python gflags module help flag doesn't work -


i have problem use python gflags module in selenium web test suite. follow way how example in gflags github repo. new flags defined via define_string working. default 1 --help doesn't work.

here code:

#!/usr/bin/env python import datetime import gflags import sys import time import os import glob import unittest selenium import webdriver pageobject.contact_us_page import contactuspage pageobject.utility import sendemailnotification selenium.webdriver.support.ui import webdriverwait selenium.webdriver.support import expected_conditions ec selenium.webdriver.common.by import  flags = gflags.flags gflags.define_string('sender_addr', '', 'the sender of email notification') gflags.define_list('receivers_addr', '', 'the list of receivers') gflags.define_string('sender_password', '', 'the password of sender email box')   class testcontactuspage(unittest.testcase):      @classmethod     def setupclass(cls):         cls.driver = webdriver.chrome('../chromedriver')         cls.cu_page = contactuspage(cls.driver)      @classmethod     def teardownclass(cls):         cls.driver.close()      def tally(self):         return len(self._resultfordocleanups.errors) + len(self._resultfordocleanups.failures)      def setup(self):         self.errors_and_failures = self.tally()      def teardown(self):          # if sys.exc_info()[0]:         #     message = 'test fails expection: %s' % sys.exc_info()[1]         #     subject = 'test fails'         #     utilitylib.sendemailresult('zth198814@gmail.com', '314885400@qq.com',)         if self.tally() > self.errors_and_failures:             = datetime.datetime.now().strftime('%y-%m-%d_%h:%m:%s')             self.cu_page.takescreenshot('error_' + now)      def teststep01(self):         self.cu_page.open()         time.sleep(3)         title = self.driver.title         self.assertequal(title, 'parkside lending llc')      def teststep02(self):         self.cu_page.gotopage()         title_element = webdriverwait(self.driver, 5).until(ec.presence_of_element_located((             by.xpath, '//h1[contains(.,"contact us")]')))         self.cu_page.takescreenshot('cupage')         self.assertequal(title_element.text, 'contact us')      def teststep03(self):         self.cu_page.fillcontactform()         submit_button = self.driver.find_element_by_name('submit')         submit_button.click()         self.asserttrue(self.cu_page.submitverification(), 'contact form submission fails, please check out '                                                            'output , screen shot.')  if __name__ == '__main__':     flags(sys.argv)     suite = unittest.testloader().loadtestsfromtestcase(testcontactuspage)     testresult = unittest.texttestrunner(verbosity=2).run(suite)     = datetime.datetime.now().strftime('%y-%m-%d_%h:%m:%s')     error_file = max((glob.glob('error_*.png')), key=os.path.getmtime)     sender = flags.sender_addr     receipts = flags.receivers_addr     password = flags.sender_password     open('test.out', 'w') f:          if testresult.wassuccessful():             f.write('%s --- %s test steps passed, %s failures , %s errors' % (now, testresult.testsrun,                     testresult.failures, testresult.errors))         else:             f.write('%s --- test steps failed.\n' % now)             if len(testresult.failures):                 failure in testresult.failures:                     f.write('test failing at: %s\n' % failure[0])                     f.write(failure[1])             if len(testresult.errors):                 error in testresult.errors:                     f.write('test has error at: %s\n' % error[0])                     f.write(error[1])     open('test.out', 'r') f:         message = f.read()         if testresult.wassuccessful():             subject = 'all contact page test steps passed'         else:             subject = 'contact page test steps failed.'             sendemailnotification().sendemailresult(             sender, receipts, message, subject,             ['cupage.png', error_file]             , password) 

here output if use python contact_us_page_test.py --help try text.

python contact_us_page_test.py --help  traceback (most recent call last):   file "contact_us_page_test.py", line 70, in <module>     flags(sys.argv)   file "/usr/local/lib/python2.7/dist-packages/gflags/flagvalues.py", line 708, in __call__     name, value, suggestions=suggestions) gflags.exceptions.unrecognizedflagerror: unknown command line flag 'help' 

python gflags not provide --help flag. however, gflags.flags object stringifies full help. use this:

try:   argv = flags(sys.argv) except gflags.flagserror e:   print "%s\nusage: %s args\n%s" % (e, sys.argv[0], flags)   sys.exit(1) 

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