通过 python 文件传递​​给机器人框架的命令行参数

Question

语言：python - 3.7.3 机器人框架- 3.1.1 熟练程度：新手

我想从命令提示符将参数传递给 python 文件变量，然后想通过添加 python 文件作为变量来从机器人文件中打印相同的参数。

cmd (Variables) --> python file --> robot (print those variables) 

但显然这些尝试都没有产生预期的结果。任何指导都将受到高度赞赏。

注意： Robot 和 Python 文件都位于 pycharm IDE 中的同一目录下。

命令行：-

1st try: robot -d Report -V test.py Test_sample.robot|py test.py test@test.com test@123 QA1

2nd try: robot -d Report Test_sample.robot|py test.py test@test.com test@123 QA1

3rd try: robot -d Report --Variablefile py test.py Test_sample.robot|py test.py test@test.com test@123 QA1

4th try: robot -d Report -V | py test.py test@test.com test@123 QA1| Test_sample.robot

Python：-

import sys

username = str(sys.argv[1])
password = str(sys.argv[2])
environment = str(sys.argv[3])

机器人：-

*** Settings ***
Library     SeleniumLibrary
Library     Collections
Variables  test.py

*** Test Cases ***
Pass variables from Python File

        log to console  The usr is: "${username}"
        log to console  The pwd is: "${password}"
        log to console  The env is: "${environment}"

预期的：

usr 是：test@test.com pwd 是：test@123 env 是：QA1

实际的：

[ ERROR ] Unexpected error: OSError: [Errno 22] Invalid argument
Traceback (most recent call last):
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\utils\application.py", line 83, in _execute
    rc = self.main(arguments, **options)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\run.py", line 439, in main
    result = suite.run(settings)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\running\model.py", line 222, in run
    self.visit(runner)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\model\testsuite.py", line 168, in visit
    visitor.visit_suite(self)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\model\visitor.py", line 84, in visit_suite
    if self.start_suite(suite) is not False:
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\running\runner.py", line 83, in start_suite
    test_count=suite.test_count))
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\output.py", line 51, in start_suite
    LOGGER.start_suite(suite)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\logger.py", line 200, in start_suite
    logger.start_suite(suite)
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\console\verbose.py", line 35, in start_suite
    self._writer.suite_separator()
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\console\verbose.py", line 104, in suite_separator
    self._fill('=')
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\console\verbose.py", line 110, in _fill
    self._stdout.write('%s\n' % (char * self._width))
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\console\highlighting.py", line 53, in write
    self.flush()
  File "<<Dir path>>\python\python37-32\lib\site-packages\robot\output\console\highlighting.py", line 66, in flush
    self.stream.flush()
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='cp1252'>
OSError: [Errno 22] Invalid argument

Answer 1

您在评论中写道：

我的目标是从命令行传递凭据。

机器人支持使用--variable( 和-v) 命令行选项。使用此选项将覆盖任何导入的变量或机器人文件中定义的变量。

例如，您可以在测试本身内设置凭据的默认值：

*** Variables ***
${USER}         test@test.com
${PASSWORD}     test@123
${ENVIRONMENT}  QA1

*** Test cases ***
Example
    log to console  \n*****
    log to console  username: ${USER}
    log to console  password: ${PASSWORD}
    log to console  environment: ${ENVIRONMENT}

-v您可以使用或从命令行修改这些值--variable：

$ robot -v USER:bob -v PASSWORD:bob@123  -v ENVIRONMENT:QA2 ...

如果需要在 python 函数中访问这些变量而不传入它们，可以使用内置关键字get_variable_value来获取值：

from robot.libraries.BuiltIn import BuiltIn
...
user = BuiltIn().get_variable_value('${USER}')