    FILE* file;

    Py_SetProgramName(argv[0]);
    Py_Initialize();
    PySys_SetArgv(argc, argv);
    file = fopen("mypy.py","r");
    PyRun_SimpleFile(file, "mypy.py");
    Py_Finalize();

    return;
}

You can just pass those straight through. Now my solutions only used 2 command line args for the sake of time, but you can use the same concept for all 6 that you need to pass... and of course there's cleaner ways to capture the args on the python side too, but that's just the basic idea.

Hope it helps!

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