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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def build_uri(secret, name, initial_count=None, issuer_name=None):
 """ Returns the provisioning URI for the OTP; works for either TOTP or HOTP. This can then be encoded in a QR Code and used to provision the Google Authenticator app. For module-internal use. See also: http://code.google.com/p/google-authenticator/wiki/KeyUriFormat @param [String] the hotp/totp secret used to generate the URI @param [String] name of the account @param [Integer] initial_count starting counter value, defaults to None. If none, the OTP type will be assumed as TOTP. @param [String] the name of the OTP issuer; this will be the organization title of the OTP entry in Authenticator @return [String] provisioning uri """

    # initial_count may be 0 as a valid param
    is_initial_count_present = (initial_count is not None)

    otp_type = 'hotp' if is_initial_count_present else 'totp'
    base = 'otpauth://%s/' % otp_type

    if issuer_name:
        issuer_name = quote(issuer_name)
        base += '%s:' % issuer_name

    uri = '%(base)s%(name)s?secret=%(secret)s' % {
        'name': quote(name, safe='@'),
        'secret': secret,
        'base': base,
    }

    if is_initial_count_present:
        uri += '&counter=%s' % initial_count

    if issuer_name:
        uri += '&issuer=%s' % issuer_name

    return uri