idcheck2.py 文件源码

def main():
    print 'Welcome to the Identifier Checker v2.0'
    myInput = raw_input('Identifier to test? ').strip()

    if len(myInput) == 0:
    print "ERROR: no identifier candidate entered"
    return

    if myInput in kwlist:
    print "ERROR: %r is a keyword" % myInput
    return

    alnums = ALPHAS + NUMS
    for i, c in enumerate(myInput):
    if i == 0 and c not in ALPHAS:
        print 'ERROR: first symbol must be alphabetic'
        break
    if c not in alnums:
        print 'ERROR: remaining symbols must be alphanumeric'
        break
    else:
    print "okay as an identifier"