1，安裝python3.5

如果python還沒有安裝，可以直接用yum安裝，

1. # 不過安裝的是2.6 version
2. yum install -y python

源碼安裝3.5

1. wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz
2. tar -xvf Python-3.5.0.tgz
3. cd Python-3.5.0
4. ./configure --prefix=/usr/local--enable-shared
5. make
6. make install
7. ln -s /usr/local/bin/python3 /usr/bin/python3

運行Python之前需要配置庫

echo /usr/local/lib >> /etc/ld.so.conf.d/local.conf

ldconfig

運行演示

python3 --version

部分執行過程：

1. [root@03_sdwm Python-3.5.0]# echo/usr/local/lib >> /etc/ld.so.conf.d/local.conf
2. [root@03_sdwm Python-3.5.0]# ldconfig
3. [root@03_sdwm Python-3.5.0]#
4. [root@03_sdwm Python-3.5.0]#
5. [root@03_sdwm Python-3.5.0]# python3--version
6. Python 3.5.0
7. [root@03_sdwm Python-3.5.0]#

2，安裝pymongo

安裝方法有2種，分別是Installing with pip和Installing with easy_install，這裏采用Installing witheasy_install參考官方文章：

http://api.mongodb.com/python/current/installation.html#installing-with-easy-install，

安裝python pymongo

1. [root@03_sdwm ~]# python3 -m easy_install pymongo
2. Searching for pymongo
3. Reading http://pypi.python.org/simple/pymongo/
4. Best match: pymongo 3.4.0
5. Downloading https://pypi.python.org/packages/82/26/f45f95841de5164c48e2e03aff7f0702e22cef2336238d212d8f93e91ea8/pymongo-3.4.0.tar.gz#md5=aa77f88e51e281c9f328cea701bb6f3e
6. Processing pymongo-3.4.0.tar.gz
7. Running pymongo-3.4.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-ZZv1Ig/pymongo-3.4.0/egg-dist-tmp-LRDmoy
8. zip_safe flag not set; analyzing archive contents...
9. Adding pymongo 3.4.0 to easy-install.pth file
11. Installed /usr/lib/python2.6/site-packages/pymongo-3.4.0-py2.6-linux-x86_64.egg
12. Processing dependencies for pymongo
13. Finished processing dependencies for pymongo
14. [root@03_sdwm ~]#

3，使用pymongo操作mongodb

1. #!/usr/bin/env python
2. # -*- coding: utf-8 -*-
4. import pymongo
5. import datetime
8. def get_db():
9. # 建立連接
10. client = pymongo.MongoClient(host="10.244.25.180", port=27017)
11. db = client[‘example‘]
12. #或者 db = client.example
13. return db
16. def get_collection(db):
17. # 選擇集合（mongo中collection和database都是延時創建的）
18. coll = db[‘informations‘]
19. print db.collection_names()
20. return coll
23. def insert_one_doc(db):
24. # 插入一個document
25. coll = db[‘informations‘]
26. information = {"name": "quyang", "age": "25"}
27. information_id = coll.insert(information)
28. print information_id
31. def insert_multi_docs(db):
32. # 批量插入documents,插入一個數組
33. coll = db[‘informations‘]
34. information = [{"name": "xiaoming", "age": "25"}, {"name": "xiaoqiang", "age": "24"}]
35. information_id = coll.insert(information)
36. print information_id
39. def get_one_doc(db):
40. # 有就返回一個，沒有就返回None
41. coll = db[‘informations‘]
42. print coll.find_one() # 返回第一條記錄
43. print coll.find_one({"name": "quyang"})
44. print coll.find_one({"name": "none"})
47. def get_one_by_id(db):
48. # 通過objectid來查找一個doc
49. coll = db[‘informations‘]
50. obj = coll.find_one()
51. obj_id = obj["_id"]
52. print "_id 為ObjectId類型，obj_id:" + str(obj_id)
54. print coll.find_one({"_id": obj_id})
55. # 需要註意這裏的obj_id是一個對象，不是一個str，使用str類型作為_id的值無法找到記錄
56. print "_id 為str類型 "
57. print coll.find_one({"_id": str(obj_id)})
58. # 可以通過ObjectId方法把str轉成ObjectId類型
59. from bson.objectid import ObjectId
61. print "_id 轉換成ObjectId類型"
62. print coll.find_one({"_id": ObjectId(str(obj_id))})
65. def get_many_docs(db):
66. # mongo中提供了過濾查找的方法，可以通過各種條件篩選來獲取數據集，還可以對數據進行計數，排序等處理
67. coll = db[‘informations‘]
68. #ASCENDING = 1 升序;DESCENDING = -1降序;default is ASCENDING
69. for item in coll.find().sort("age", pymongo.DESCENDING):
70. print item
72. count = coll.count()
73. print "集合中所有數據 %s個" % int(count)
75. #條件查詢
76. count = coll.find({"name":"quyang"}).count()
77. print "quyang: %s"%count
79. def clear_all_datas(db):
80. #清空一個集合中的所有數據
81. db["informations"].remove()
83. if __name__ == ‘__main__‘:
84. db = get_db()
85. my_collection = get_collection(db)
86. post = {"author": "Mike", "text": "My first blog post!", "tags": ["mongodb", "python", "pymongo"],
87. "date": datetime.datetime.utcnow()}
88. # 插入記錄
89. my_collection.insert(post)
90. insert_one_doc(db)
91. # 條件查詢
92. print my_collection.find_one({"x": "10"})
93. # 查詢表中所有的數據
94. for iii in my_collection.find():
95. print iii
96. print my_collection.count()
97. my_collection.update({"author": "Mike"},
98. {"author": "quyang", "text": "My first blog post!", "tags": ["mongodb", "python", "pymongo"],
99. "date": datetime.datetime.utcnow()})
100. for jjj in my_collection.find():
101. print jjj
102. get_one_doc(db)
103. get_one_by_id(db)
104. get_many_docs(db)
105. # clear_all_datas(db)

Python 使用pymongo操作mongodb庫