enumerate用法总结-Python 3

1 # _*_ coding: utf-8 _*_
2 # __Author: "LEMON"
3 
4 
5 list = [‘This‘, ‘is‘, ‘a‘, ‘test‘]
6 for i in range(len(list)):
7     print(i, list[i])

 1 # _*_ coding: utf-8 _*_
 2 # __Author: "LEMON"
 3 
 4 
 5 list = [‘This‘, ‘is‘, ‘a‘, ‘test‘]
 6 #for i in range(len(list)):
 7 #    print(i, list[i])
 8 
 9 for index, item in enumerate(list):
10     print(index, item)
11 
12 
13 >>>
14 0 This
15 1 is
16 2 a
17 3 test

# _*_ coding: utf-8 _*_
# __Author: "LEMON"


list = [‘This‘, ‘is‘, ‘a‘, ‘test‘]
#for i in range(len(list)):
#    print(i, list[i])

#for index, item in enumerate(list):
for index, item in enumerate(list,1):
    print(index, item)


>>>
1 This
2 is
3 a
4 test

1 count = len(open(filepath, ‘r‘).readlines())

1 # _*_ coding: utf-8 _*_
2 # __Author: "LEMON"
3 
4 
5 count = 0
6 for index, line in enumerate(open(‘test01.txt‘,‘r‘)):
7     count = count + 1
8 print(count)

1 # _*_ coding: utf-8 _*_
2 # __Author: "LEMON"
3 
4 
5 week = [‘Mon‘, ‘Tue‘, ‘Wed‘, ‘Thu‘, ‘Fri‘]
6 weekend = [‘Sat‘, ‘Sun‘]
7 week.extend(weekend)
8 for i,j in enumerate(week,1):
9     print(i, j)

1 >>>
2 
3 1 Mon
4 2 Tue
5 3 Wed
6 4 Thu
7 5 Fri
8 6 Sat
9 7 Sun