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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"
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