urllib.error.URLError:

Question

(Python 3.4.2) I\'ve got a weird error when I run \'urllib.request.urlopen(url)\' inside of a script. If I run it directly in the Python interpreter, it works fine, but not

Answer 1

people who encountered the error ValueError: unknown url type: 'http or ValueError: unknown url type: b'http

while opening some url like below with urllib.request.Request 'http://localhost/simple_form/insert.php'

just change localhost to 127.0.0.1

looks like Request method is looking for a domain.something in url

Answer 2

I figured it out. My url had a : in it, and urllib cannot use that character. I replaced it with %3A and now it's working. Web browsers usually convert : to %3A automatically, but urllib requires it to be converted first.

Answer 3

You should use urllib.parse.urlencode(), urllib.parse.urljoin(), etc functions to construct urls instead of manually joining the strings. It would take care of : -> %3A conversion e.g.:

>>> import urllib.parse
>>> urllib.parse.quote(':')
'%3A'

Answer 4

may due to openssl-devel if you do not install it.

yum list installed|grep openssl

install it and try again after make.

sudo yum install openssl-devel
./configure
make