Ali cloud OSS, python SDK QuickStart, including creating storage space, upload, download, list, delete files, etc.

# -*- coding: utf-8 -*-
	import os
	import shutil
	import oss2
	# The following code shows the basic file upload, download, list, delete usage.
	# First initialize AccessKeyId, AccessKeySecret, Endpoint and other information.
	# Get through the environment variable, or the like "<your AccessKeyId>" replaced with real AccessKeyId and so on.
	#
	# In Hangzhou area, for example, Endpoint can be:
	# http://oss-cn-hangzhou.aliyuncs.com
	# https://oss-cn-hangzhou.aliyuncs.com
	# Separate visits to HTTP, HTTPS protocol.
	access_key_id = os.getenv('OSS_TEST_ACCESS_KEY_ID', '<你的AccessKeyId>')
	access_key_secret = os.getenv('OSS_TEST_ACCESS_KEY_SECRET', '<你的AccessKeySecret>')
	bucket_name = os.getenv('OSS_TEST_BUCKET', '<你的Bucket>')
	Endpoint = os.getenv ( 'OSS_TEST_ENDPOINT ', '<your domain name visit> ')
	# To confirm the above parameters are correctly filled up
	for param in (access_key_id, access_key_secret, bucket_name, endpoint):
	Assert '< ' Not in param, 'set the parameters: ' + param
	# Create a Bucket Objects, Object all relevant interfaces can be carried out by Bucket objects
	bucket = oss2.Bucket(oss2.Auth(access_key_id, access_key_secret), endpoint, bucket_name)
	# Upload a string. Object name is motto.txt, was a famous content.
	bucket.put_object('motto.txt', 'Never give up. - Jack Ma')
	# Of obtaining metadata Object
	object_meta = bucket.get_object_meta ( 'your object name ')
	print('last modified: ' + object_meta.last_modified)
	print('etag: ' + object_meta.etag)
	print('size: ' + object_meta.content_length)
	# 下载到本地文件
	bucket.get_object_to_file('motto.txt', '本地文件名.txt')
	# 把刚刚上传的Object下载到本地文件 “座右铭.txt” 中
	# 因为get_object()方法返回的是一个file-like object，所以我们可以直接用shutil.copyfileobj()做拷贝
	with open(oss2.to_unicode('本地座右铭.txt'), 'wb') as f:
	shutil.copyfileobj(bucket.get_object('motto.txt'), f)
	# 把本地文件 “座右铭.txt” 上传到OSS，新的Object叫做 “我的座右铭.txt”
	# 注意到，这次put_object()的第二个参数是file object；而上次上传是一个字符串。
	# put_object()能够识别不同的参数类型
	with open(oss2.to_unicode('本地座右铭.txt'), 'rb') as f:
	bucket.put_object('云上座右铭.txt', f)
	# 上面两行代码，也可以用下面的一行代码来实现
	bucket.put_object_from_file('云上座右铭.txt', '本地座右铭.txt')
	# 列举Bucket下10个Object，并打印它们的最后修改时间、文件名
	for i, object_info in enumerate(oss2.ObjectIterator(bucket)):
	print("{0} {1}".format(object_info.last_modified, object_info.key))
	if i >= 9:
	break
	# 删除名为motto.txt的Object
	bucket.delete_object('motto.txt')
	# 也可以批量删除
	# 注意：重复删除motto.txt，并不会报错
	bucket.batch_delete_objects(['motto.txt', '云上座右铭.txt'])
	# 确认Object已经被删除了
	assert not bucket.object_exists('motto.txt')
	# 获取不存在的文件会抛出oss2.exceptions.NoSuchKey异常
	try:
	bucket.get_object('云上座右铭.txt')
	except oss2.exceptions.NoSuchKey as e:
	print(u'已经被删除了：request_id={0}'.format(e.request_id))
	else:
	assert False
	# 清除本地文件
	os.remove(u'本地文件名.txt')
	os.remove(u'本地座右铭.txt')