The built-in function enumerate python3

python3 built-in function enumerate 
I. Introduction: 
　　　　This function is literally enumeration, include mean, for a data object to be traversed (e.g., list, string, or tuples) as a combination index sequence, 
　　while the data lists and the subscript data, which is generally used in a for loop, the index values may be obtained and the corresponding data objects simultaneously. As described for the following example: 

II Syntax: 
 　　the enumerate (Iterable, Start) 
 　　Iterable: iterables (list of tuples, dictionaries, iterator, string, etc.) 
 　　STAT: starting value of the sequence index 

Note: This built-in functions common language for loop 

III example 1:

 1 a = ['zero','one','two','three','four','five','six','seven','eight','nine','ten']
 2 for index,i in enumerate(a):
 3     print(index,i)
 4 # 0 zero
 5 # 1 one
 6 # 2 two
 7 # 3 three
 8 # 4 four
 9 # 5 five
10 # 6 six
11 # 7 seven
12 # 8 eight
13 # 9 nine
14 # 10 ten

　　Example 2:

 1 b = ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday']
 2 for index,i in enumerate(b,1):
 3     print("星期%d:%s"%(index,i))
 4 
 5 # 星期1:Monday
 6 # 星期2:Tuesday
 7 # Week. 3: catalog on Wednesday 
. 8  # weeks. 4: catalog on Thursday 
. 9  # weeks. 5: catalog on Friday 
10  # weeks. 6: Saturday 
. 11  # Week 7: Sunday