Python基础，,Python的流程控

Python基础，,Python的流程控

Python的流程控制

if else ,  for ,  range() ,  break continue ,  pass

Python 的for语句依据任意序列（链表或字符串）中的子项，按它们在序列中的顺序来进行迭代。

与循环一起使用时，else子句与try语句的else子句比与if语句的具有更多的共同点：try语句的else子句在未出现异常时运行，循环的else子句在未出现break时运行。

定义函数

def fibs(n):
    """Print a Fibonacci series up to n."""    a,b = 0,1    while a < n:        print (a)        a,b = b,a+b---def fibs(max):
    """Print a Fibonacci series of the first n."""    n,a,b = 0,0,1    while n < max:        print (a)        a,b = b,a+b        n = n + 1    return ‘done‘
‘‘‘
a, b = b, a+b

be equal to

t = (b, a+b) # t is a tuple
a = t[0]
b = t[1]
‘‘‘

def fib2(n): # return Fibonacci series up to n    """Return a list containing the Fibonacci series up to n."""    result = []    a, b = 0, 1while a < n:        result.append(a)    # see below        a, b = b, a+b    return result

参考链接1

参考链接2

Python基础