Ideal

早就发现Unsplash上的照片都好美，非常适合做图片，最近有空查了下发现Unsplash有提供api，于是我就搞了个Python脚本下这些图片，另外申请的是dev用途的api key，所以每个小时只能调用100次。
API
=====
API文档 https://unsplash.com/developers
url: https://api.unsplash.com/photos?page=1&client_id=YOUR_CLIENT_ID
返回json

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
[
  {
    "id": "qIwFIwxl3CI",
    "created_at": "2016-05-25T08:18:13-04:00",
    "width": 6000,
    "height": 4000,
    "color": "#C4CDF8",
    "likes": 26,
    "liked_by_user": false,
    "user": {
      "id": "EE_nXdS9eDA",
      "username": "jtc",
      "name": "Jesse Collins",
      "profile_image": {
        "small": "https://images.unsplash.com/profile-fb-1449247869-60cdce9ffdf3.jpg?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&fit=crop&h=32&w=32&s=8d80b1b60af1d736d4caa2c30405596c",
        "medium": "https://images.unsplash.com/profile-fb-1449247869-60cdce9ffdf3.jpg?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&fit=crop&h=64&w=64&s=600eda7460fba39075a8a36c365f74f8",
        "large": "https://images.unsplash.com/profile-fb-1449247869-60cdce9ffdf3.jpg?ixlib=rb-0.3.5&q=80&fm=jpg&crop=faces&fit=crop&h=128&w=128&s=747513014baac7b141d9509c3aadc0e0"
      },
      "links": {
        "self": "https://api.unsplash.com/users/jtc",
        "html": "http://unsplash.com/@jtc",
        "photos": "https://api.unsplash.com/users/jtc/photos",
        "likes": "https://api.unsplash.com/users/jtc/likes"
      }
    },
    "current_user_collections": [],
    "urls": {
      "raw": "https://images.unsplash.com/photo-1464178634217-fdda7ccaf33d",
      "full": "https://images.unsplash.com/photo-1464178634217-fdda7ccaf33d?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&s=2906d37810fa60db2d199a5af81e96de",
      "regular": "https://images.unsplash.com/photo-1464178634217-fdda7ccaf33d?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&w=1080&fit=max&s=539ca882797c062051d5d614c991aa0e",
      "small": "https://images.unsplash.com/photo-1464178634217-fdda7ccaf33d?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&w=400&fit=max&s=e6ed2cb890f9c17bfca0e77602cd4f4f",
      "thumb": "https://images.unsplash.com/photo-1464178634217-fdda7ccaf33d?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&w=200&fit=max&s=c4e4f1017e7f4ec0b1446258e058ae2d"
    },
    "categories": [
      {
        "id": 4,
        "title": "Nature",
        "photo_count": 45678,
        "links": {
          "self": "https://api.unsplash.com/categories/4",
          "photos": "https://api.unsplash.com/categories/4/photos"
        }
      }
    ]
    ...
  ]

可以看到，我们能通过urls提供的连接选择所需要的不同大小的照片。另外可以改变url参数page翻页，默认一页是10张照片。
Python
======

  1. 使用requests得到图片的url
    1
    2
    3
    payload = {'client_id': 'YOUR CLIENT_ID'
                   ,'page':page_num}
    r = requests.get('https://api.unsplash.com/photos', params = payload)
  2. 通过urllib2下载图片
    1
    imgData = urllib2.urlopen(pic_url).read()
  3. 写入文件
    1
    2
    3
    4
    5
    6
    7
    if not os.path.exists(fileName):
               output = open(fileName,'wb+')
               output.write(imgData)
               output.close()
               print("Finished download " + pic_id)
           else:
               print("path not exists")
    代码我已经上传github了：https://github.com/brucewzp/fetchingUnsplashPhotos