如果你对python中的for循环不是很清楚,请看看这篇文章:”for循环控制语句——菜鸟的Python笔记“
下面是我做的一些学习记录供大家参考:
#基本的for循环语句
test_list = [2,"Jone",3,6,7,'hongten','hanyuan','good',"Tom"]
#打印列表的长度
print(len(test_list)) #遍历列表
for i in test_list:
print(i) test_str = "hello,i'm hongten"
print('打印字符串:' + test_str)
#遍历一个字符串
print('遍历一个字符串')
for i in test_str:
print(i) test_tuple = [("a",1),("b",2),("c",3),("d",4)]
print(test_tuple)
#遍历一个元组
print('遍历一个元组')
for (i,j) in test_tuple:
print(i,j) test_dict = {'name':'hongten','age':'','gender':'M','sports':'足球,乒乓球,游泳'}
#字典迭代器
for key in test_dict:
print(key + ':' + test_dict[key]) L1 = [1,3,5,7]
L2 = [2,4,6,8]
#使用zip将两个列表合并
print(zip(L1,L2)) for (i,j) in zip(L1,L2):
print(i,j)
print('#######################################################')
L3 = L2[:]
L3.remove(8)
print('L1,L3列表为:')
print(L1)
print(L3)
for (i,j) in zip(L1,L3):
print(i,j) #可以看出来当长度不一的时候,多余的被忽略 test_keys = ['name','age','gender','weight','hight']
test_values = ['Hongten','','M','','']
#使用zip来构造一个字典
print('字典中的keys:')
print(test_keys)
print('字典中的key对应的value:')
print(test_values)
print('构造字典后')
test_dic = dict(zip(test_keys,test_values))
for key in test_dic:
print( key + ':' + test_dic[key])
运行效果:
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>>
9
2
Jone
3
6
7
hongten
hanyuan
good
Tom
打印字符串:hello,i'm hongten
遍历一个字符串
h
e
l
l
o
,
i
'
m h
o
n
g
t
e
n
[('a', 1), ('b', 2), ('c', 3), ('d', 4)]
遍历一个元组
a 1
b 2
c 3
d 4
sports:足球,乒乓球,游泳
gender:M
name:hongten
age:20
<zip object at 0x01FA1AA8>
1 2
3 4
5 6
7 8
#######################################################
L1,L3列表为:
[1, 3, 5, 7]
[2, 4, 6]
1 2
3 4
5 6
字典中的keys:
['name', 'age', 'gender', 'weight', 'hight']
字典中的key对应的value:
['Hongten', '', 'M', '', '']
构造字典后
weight:55
hight:170
gender:M
name:Hongten
age:20
>>>