Question

我想用Python执行外部编译程序。在shell中，

./bin/myProgram ./dir1/arg1 ./dir/arg2 arg3 arg3 arg4

我的Python脚本如下：

import subprocess
subprocess.call(["./Users/Solar/Desktop/parent/child1/child2/bin/myProgram",
                 "/Users/Solar/Desktop/parent/child1/child2/dir1/arg1",
                 "/Users/Solar/Desktop/parent/child1/child2/dir1/arg2",
                 "arg3", "arg4", "arg5"])

但是我收到了这个错误：

Traceback (most recent call last):
  File "/Users/Solar/Desktop/test.py", line 5, in <module>
    "32", "0.06", "15"])
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 522, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Process finished with exit code 1

你可以帮帮我吗？提前谢谢!!

Answer 1

subprocess.Popen发布时

OSError: [Errno 2] No such file or directory

这只是因为找不到可执行文件（如果找不到其中一个文件参数，那么它就是报告错误的子进程，并且不会抛出异常）

在您的情况下，考虑到./Users/...有效（根据当前目录），/Users/可能无效，这就是您的问题。

"./Users/Solar/Desktop/parent/child1/child2/bin/myProgram"应为"/Users/Solar/Desktop/parent/child1/child2/bin/myProgram"

注意：更好的编码可以避免错误：

import subprocess
root = "/Users/Solar/Desktop/parent/child1/child2"
subprocess.call([os.path.join(root,"bin/myProgram"),
                 os.path.join(root,"dir1/arg1"),
                 os.path.join(root,"dir1/arg2"),
                 "arg3", "arg4", "arg5"])

Answer 2

它已经解决了，我只需要执行

Month month = Month.valueOf("January".toUpperCase());
System.out.println(month.getValue() + " : " + month);
// 1 : JANUARY

而不是

subprocess.call(["/Users/Solar/Desktop/parent/child1/child2/bin/myProgram",
                 "/Users/Solar/Desktop/parent/child1/child2/dir1/arg1",

...

谢谢大家!!

在Python中执行externall编译的程序

2 个答案: