cant able to make methods interact with each other in the class

[ndc85430]

You're trying to call main before it is declared - remember the interpreter parses the file from top to bottom. Why are you trying to call it on line 9 anyway?

Also, your code doesn't really make a lot of sense:

1. Why is the function called main in the first place; that doesn't seem to be a particularly descriptive name.

2. the pin_check method will return None in the else branch. Is that what you intended? Also, why do you need the local variables pin1 and pin2? Obviously you have access to the member variables self.pin1 and self.pin2.

3. Generally, your classes shouldn't really be taking input from the console - it's not particularly good design. Why aren't you passing the values to the __init__ method?

4. options creates a local variable opt that just gets thrown away.

I'm sure there are more things to comment on, but this is all I noticed on a quick glance.