这篇文章详解关于python判断参数是否是合法标识符介绍
import string
def is_valid_identifier(param):
alphas = string.letters + ‘_’
nums = string.digits
if len(param) > 1:
if param[0] not in alphas:
print ‘invalid:first symbol must be alphabetic’
else:
for otherchar in param[1:]:
if otherchar not in alphas + nums:
print ‘invalid:reminding symbols must be alphanumeric’
break
else:
print ‘okay, %s is an valid identifier’%param
is_valid_identifier(‘class’)
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