ID Check : Member « String « Python Tutorial

1. Python Tutorial
2. String
3. Member

import string

alphas = string.letters + '_'
nums = string.digits

myInput = "input"

if len(myInput) > 1:

    if myInput[0] not in alphas:
        print '''invalid: first symbol must be alphabetic'''
    else:
        for otherChar in myInput[1:]:
             if otherChar not in alphas + nums:
                 print '''invalid: remaining symbols must be alphanumeric'''
                 break
        else:
            print "okay as an identifier"