Python学习笔记1——人人都爱列表

一些BIF函数在列表中的应用：

 Python 3.3.4 (v3.3.4:7ff62415e426, Feb 10 2014, 18:13:51) [MSC v.1600 64 bit (AMD64)] on win32
 Type "copyright", "credits" or "license()" for more information.
 >>> cast=["cleese","palin","jones","idle"]
 >>> print(cast)
 ['cleese', 'palin', 'jones', 'idle']
 >>> print(len(cast))#显示数据项数量
 4
 >>> print(cast[1])#显示列表中第2个数据项的值
 palin
 >>> cast.append("gilliam")#在列表末尾添加一个数据项
 >>> print(cast)
 ['cleese', 'palin', 'jones', 'idle', 'gilliam']
 >>> cast.pop()#删除列表末尾的数据项
 'gilliam'
 >>> print(cast)
 ['cleese', 'palin', 'jones', 'idle']
 >>> cast.extend(["gilliam","chapman"])#在列表末尾增加一个数据项集合
 >>> print(cast)
 ['cleese', 'palin', 'jones', 'idle', 'gilliam', 'chapman']
 >>> cast.remove("chapman")#删除指定的数据项
 >>> print(cast)
 ['cleese', 'palin', 'jones', 'idle', 'gilliam']
 >>> cast.insert(0,"chapman")#在指定的位置增加数据项
 >>> print(cast)
 ['chapman', 'cleese', 'palin', 'jones', 'idle', 'gilliam']
 >>> 

下面是讲定义一个def函数，isinstance()函数，for in，if else等的运用以及逻辑

 movies=["the holy grail",1975,"terry jone & terry gilliam",91,
        ["graham chapman",
        ["michael palin","john cleese","terry gilliam",
             "eric idle","terry jones"]]]
 def print_lol(the_list):#定义一种函数
         for each_item in the_list:#for in循环迭代处理列表，从列表起始位置到末尾
         if isinstance(each_item,list):#isinstance()检测each_item里每一项
                                               #是不是list类型
             print_lol(each_item)#如果是，调用函数print_lol
         else:print(each_item)#如果不是，输出这一项

 print_lol(movies)#在movies列表中调用函数
 """
 之前if else语句不对齐导致报错
 """

下一个笔记记录WIN7环境下python自定义模块的发布