我正在使用th命令从我的
Linux shell执行Torch脚本.这个Torch脚本有两个输入参数:
th torch_script.lua input_parameter1 input_parameter2
现在我想通过Torch shell运行这个脚本.为此,我必须使用dofile命令.但在这种情况下,我不知道如何传递输入参数input_parameter1和input_parameter2.
在Torch中,如何将一些输入参数传递给dofile执行命令?
编辑:这是我正在尝试运行的代码.我无法正常运行,也许你可以告诉我原因
external_command.lua内容:
- local arg = arg or {...}
- input_parameter = arg[1]
- print("input_parameter ".. input_parameter);
在shell上:
- $th
- th> tempFunc = load "external_command.lua"
- th> tempFunc("try")
- [string "_RESULT={tempFunc("try")}"]:1: attempt to call global 'tempFunc' (a nil value)
- stack traceback:
- [string "_RESULT={tempFunc("try")}"]:1: in main chunk
- [C]: in function 'xpcall'
- /home/davide/torch/install/share/lua/5.1/trepl/init.lua:630: in function 'repl'
- ...vide/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:185: in main chunk
- [C]: at 0x004064d0
编辑2:我尝试了TonyHsu发布的解决方案,但无论如何它都无法正常工作.
这就是我正在做的事情.
我在名为runfile.lua的脚本中定义了一个函数runfile(),其中包含以下代码:
- function runfile(scriptName,input)
- opt = nil
- arg = input
- dofile(scriptName)
- end
然后我使用我之前为此函数定义为scriptName输入参数的external_command.lua脚本:
- th> scriptName = "external_command.lua"
- th> require './runfile.lua'
- th> runfile(scriptName,"Hello world");
不幸的是,在这种情况下,我收到一个错误:
- external_command.lua:4: attempt to concatenate global 'input_parameter' (a nil value)
- stack traceback:
- external_command.lua:4: in main chunk
- [C]: in function 'dofile'
- /home/davide/torch/temp/runfile.lua:4: in function 'runfile'
- [string "runfile(scriptName,"Hello world");"]:1: in main chunk
- [C]: in function 'xpcall'
- /home/davide/torch/install/share/lua/5.1/trepl/init.lua:648: in function 'repl'
- ...vide/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:185: in main chunk
- [C]: at 0x004064d0
我认为诀窍是传递全局变量’args’中的参数.说,我在external_command.lua中有以下内容.
- -- args has been set by the caller
- if not args or #args == 0 then
- print('no input_parameter')
- else
- print('#args = ' .. #args,'input_parameter: ' .. args[1])
- end
然后按如下方式定义runfile().
- function runfile(f,...)
- local tmp = args -- save the original global args
- args = table.pack(...)
- dofile(f)
- args = tmp -- restore args
- end
我已经测试了它.看起来像这样.
- th> runfile('ext_command.lua',10)
- #args = 1 input_parameter: 10
- [0.0002s]
- th> runfile('ext_command.lua','a','b','c')
- #args = 3 input_parameter: a
- [0.0002s]