Try to install python2 and python3 mininet (#1008)

util/install.sh

@@ -183,8 +183,8 @@ function mn_deps {
                  ${PYPKG}-pexpect ${PYPKG}-tk
         # Install pip
         $install ${PYPKG}-pip || $install ${PYPKG}-pip-whl
-        if ! ${PYTHON} -m pip; then
-            curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
+        if ! ${PYTHON} -m pip -V; then
+            wget https://bootstrap.pypa.io/get-pip.py
             sudo ${PYTHON} get-pip.py
             rm get-pip.py
         fi

util/vm/build.py

@@ -638,7 +638,8 @@ def checkOutBranch( vm, branch, prompt=Prompt ):
     vm.sendline( 'util/install.sh -n' )
 
 
-def interact( vm, tests, pre='', post='', prompt=Prompt ):
+def interact( vm, tests, pre='', post='', prompt=Prompt,
+              clean=True):
     "Interact with vm, which is a pexpect object"
     login( vm )
     log( '* Waiting for login...' )
@@ -677,6 +678,10 @@ def interact( vm, tests, pre='', post='', prompt=Prompt ):
     vm.sendline( "sudo sed -i -e 's/^GRUB_TERMINAL=serial/#GRUB_TERMINAL=serial/' "
                 "/etc/default/grub; sudo update-grub" )
     vm.expect( prompt )
+    if clean:
+        log( '* Cleaning vm' )
+        vm.sendline( '~/mininet/util/install.sh -d' )
+    vm.expect( prompt )
     log( '* Shutting down' )
     vm.sendline( 'sync; sudo shutdown -h now' )
     log( '* Waiting for EOF/shutdown' )

util/vm/install-mininet-vm.sh

@@ -24,7 +24,7 @@ if [ -e /etc/rc.local.backup ]; then
     sudo mv /etc/rc.local.backup /etc/rc.local
 fi
 # Fetch Mininet
-sudo apt-get -y install git-core openssh-server
+sudo apt-get -y -qq install git-core openssh-server
 git clone git://github.com/mininet/mininet
 # Optionally check out branch
 if [ "$1" != "" ]; then
@@ -33,8 +33,14 @@ if [ "$1" != "" ]; then
     git checkout $1
     popd
 fi
-# Install Mininet
-time mininet/util/install.sh
+# Install Mininet for Python2 and Python3
+APT="sudo apt-get -y -qq"
+$APT install python3
+$APT install python-is-python3 || true
+$APT install python2 || $APT install python
+python --version
+time PYTHON=python3 mininet/util/install.sh
+time PYTHON=python2 mininet/util/install.sh -n
 # Finalize VM
 time mininet/util/install.sh -tcd
 # Ignoring this since NOX classic is deprecated