urllib3

What is the practical difference between these two ways of making web connections in Python?

若如初见. 提交于 2019-12-03 21:29:10
I have notice there are several ways to iniciate http connections for web scrapping. I am not sure if some are more recent and up-to-date ways of coding, or if they are just different modules with different advantages and disadvantages. More specifically, I am trying to understand what are the differences between the following two approaches, and what would you reccomend? 1) Using urllib3: http = PoolManager() r = http.urlopen('GET', url, preload_content=False) soup = BeautifulSoup(r, "html.parser") 2) Using requests html = requests.get(url).content soup = BeautifulSoup(html, "html5lib") What

Why do I constantly see “Resetting dropped connection” when uploading data to my database?

北战南征 提交于 2019-12-03 10:24:41
I'm uploading hundreds of millions of items to my database via a REST API from a cloud server on Heroku to a database in AWS EC2. I'm using Python and I am constantly seeing the following INFO log message in the logs. [requests.packages.urllib3.connectionpool] [INFO] Resetting dropped connection: <hostname> This "resetting of the dropped connection" seems to take many seconds (sometimes 30+ sec) before my code continues to execute again. Firstly what exactly is happening here and why? Secondly is there a way to stop the connection from dropping so that I am able to upload data faster? Thanks

What's the best way to download file using urllib3

给你一囗甜甜゛ 提交于 2019-12-03 09:04:19
问题 I would like to download file over HTTP protocol using urllib3 . I have managed to do this using following code: url = 'http://url_to_a_file' connection_pool = urllib3.PoolManager() resp = connection_pool.request('GET',url ) f = open(filename, 'wb') f.write(resp.data) f.close() resp.release_conn() But I was wondering what is the proper way of doing this. For example will it work well for big files and If no what to do to make this code more bug tolerant and scalable. Note. It is important to

How to get urllib3 and requests working with jython 2.7 beta 1?

て烟熏妆下的殇ゞ 提交于 2019-12-03 08:10:24
Smart folks, I would like to use the awesome requests module in my jython program. It installs and runs just fine in python but I cannot get it to install in jython. I have tried both Jython 2.7a2 and 2.7b1 on mac and ubuntu and get the same errors related to urllib3. First installed ez_setup.py as mentioned in How can I use jython setup.py install? Then run easy_install from within the jython bin directory results in exception: NameError: name 'CERT_NONE' is not defined gautam-mbp:bin gautam$ ./easy_install requests Searching for requests Reading http://pypi.python.org/simple/requests/

Patch pyopenssl for sslv3 issue

我怕爱的太早我们不能终老 提交于 2019-12-03 06:13:41
问题 I got a problem on a Debian 8 system with python 2.7.9-2 amd64: marius@pydev:/usr/lib/python2.7/dist-packages/urllib3/contrib$ pip search doo Traceback (most recent call last): File "/usr/bin/pip", line 9, in <module> load_entry_point('pip==1.5.6', 'console_scripts', 'pip')() File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 356, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2476, in

What's the best way to download file using urllib3

眉间皱痕 提交于 2019-12-02 23:22:13
I would like to download file over HTTP protocol using urllib3 . I have managed to do this using following code: url = 'http://url_to_a_file' connection_pool = urllib3.PoolManager() resp = connection_pool.request('GET',url ) f = open(filename, 'wb') f.write(resp.data) f.close() resp.release_conn() But I was wondering what is the proper way of doing this. For example will it work well for big files and If no what to do to make this code more bug tolerant and scalable. Note. It is important to me to use urllib3 library not urllib2 for example, because I want my code to be thread safe. Your code

Patch pyopenssl for sslv3 issue

限于喜欢 提交于 2019-12-02 18:42:29
I got a problem on a Debian 8 system with python 2.7.9-2 amd64: marius@pydev:/usr/lib/python2.7/dist-packages/urllib3/contrib$ pip search doo Traceback (most recent call last): File "/usr/bin/pip", line 9, in <module> load_entry_point('pip==1.5.6', 'console_scripts', 'pip')() File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 356, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2476, in load_entry_point return ep.load() File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2190,

What should I use to open a url instead of urlopen in urllib3

给你一囗甜甜゛ 提交于 2019-12-02 16:08:22
I wanted to write a piece of code like the following: from bs4 import BeautifulSoup import urllib2 url = 'http://www.thefamouspeople.com/singers.php' html = urllib2.urlopen(url) soup = BeautifulSoup(html) But I found that I have to install urllib3 package now. Moreover, I couldn't find any tutorial or example to understand how to rewrite the above code, for example, urllib3 does not have urlopen . Any explanation or example, please?! P/S: I'm using python 3.4. urllib3 is a different library from urllib and urllib2. It has lots of additional features to the urllibs in the standard library, if

Obnoxious CryptographyDeprecationWarning because of missing hmac.compare_time function everywhere

血红的双手。 提交于 2019-12-01 05:39:20
Things were running along fine until one of my projects started printing this everywhere, at the top of every execution, at least once: local/lib/python2.7/site-packages/cryptography/hazmat/primitives/constant_time.py:26: CryptographyDeprecationWarning: Support for your Python version is deprecated. The next version of cryptography will remove support. Please upgrade to a 2.7.x release that supports hmac.compare_digest as soon as possible. I have no idea why it started and it's disrupting the applications'/tools' output, especially when it's being captured and consumed by other tools. Like

RequestsDependencyWarning: urllib3 (1.9.1) or chardet (2.3.0) doesn't match a supported version

梦想与她 提交于 2019-12-01 02:08:58
I found several pages about this issue but none of them solved my problem. Even if I do a : pip show I get : /usr/local/lib/python2.7/dist-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.9.1) or chardet (2.3.0) doesn't match a supported version! RequestsDependencyWarning) Traceback (most recent call last): File "/usr/bin/pip", line 9, in <module> load_entry_point('pip==1.5.6', 'console_scripts', 'pip')() File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 480, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File