Need regex help: Match if certain string doesn't start with certain sub-patterns AND certain character should not be there

I need to come up with a regular expression for a mini-project.

The string should not start with:

"/wiki"

and it should also not have the following pattern "/.*:.*" (basically pattern starts with char '/' and there is any occurrence of ':' after that)

and it also cannot have a certa开发者_运维百科in character '#'

So basically all these strings would fail:

"/wiki/index.php?title=ROM/TAP&action=edit&section=2"
"/User:romamns"
"/Special:Watchlist"
"/Space_Wiki:Privacy_policy"
"#column-one"

And all these string would pass:

"/ROM/TAP/mouse"
"http://www.boost.org/"

I will be using the regex in python (if that makes any difference).

Thanks for any help.

^(/(?!wiki)[^:#]*|[^#/][^#]*)$ should be ok, as tested here, of course I might be missing something, but this appears to follow your specification.

This tested script implements a commented regex which precisely matches your stated requirements:

import re
def check_str(subject):
    """Retturn True if subject matches"""

    reobj = re.compile(
        """               # Match special string
        (?!/wiki)         # Does not start with /wiki.
        (?![^/]*/[^:]*:)  # Does not have : following /
        [^#]*             # Match whole string having no #
        $                 # Anchor to end of string.
        """, 
        re.IGNORECASE | re.MULTILINE | re.VERBOSE)
    if reobj.match(subject):
        return True
    else:
        return False
        return False

data_list = [
    r"/wiki/index.php?title=ROM/TAP&action=edit&section=2",
    r"/User:romamns",
    r"/Special:Watchlist",
    r"/Space_Wiki:Privacy_policy",
    r"#column-one",
    r"/ROM/TAP/mouse",
    r"http://www.boost.org/",
    ]
cnt = 0
for data in data_list:
    cnt += 1
    print("Data[%d] = \"%s\"" %
      (cnt, check_str(data)))

If you match the following regular expression, then it should fail

^(\/wiki|.*?[\:#])