test.py内容：
# 读取file01和file02文件的全部内容，进行全局排序，将结果写入file03
key_list = []
key_val_dic = {}
f1 = open("file01", "r")
f2 = open("file02", "r")
xx = [f1, f2]
for ff in xx:
for line in ff:
key, val = line.strip().split('\t')
key_list.append(int(key))
key_val_dic[key] = val
f1.close()
f2.close()
f3 = open("file03", "w")
key_list.sort()
for i in range(len(key_list)):
str1 = str(i) + "\t" + key_val_dic[str(i)]
f3.write(str1)
f3.write("\n")
f3.close()
file01文件内容：
0 java
2 java
4 java
6 java
8 java
10 java
12 java
14 java
16 java
18 java
20 java
22 java
24 java
26 java
28 java
30 java
32 java
34 java
36 java
38 java
40 java
42 java
44 java
46 java
48 java
50 java
52 java
54 java
56 java
58 java
60 java
62 java
64 java
66 java
68 java
70 java
72 java
74 java
76 java
78 java
80 java
82 java
84 java
86 java
88 java
90 java
92 java
94 java
96 java
98 java
100 java
file02文件内容：
1 hadoop
3 hadoop
5 hadoop
7 hadoop
9 hadoop
11 hadoop
13 hadoop
15 hadoop
17 hadoop
19 hadoop
21 hadoop
23 hadoop
25 hadoop
27 hadoop
29 hadoop
31 hadoop
33 hadoop
35 hadoop
37 hadoop
39 hadoop
41 hadoop
43 hadoop
45 hadoop
47 hadoop
49 hadoop
51 hadoop
53 hadoop
55 hadoop
57 hadoop
59 hadoop
61 hadoop
63 hadoop
65 hadoop
67 hadoop
69 hadoop
71 hadoop
73 hadoop
75 hadoop
77 hadoop
79 hadoop
81 hadoop
83 hadoop
85 hadoop
87 hadoop
89 hadoop
91 hadoop
93 hadoop
95 hadoop
97 hadoop
99 hadoop
结果文件file03:
全局排序.PNG
