How to use the safety.util.read_requirements function in safety

def check(key, db, json, full_report, bare, stdin, files, cache, ignore, output, proxyprotocol, proxyhost, proxyport):
    if files and stdin:
        click.secho("Can't read from --stdin and --file at the same time, exiting", fg="red", file=sys.stderr)
        sys.exit(-1)

    if files:
        packages = list(itertools.chain.from_iterable(read_requirements(f, resolve=True) for f in files))
    elif stdin:
        packages = list(read_requirements(sys.stdin))
    else:
        import pkg_resources
        packages = [
            d for d in pkg_resources.working_set
            if d.key not in {"python", "wsgiref", "argparse"}
        ]    
    proxy_dictionary = {}
    if proxyhost is not None:
        if proxyprotocol in ["http", "https"]:
            proxy_dictionary = {proxyprotocol: "{0}://{1}:{2}".format(proxyprotocol, proxyhost, str(proxyport))}
        else:
            click.secho("Proxy Protocol should be http or https only.", fg="red")
            sys.exit(-1)
    try:

def check(key, db, json, full_report, bare, stdin, files, cache, ignore, output, proxyprotocol, proxyhost, proxyport):
    if files and stdin:
        click.secho("Can't read from --stdin and --file at the same time, exiting", fg="red", file=sys.stderr)
        sys.exit(-1)

    if files:
        packages = list(itertools.chain.from_iterable(read_requirements(f, resolve=True) for f in files))
    elif stdin:
        packages = list(read_requirements(sys.stdin))
    else:
        import pkg_resources
        packages = [
            d for d in pkg_resources.working_set
            if d.key not in {"python", "wsgiref", "argparse"}
        ]    
    proxy_dictionary = {}
    if proxyhost is not None:
        if proxyprotocol in ["http", "https"]:
            proxy_dictionary = {proxyprotocol: "{0}://{1}:{2}".format(proxyprotocol, proxyhost, str(proxyport))}
        else:
            click.secho("Proxy Protocol should be http or https only.", fg="red")
            sys.exit(-1)
    try:
        vulns = safety.check(packages=packages, key=key, db_mirror=db, cached=cache, ignore_ids=ignore, proxy=proxy_dictionary)
        output_report = report(vulns=vulns,

def check(key, db, json, full_report, bare, stdin, files, cache, ignore, output, proxyprotocol, proxyhost, proxyport):
    if files and stdin:
        click.secho("Can't read from --stdin and --file at the same time, exiting", fg="red", file=sys.stderr)
        sys.exit(-1)

    if files:
        packages = list(itertools.chain.from_iterable(read_requirements(f, resolve=True) for f in files))
    elif stdin:
        packages = list(read_requirements(sys.stdin))
    else:
        import pkg_resources
        packages = [
            d for d in pkg_resources.working_set
            if d.key not in {"python", "wsgiref", "argparse"}
        ]    
    proxy_dictionary = {}
    if proxyhost is not None:
        if proxyprotocol in ["http", "https"]:
            proxy_dictionary = {proxyprotocol: "{0}://{1}:{2}".format(proxyprotocol, proxyhost, str(proxyport))}
        else:
            click.secho("Proxy Protocol should be http or https only.", fg="red")
            sys.exit(-1)
    try:

def check(key, db, json, full_report, bare, stdin, files, cache, ignore, output, proxyprotocol, proxyhost, proxyport):
    if files and stdin:
        click.secho("Can't read from --stdin and --file at the same time, exiting", fg="red", file=sys.stderr)
        sys.exit(-1)

    if files:
        packages = list(itertools.chain.from_iterable(read_requirements(f, resolve=True) for f in files))
    elif stdin:
        packages = list(read_requirements(sys.stdin))
    else:
        import pkg_resources
        packages = [
            d for d in pkg_resources.working_set
            if d.key not in {"python", "wsgiref", "argparse"}
        ]    
    proxy_dictionary = {}
    if proxyhost is not None:
        if proxyprotocol in ["http", "https"]:
            proxy_dictionary = {proxyprotocol: "{0}://{1}:{2}".format(proxyprotocol, proxyhost, str(proxyport))}
        else:
            click.secho("Proxy Protocol should be http or https only.", fg="red")
            sys.exit(-1)
    try:
        vulns = safety.check(packages=packages, key=key, db_mirror=db, cached=cache, ignore_ids=ignore, proxy=proxy_dictionary)
        output_report = report(vulns=vulns,