The if __name__ == "__main__" block in Python allows you to define code that will only run when the file is executed directly as a script, but not when it's imported as a module into another script. Aug 12, 2024 · 8 min read Contents Understanding __name__ and "__main__"...
if __name__ == ‘__main__’: main() After returning the banner, our script needs to check this banner against some known vulnerable programs. This also reflects a single, related function. The function checkVulns() takes the variable banner as a parameter and then uses it to make a ...
x = input('Please input an integer of 4 digits meaning the year:') x = eval(x) if x%400==0 or (x%4==0 and not x%100==0): print('Yes') else: print('No') 3.3 Python提供了两种基本的循环结构:___和___。(for循环、while循环) 3.4 编写程序,生成一个包含50个随机整数的列表,然...
表达式 [index for index, value in enumerate([3,5,7,3,7]) if value == max([3,5,7,3,7])] 的值为___。([2, 4]) 已知x = [3,5,3,7],那么表达式 [x.index(i) for i in x if i==3] 的值为___。([0, 0]) 已知列表 x = [1, 2],那么表达式 list(enumerate(x)) 的值...
Note: When the debugger performs a reload, code that runs on import might be executed again. To avoid this situation, try to only use imports, constants, and definitions in your module, placing all code into functions. Alternatively, you can also useif __name__=="__main__"checks. ...
If you try the assignment with an undefined variable, then you get an error: Python >>> count = count + 1 Traceback (most recent call last): ... NameError: name 'count' is not defined. Did you mean: 'round'? In this example, the count variable isn’t defined before the ...
\n {exc}") if __name__ == "__main__": parser = ArgumentParser() parser.add_argument("project_name", type=str) args = parser.parse_args() create_new_project(args.project_name) This is a command-line tool that you can call to start a project. It’ll take care of creating a...
现在,创建一个名为test_if.py的测试脚本,并在其中编写以下代码: importif_exampleimportunittestclassTest_if(unittest.TestCase):deftest_if(self): result = if_example.check_if() self.assertEqual(result,100)if__name__ =='__main__': unittest.main() ...
int(argv[2]),1)-datetime.timedelta(days=1)ifargv[2]=='12':d2=datetime.date(int(argv[1])+1,int(1),1)-datetime.timedelta(days=1)else:d2=datetime.date(int(argv[1]),int(argv[2])+1,1)-datetime.timedelta(days=1)print((d2-d1).days)if__name__=='__main__':iflen(sys.argv...
Still, if you do eventually switch to Python 3 and plan on using a module as both a package module and as a standalone script inside the package, it may be a good idea to keep something like if__name__ =='__main__':from[whatever the name of your packageis]importone# assuming th...