Why doesn't requests.get() return? What is the default timeout that requests.get() uses?

In my script, requests.get never returns:

import requests

print ("requesting..")

# This call never returns!
r = requests.get(
    "http://www.some-site.com",
    proxies = {'http': '222.255.169.74:8080'},
)

print(r.ok)

What could be the possible reason(s)? Any remedy? What is the default timeout that get uses?

What is the default timeout that get uses?

The default timeout is None, which means it'll wait (hang) until the connection is closed.

Just specify a timeout value, like this:

r = requests.get(
    'http://www.justdial.com',
    proxies={'http': '222.255.169.74:8080'},
    timeout=5
)

From requests documentation:

You can tell Requests to stop waiting for a response after a given number of seconds with the timeout parameter:

>>> requests.get('http://github.com', timeout=0.001)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
requests.exceptions.Timeout: HTTPConnectionPool(host='github.com', port=80): Request timed out. (timeout=0.001)

Note:

timeout is not a time limit on the entire response download; rather, an exception is raised if the server has not issued a response for timeout seconds (more precisely, if no bytes have been received on the underlying socket for timeout seconds).

It happens a lot to me that requests.get() takes a very long time to return even if the timeout is 1 second. There are a few way to overcome this problem:

1. Use the TimeoutSauce internal class

From: https://github.com/kennethreitz/requests/issues/1928#issuecomment-35811896

import requests from requests.adapters import TimeoutSauce

class MyTimeout(TimeoutSauce):
    def __init__(self, *args, **kwargs):
        if kwargs['connect'] is None:
            kwargs['connect'] = 5
        if kwargs['read'] is None:
            kwargs['read'] = 5
        super(MyTimeout, self).__init__(*args, **kwargs)

requests.adapters.TimeoutSauce = MyTimeout

This code should cause us to set the read timeout as equal to the connect timeout, which is the timeout value you pass on your Session.get() call. (Note that I haven't actually tested this code, so it may need some quick debugging, I just wrote it straight into the GitHub window.)

2. Use a fork of requests from kevinburke: https://github.com/kevinburke/requests/tree/connect-timeout

From its documentation: https://github.com/kevinburke/requests/blob/connect-timeout/docs/user/advanced.rst

If you specify a single value for the timeout, like this:

r = requests.get('https://github.com', timeout=5)

The timeout value will be applied to both the connect and the read timeouts. Specify a tuple if you would like to set the values separately:

r = requests.get('https://github.com', timeout=(3.05, 27))

NOTE: The change has since been merged to the main Requests project.

3. Using evenlet or signal as already mentioned in the similar question: Timeout for python requests.get entire response

I wanted a default timeout easily added to a bunch of code (assuming that timeout solves your problem)

This is the solution I picked up from a ticket submitted to the repository for Requests.

credit: https://github.com/kennethreitz/requests/issues/2011#issuecomment-477784399

The solution is the last couple of lines here, but I show more code for better context. I like to use a session for retry behaviour.

import requests
import functools
from requests.adapters import HTTPAdapter,Retry


def requests_retry_session(
        retries=10,
        backoff_factor=2,
        status_forcelist=(500, 502, 503, 504),
        session=None,
        ) -> requests.Session:
    session = session or requests.Session()
    retry = Retry(
            total=retries,
            read=retries,
            connect=retries,
            backoff_factor=backoff_factor,
            status_forcelist=status_forcelist,
            )
    adapter = HTTPAdapter(max_retries=retry)
    session.mount('http://', adapter)
    session.mount('https://', adapter)
    # set default timeout
    for method in ('get', 'options', 'head', 'post', 'put', 'patch', 'delete'):
        setattr(session, method, functools.partial(getattr(session, method), timeout=30))
    return session

then you can do something like this:

requests_session = requests_retry_session()
r = requests_session.get(url=url,...