Python: How to check integer ?

[nileshgr]

Hi I am new to Python.

Suppose an app is accepting input then how do I validate that it is integer or not ?

 

[QwertyManiac]

Use a simple try and catch block?

a = raw_input('Enter an integer: ')
try:
	a=int(a)
except:
	print 'Please enter a valid integer'
	exit(1)
print 'You entered:', a

 

[nileshgr]

Thanks. Well, my usage isn't command line but using mod_python & httpd. I need this for my new upcoming site which is going to be programmed in Python.

 

[QwertyManiac]

Well, basically all I'd said was to try an int() conversion and except its error messages in case it encounters a number/literal not suitable for conversion to base 10. That is how you check for an input being a valid integer convertible.

This method is not "command-line", only my test input was. Learn some more Python before jumping into the line of fire.