python之BIF函数在列表中的应用

 1 Python 3.3.4 (v3.3.4:7ff62415e426, Feb 10 2014, 18:13:51) [MSC v.1600 64 bit (AMD64)] on win32

2 Type "copyright", "credits" or "license()" for more information.
3 >>> cast=["cleese","palin","jones","idle"]
4 >>> print(cast)
5 [""cleese"", ""palin"", ""jones"", ""idle""]
6 >>> print(len(cast))#显示数据项数量
7 4
8 >>> print(cast[1])#显示列表中第2个数据项的值
9 palin
10 >>> cast.append("gilliam")#在列表末尾添加一个数据项
11 >>> print(cast)
12 [""cleese"", ""palin"", ""jones"", ""idle"", ""gilliam""]
13 >>> cast.pop()#删除列表末尾的数据项
14 ""gilliam""
15 >>> print(cast)
16 [""cleese"", ""palin"", ""jones"", ""idle""]
17 >>> cast.extend(["gilliam","chapman"])#在列表末尾增长一个数据项凑集
18 >>> print(cast)
19 [""cleese"", ""palin"", ""jones"", ""idle"", ""gilliam"", ""chapman""]
20 >>> cast.remove("chapman")#删除指定的数据项
21 >>> print(cast)
22 [""cleese"", ""palin"", ""jones"", ""idle"", ""gilliam""]
23 >>> cast.(0,"chapman")#在指定的地位增长数据项
24 >>> print(cast)
25 [""chapman"", ""cleese"", ""palin"", ""jones"", ""idle"", ""gilliam""]
26 >>>



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

 

python之BIF函数在列表中的应用
 1 movies=["the holy grail",1975,"terry jone & terry gilliam",91,

 2        ["graham chapman",

 3        ["michael palin","john cleese","terry gilliam",

 4             "eric idle","terry jones"]]]

 5 def print_something(the_list):#定义一种函数

 6         for each_item in the_list:#for in轮回迭代处理惩罚列表,从列表肇端地位到末尾

 7         if isinstance(each_item,list):#isinstance()检测each_item里每一项

 8                                               #是不是list类型

 9             print_something(each_item)#若是是,调用函数print_something

10         else:print(each_item)#若是不是,输出这一项

11 

12 print_something(movies)#在movies列表中调用函数

13 """

14 之前if else语句不合错误齐导致报错

15 """
python之BIF函数在列表中的应用

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python之BIF函数在列表中的应用

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