CODEWITHSUNDEEP
javapythonpython-2.7python-3.x
Gowtham SB
Gowtham SB

Reputation: 332

Class , Method , Instance creation and Main equivalent to Java in Python

I am trying to implement a sample python program with class , some method and instance creation (object creation) with main method . But I am new to python I tried with lot of example but I am not getting the exact flow of the above in python . Below is the java code i need the equivalent in python .

Class hello {            //Class name

    void display () {          // user defined method    
        System.out.println("Hello");    
    }

    public static void main(String args[]) { //main method    
        hello obj=new hello();  //instance creation (object creation)
        obj.display();  // invoking methods 
    }
}

Output 

Hello

I need the above code in python please help me out in this

The python what I tried with the same 

import sys

class MyApplication():

    def get_name():
        print 'hi'

def main():
    app=MyApplication()
    print('Hi ' + app.get_name())

    if __name__ == '__main__':
        main()

But this above python code is not working and not giving any error and output .I am getting blank console

Upvotes: 1

Views: 1087

Answers (2)

niyasc
niyasc

Reputation: 4490

In python, intendation is very important. If you intend some code segment, it means that code segment is part of a block.

See following snippet from your code

def main():
    app=MyApplication()
    print('Hi ' + app.get_name())

    if __name__ == '__main__':
        main()

You should correct indentation of this code segment. It should be,

def main():
    app = MyApplication()
    print('Hi ' + app.get_name())

if __name__ == '__main__':
    main()

'__main__' is the name of the scope in which top-level code executes. A module’s __name__ is set equal to '__main__' when read from standard input, a script, or from an interactive prompt.

A module can discover whether or not it is running in the main scope by checking its own __name__, which allows a common idiom for conditionally executing code in a module when it is run as a script or with python -m but not when it is imported: A module can discover whether or not it is running in the main scope by checking its own __name__, which allows a common idiom for conditionally executing code in a module when it is run as a script or with python -m but not when it is imported: - Python documentation

Upvotes: 7

Gowtham SB
Gowtham SB

Reputation: 332

Thanks for your replay after doing the modification it is working and also added "self" inside my method get_name(self) as args it is working now

Code Below 

import sys

class MyApplication():

    def get_name(self):
        print   'hi'


def main():
    app=MyApplication()
    app.get_name()

if __name__ == '__main__':
    main()

Upvotes: 1

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