Mechanize._response.httperror_seek_wrapper: HTTP Error refresh: The HTTP server returned a redirect error that would lead to an infinite loop.

Question

[ShahiRB]

I will be thankful for helping me to solve this error.

My code is:

url='http://www.ncbi.nlm.nih.gov/tools/primer-blast/'

# Browser
br = mechanize.Browser()
cj = cookielib.LWPCookieJar()
br.set_cookiejar(cj)

# Browser options
br.set_handle_equiv(True)
br.set_handle_redirect(True)
br.set_handle_referer(True)
#br.set_handle_refresh(True, max_time=1, honor_time=False)
br.set_handle_robots(False)
br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)
# br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]

# Want debugging messages?
#br.set_debug_http(True)
# br.set_debug_redirects(True)
#br.set_debug_responses(True)

br.open(url)
br.select_form(name="searchForm")

br.form.find_control(name="INPUT_SEQUENCE").__setattr__("value", str(sequence))
br.form.find_control(name='PRIMER5_START').__setattr__("value",str(primer5_start))
br.form.find_control(name='PRIMER5_END').__setattr__("value",str(primer5_end))
br.form.find_control(name='PRIMER3_START').__setattr__("value",str(primer3_start))
br.form.find_control(name='PRIMER3_END').__setattr__("value",str(primer3_end))
br.form.find_control(name='PRIMER_PRODUCT_MAX').__setattr__("value",str(max_product_size))
br.form.find_control(name='PRIMER_SPECIFICITY_DATABASE').items[2].selected = True
br.submit()
br.select_form(name="userGuidedForm)
br.form.find_control(name="USER_SEQLOC").items[0].selected = True
br.submit()
print br.response().read()

And the error is:

 File "./FIELT21_primer_1_generate_primer_v0.2.py", line 282, in <module>
    main()
  File "./FIELT21_primer_1_generate_primer_v0.2.py", line 224, in main
    str(400))
  File "./FIELT21_primer_1_generate_primer_v0.2.py", line 163, in scrap
    br.submit()
  File "/usr/lib/python2.7/site-packages/mechanize/_mechanize.py", line 541, in submit
    return self.open(self.click(*args, **kwds))
  File "/usr/lib/python2.7/site-packages/mechanize/_mechanize.py", line 203, in open
    return self._mech_open(url, data, timeout=timeout)
  File "/usr/lib/python2.7/site-packages/mechanize/_mechanize.py", line 255, in _mech_open
    raise response
mechanize._response.httperror_seek_wrapper: HTTP Error refresh: The HTTP server returned a redirect error that would lead to an infinite loop.
The last 30x error message was:
OK

Thanx

[38472617]

Hello! I am having the same problem, could you fix it?

[ShahiRB]

Hi, it was many years back. I forgot it how did I solve the issue. Now, I don't have the script with me to review (sad). You can try to take help from https://groups.google.com/g/www-mechanize-users or create a issue here https://github.com/python-mechanize/mechanize/issues. If I come across my old script I will certainly update you. KR, Raj

[38472617]

(so sad) anyway thanks for your help. I will consider your recommendations and hope you can find your script :)