python - 无法将参数从 ant build.xml 文件传递​​给 pythonscript。我怎样才能传递值？

Question

我在运行 build.xml 文件时尝试从我的 ant build.xml 文件运行 python 程序，但我无法将参数传递给 python 脚本

检查给定数字的阶乘的 Python 程序:

事实.py

#!/usr/bin/python

def factorial(num):
    if num == 1:
        return num
    else:
        return num * factorial(num - 1)

 num = int(input('Enter a Number: '))
 if num < 0:
     print 'Factorial cannot be found for negative numbers'
 elif num == 0:
     print 'Factorial of 0 is 1'
 else:
     print ('Factorial of', num, 'is: ', factorial(num))

build.xml 文件如下所示:

<project name="ant_test" default="python" basedir=".">
<target name="python" >
        
        <exec dir="D:\app\python" executable="D:\app\python\python.exe" failonerror="true">
            <arg line="D:\app\ant-workout\fact.py/>
        </exec>
</target>

当运行 build.xml 文件时，它会运行 fact.py python 程序，并且它期望用户输入来检查给定数字的阶乘。

如何将数字从 ant build.xml 文件传递​​给 python 程序

提前致谢!!!!!!

Answer 1

根据documentation

Note that you cannot interact with the forked program, the only way to send input to it is via the input and inputstring attributes. Also note that since Ant 1.6, any attempt to read input in the forked program will receive an EOF (-1). This is a change from Ant 1.5, where such an attempt would block.
(emphasis mine)

那你能做什么？提供以下之一:

input
A file from which the executed command's standard input is taken. This attribute is mutually exclusive with the inputstring attribute.

inputstring
A string which serves as the input stream for the executed command. This attribute is mutually exclusive with the input attribute.

---

例子:

<project name="ant_test" default="python" basedir=".">
<target name="python" >
        
        <exec dir="D:\app\python" executable="D:\app\python\python.exe" 
                                  failonerror="true" 
                                  inputstring="42">
            <arg line="D:\app\ant-workout\fact.py/>
        </exec>
</target>