human
Solve the following python programming problem given the following code:
def check_requirements(requirement_files, strict = False, error_on_extras = False, verbose = False, venv = None, do_colour = False) : 
    '
    Given a list of requirements files, checks them against the installed
    packages in the currentl environment. If any are missing, or do not fit
    within the version bounds, exits with a code of 1 and outputs information
    about the missing dependency.
    ' 
    colour = TextColours (do_colour) 
    version_re = re.compile ('^([^<>=\\s#]+)\\s*(>=|>|<|<=|==|===)?\\s*([^<>=\\s#]+)?(?:\\s*#.*)?$') 
    def parse_package_line(line) : 
        try : 
            if line.startswith ('-e') : 
                return parse_checkout_line (line) 
(package, compare, version) = version_re.split (line) [1 : (- 1)] 
except ValueError : 
            raise ValueError (('Unknown package line format: %r' % line)) 
return (package, (compare or None), (parse_version (version) if version else None), line) 
def parse_checkout_line(whole_line) : 
        "
        parse a line that starts with '-e'

        e.g.,
        -e git://github.com/jcrocholl/pep8.git@bb20999aefc394fb826371764146bf61d8e572e2#egg=pep8-dev
        " 
        line = whole_line [2 :].lstrip () 
        if ('@' in line) : 
            (url, last_bit) = line.rsplit ('@', 1) 
            (rev, eggname) = last_bit.split ('#', 1) 
            return (url, '==', rev, line) 
else : 
            (url, eggname) = line.split ('#') 
            return (url, None, None, line) 
def is_requirements_line(line) : 
        '
        line is a valid requirement in requirements file or pip freeze output
        ' 
        if (not line) : 
            return False 
if line.startswith ('#') : 
            return False 
if line.endswith (' # optional') : 
            return False 
if line.startswith ('-e') : 
            return True 
if line.startswith ('-') : 
            return False 
if (line.startswith ('http://') or line.startswith ('https://')) : 
            return False 
return True 
def valid_version(version, compare,...

    
    

    Fix the buggy line: included_files.append (os.path.join (r_package, line [2 :].lstrip ()))
assistant
#Here is Python program to fix the buggy line: included_files.

included_files.append (os.path.join (path, line [2 :].lstrip ()))