生成有时间规则的id

nextid.py

import datetime

def __next_id():
    _inum = [10000] 
    def _next():
        if _inum[0] >= 99999:
            _inum[0] = 10000
        _inum[0] += 1
        _prefix = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
        return int("%s%s"%(_prefix,_inum[0]))
    return _next

nextid = __next_id()

if __name__ == '__main__':
    print nextid()

import datetime

def __next_id():
_inum = [10000]
def _next():
if _inum[0] >= 99999:
_inum[0] = 10000
_inum[0] += 1
_prefix = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
return int("%s%s"%(_prefix,_inum[0]))
return _next

nextid = __next_id()

if name == 'main':
print nextid()