python开发_python中的函数定义
发布时间:2020-12-17 00:18:40 所属栏目:Python 来源:网络整理
导读:下面是我做的几个用列: def_str = ( == ( x** a,b = 0,1 a (a,end= a,b = b,a + length > i ask_ok(prompt,retries=4,complaint= ok = ok ( , , ok ( , , , retries = retries - 1 retries IOError( == x = 3 y = 4 n = 2000 (x, ,y, ,x, , ( (getList([ ],
下面是我做的几个用列:
def_str =
(
==
(
x**
a,b = 0,1
a < (a,end= a,b = b,a +
length > i
ask_ok(prompt,retries=4,complaint= ok = ok (,, ok (,,, retries = retries - 1
retries < IOError(
== x = 3
y = 4
n = 2000
(x,,y,,x,, ( (getList([],-10 ask_ok()
运行效果: Python 3.3.2 (v3.3.2:d047928ae3f6,May 16 2013,00:03:43) [MSC v.1600 32, >>> ================================ RESTART ================================
>>> </span><span style="color: #0000ff;">def</span><span style="color: #000000;"> 函数名称([参数1,参数2,参数3......]):
执行语句
如:
</span><span style="color: #0000ff;">def</span><span style="color: #000000;"> helloWorld():
</span><span style="color: #0000ff;">print</span>(<span style="color: #800000;">'</span><span style="color: #800000;">hello</span><span style="color: #800000;">'</span><span style="color: #000000;">)
</span><span style="color: #0000ff;">if</span> <span style="color: #800080;">__name__</span> == <span style="color: #800000;">'</span><span style="color: #800000;">_main__</span><span style="color: #800000;">'</span><span style="color: #000000;">:
helloWorld()
输出:hello
输出:hello <span style="color: #000000;"> 函数可以带参数和返回值,参数将按从左到右的匹配, 参数可设置默认值,当使用函数时没给相应的参数时, 会按照默认值进行赋值
3 的 4 次方( 3 ** 4 ) = 81<span style="color: #000000;"> 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597<span style="color: #000000;"> 你输入的长度小于0 y输出:hello Yes <span style="color: #0000ff;">or<span style="color: #000000;"> no,please! y Yes <span style="color: #0000ff;">or<span style="color: #000000;"> no,please! y Traceback (most recent call last): File <span style="color: #800000;">"<span style="color: #800000;">E:/Python33/python_workspace/test_function.py<span style="color: #800000;">",line 80,<span style="color: #0000ff;">in ask_ok(<span style="color: #800000;">'<span style="color: #800000;">y<span style="color: #800000;">'<span style="color: #000000;">) File <span style="color: #800000;">"<span style="color: #800000;">E:/Python33/python_workspace/test_function.py<span style="color: #800000;">",line 69,<span style="color: #0000ff;">in<span style="color: #000000;"> ask_ok <span style="color: #0000ff;">raise IOError(<span style="color: #800000;">'<span style="color: #800000;">refusenik user<span style="color: #800000;">'<span style="color: #000000;">) OSError: refusenik user >>> (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |