Installing python clients for python3

[SmithSamuelM]

The formula on installs clients for python2 not python3

Found this comment

Python3 is supported in the latest code from git (f79e9a8). Pass PYTHON=/usr/bin/python3 to configure to select Python3. Similarly, PYTHON=/usr/bin/python2, selects Python 2. When switching between them, a make dist-clean is necessary before configuring.

Consequently
I tried modifying the formula as follows but get the error below

class Hyperdex < Formula
  homepage 'http://hyperdex.org'
  url 'http://hyperdex.org/src/hyperdex-1.4.4.tar.gz'
  sha1 'c5b126fc7862de66eab54fa5ef3c7cbb84b2bc9b'

  depends_on 'autoconf'
  depends_on 'automake'
  depends_on 'autoconf-archive'
  depends_on 'libtool'
  depends_on 'pkg-config'

  depends_on 'popt'
  depends_on 'glog'
  depends_on 'google-sparsehash'
  depends_on 'json-c'
  depends_on 'libpo6'
  depends_on 'libe'
  depends_on 'busybee'
  depends_on 'hyperleveldb'
  depends_on 'replicant'

  option 'with-python-bindings', "Builds and installs Python client bindings"
  option 'with-java-bindings', "Builds and installs Java client bindings"
  option 'with-ruby-bindings', "Builds and installs Ruby client bindings"
  option 'with-python3', "Python client bindings use /usr/local/bin/python3"

  def patches
    DATA
  end

  def install
    ENV['PKG_CONFIG_PATH']="#{HOMEBREW_PREFIX}/lib/pkgconfig"
    args = []
    args << "--enable-java-bindings" if build.with? "java-bindings"
    args << "--enable-python-bindings" if build.with? "python-bindings"
    args << "--enable-ruby-bindings" if build.with? "ruby-bindings"
    args << "PYTHON=/usr/local/bin/python3" if build.with? "python3"

    system "./configure", "--prefix=#{prefix}", *args
    system "make"
    system "make install"
  end
end

installed in some non-standard library path. If so, pass it to configure,
via the LDFLAGS environment variable.
Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"

any idea how to fix it.