import reimport mechanize
（1）实例化一个浏览器对象br = mechanize.Browser()（2）打开一个网址
br.open("http://www.example.com/")（3）该网页下的满足text_regex的第2个链接
# follow second link with element text matching regular expressionresponse1 = br.follow_link(text_regex=r"cheese\s*shop", nr=1)assert br.viewing_html()（4）网页的名称
print br.title()（5）将网页的网址打印出来
print response1.geturl()（6）网页的头部
print response1.info()  # headers（7）网页的body
print response1.read()  # body
(8)选择body中的name =" order"的FORMbr.select_form(name="order")# Browser passes through unknown attributes (including methods)# to the selected HTMLForm.
(9)为name = cheeses的form赋值br["cheeses"] = ["mozzarella", "caerphilly"]  # (the method here is __setitem__)# Submit current form.  Browser calls .close() on the current response on# navigation, so this closes response1（10）提交
response2 = br.submit()# print currently selected form (don‘t call .submit() on this, use br.submit())print br.form（11）返回response3 = br.back()  # back to cheese shop (same data as response1)# the history mechanism returns cached response objects# we can still use the response, even though it was .close()d
response3.get_data()  # like .seek(0) followed by .read()（12）刷新网页
response4 = br.reload()  # fetches from server（13）这可以列出该网页下所有的Form
for form in br.forms():　　print form# .links() optionally accepts the keyword args of .follow_/.find_link()for link in br.links(url_regex="python.org"):print link    br.follow_link(link)  # takes EITHER Link instance OR keyword args    br.back()

br = mechanize.Browser()# Explicitly configure proxies (Browser will attempt to set good defaults).# Note the userinfo ("joe:password@") and port number (":3128") are optional.br.set_proxies({"http": "joe:password@myproxy.example.com:3128","ftp": "proxy.example.com", })# Add HTTP Basic/Digest auth username and password for HTTP proxy access.# (equivalent to using "joe:password@..." form above)
br.add_proxy_password("joe", "password")
# Add HTTP Basic/Digest auth username and password for website access.br.add_password("http://example.com/protected/", "joe", "password")
# Don‘t handle HTTP-EQUIV headers (HTTP headers embedded in HTML).br.set_handle_equiv(False)
# Ignore robots.txt.  Do not do this without thought and consideration.br.set_handle_robots(False)
# Don‘t add Referer (sic) headerbr.set_handle_referer(False)
# Don‘t handle Refresh redirectionsbr.set_handle_refresh(False)
# Don‘t handle cookiesbr.set_cookiejar()
# Supply your own mechanize.CookieJar (NOTE: cookie handling is ON by# default: no need to do this unless you have some reason to use a# particular cookiejar)br.set_cookiejar(cj)
# Log information about HTTP redirects and Refreshes.br.set_debug_redirects(True)
# Log HTTP response bodies (ie. the HTML, most of the time).br.set_debug_responses(True)
# Print HTTP headers.br.set_debug_http(True)# To make sure you‘re seeing all debug output:logger = logging.getLogger("mechanize")logger.addHandler(logging.StreamHandler(sys.stdout))logger.setLevel(logging.INFO)# Sometimes it‘s useful to process bad headers or bad HTML:response = br.response()  # this is a copy of responseheaders = response.info()  # currently, this is a mimetools.Messageheaders["Content-type"] = "text/html; charset=utf-8"response.set_data(response.get_data().replace("<!---", "<!--"))br.set_response(response)