Python[一]:Indent and Fib

[qibaoyuan@qibaoyuan ~]$ pythonPython 2.6.4 (r264:75706, Jun 4 2010, 18:20:16) [GCC 4.4.4 20100503 (Red Hat 4.4.4-2)] on linux2Type "help", "copyright", "credits" or "license" for more information.>>> x=int(input('input an integer:'))input an integer:2>>> if x<0:... x=0;... print('negeative input')... elif x==0:... print('zero');... elif x==1:... print('1');... else:... print('More')... More>>> def initlog(*args):... raise NotImplentedError... if not logfp:... raise NotImplentedError... raise NotImplementedError('call log init handler')... >>> def fib(n):... a,b=0,1... while b<n:... print(b,' ')... a,b=b,a+b... print()... >>> fib(2000)(1, ' ')(1, ' ')(2, ' ')(3, ' ')(5, ' ')(8, ' ')(13, ' ')(21, ' ')(34, ' ')(55, ' ')(89, ' ')(144, ' ')(233, ' ')(377, ' ')(610, ' ')(987, ' ')(1597, ' ')()