使用参数从终端运行Jython脚本 [英] Running Jython script from terminal with parameter

问题描述

我想从命令行p.e.调用Jython脚本. $ /Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless little_jython_script.py

I want to invoke Jython scripts from command line, p.e. $ /Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless little_jython_script.py

我知道Python的(因此是Jython的)通过以下方式获取参数的功能

I know about Python's (and therefore Jython's) capability to take parameters by

import sys
params = sys.argv[1:]

，然后用类似的方法调用脚本 $ /Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless jython_script_with_params.py param1 param2 param3.

and then calling the script with something like $ /Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless jython_script_with_params.py param1 param2 param3.

但是，根据ImageJ网页 http://imagej.net/Script_parameters ，这也是可能的在Jython中编码参数的用法，类似于该网站上的Greeting.py示例

However, according to to the ImageJ webpage http://imagej.net/Script_parameters it is also possible to code the use of parameters in Jython similar to the Greeting.py example from that website

# @String name

# A Jython script with parameters.
# It is the duty of the scripting framework to harvest
# the 'name' parameter from the user, and then display
# the 'greeting' output parameter, based on its type.

print "Hello, " + name + "!" 

问题是:如何在命令行调用$/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless Helloworld.py中指定参数name?

The questions is: How do I specify the parameter name in a command line call $/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless Helloworld.py ?

推荐答案

可用参数的方式取决于调用命令，区别在于Jython方式中的附加标志--ij2和--run. sys.argv或# @String等都可以工作，但不能同时工作

The way parameters are available depends on the calling command, where the difference is the additional flags --ij2 and --run in the Jython way. Either sys.argv or # @String etc. work, but not both at the same time

1. sys.argv的经典Python方式

$/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --headless JythonScript.py param1 param2

使用sys.argv，以经典的python方式获取JythonScript.py的参数，即

harvests the parameters for JythonScript.py in the classical python way with sys.argv , i.e.

# @String param1     ### Does NOT work

import sys
program_name = sys.argv[0]
paramvalue1  = sys.argv[1]
paramvalue2  = sys.argv[2]

2. Jython特定于#@String等的方式.

$/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --ij2 --headless --run JythonScript_2.py 'param1=value, param2=value'

以Jython方式获取参数

takes parameters in the Jython way

# @String param1     
# @Long param2

### See http://imagej.net/Script_parameters#Parameter_types 
### for a complete list of parameter types

import sys
check = sys.argv   
#here check is a length 1 list containing en empty string: check ==['']

请注意两个逗号分隔的param=value对周围的引号.单引号和双引号均适用.当仅存在一个参数时，可以将其省略.对于字符串参数，请确保将其括在其他类型的引号中，或者在字符串为纯字母数字形式(例如)时省略引号 $/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --ij2 --headless --run JythonScript_3.py 'stringparam1="string with ',' and space ", stringparam2=abc123'

Note the quotes around the two comma-separated param=value pairs. Both single and double quotes work. They can be omitted when only 1 parameter is present. For string parameters make sure to enclose them into the other kind of quotes, or omit the quotes when the string is purely alphanumeric like $/Applications/Fiji.app/Contents/MacOS/ImageJ-macosx --ij2 --headless --run JythonScript_3.py 'stringparam1="string with ',' and space ", stringparam2=abc123'

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