python 字符串（str）和列表（list）的互相转换

1.str >>>list 

str1 = "12345"

list1 = list(str1)

print list1

str2 = "123 sjhid dhi"

list2 = str2.split()

#or list2 = str2.split(" ")

print list2

str3 = "www.google.com"

list3 = str3.split(".")

print list3

2.list >>>str

1.  
   str4 = "".join(list3)
2.  
   print str4
3.  
   str5 = ".".join(list3)
4.  
   print str5
5.  
   str6 = " ".join(list3)
6.  
   print str6