diff --git a/.github/label-pr.yml b/.github/label-pr.yml
new file mode 100644
index 0000000..540e35f
--- /dev/null
+++ b/.github/label-pr.yml
@@ -0,0 +1,32 @@
+- regExp: ".*\\.ts+$"
+  labels: ["typescript"]
+- regExp: ".*\\.sql+$"
+  labels: ["database", "critical"]
+- regExp: ".*/docs/"
+  labels: ["documentation"]
+- regExp: ".*\\.png+$"
+  labels: ["images"]
+- regExp: "^(pom\\.xml|package\\.json|build\\.gradle)$"
+  labels: ["dependencies"]
+- regExp: ".*/requirements.txt"
+  labels: ["dependencies"]
+- regExp: ".*\\.(zip|jar|war|ear)+$"
+  labels: ["artifact", "invalid"]
+- regExp: ".*/setup.py"
+  labels: ["build"]
+- regExp: "^.github/"
+  labels: ["github-workflow"]
+- regExp: "^nets/8r-1c-in-band-isis/"
+  labels: ["topology/8r-1c-in-band-isis"]
+- regExp: "^nets/8routers-isis-ipv6/"
+  labels: ["topology/8routers-isis-ipv6"]
+- regExp: "^nets-unmantained/8r-1c-out-band-isis/"
+  labels: ["topology/8r-1c-out-band-isis"]
+- regExp: "^nets-unmantained/3routers/"
+  labels: ["topology/3routers"]
+- regExp: "^nets-unmantained/8routers/"
+  labels: ["topology/8routers"]
+- regExp: "^nets-in-progress/8r-1c-srv6-pm/"
+  labels: ["topology/8r-1c-srv6-pm"]
+- regExp: ".*/.env"
+  labels: ["configuration"]
diff --git a/.github/pr-labeler.yml b/.github/pr-labeler.yml
new file mode 100644
index 0000000..d44b184
--- /dev/null
+++ b/.github/pr-labeler.yml
@@ -0,0 +1,3 @@
+feature: ['feature/*', 'feat/*', 'feature-*', 'feat-*']
+bug: ['fix/*', 'fix-*']
+chore: ['chore/*', 'chore-*']
diff --git a/.github/release-drafter.yml b/.github/release-drafter.yml
new file mode 100644
index 0000000..b1f5fa5
--- /dev/null
+++ b/.github/release-drafter.yml
@@ -0,0 +1,36 @@
+name-template: 'v$RESOLVED_VERSION 🌈'
+tag-template: 'v$RESOLVED_VERSION'
+categories:
+  - title: '🚀 Features'
+    labels:
+      - 'feature'
+      - 'enhancement'
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'fix'
+      - 'bugfix'
+      - 'bug'
+  - title: '🧰 Maintenance'
+    label: 'chore'
+change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
+version-resolver:
+  major:
+    labels:
+      - 'major'
+  minor:
+    labels:
+      - 'minor'
+      - 'feature'
+      - 'enhancement'
+  patch:
+    labels:
+      - 'patch'
+      - 'fix'
+      - 'bugfix'
+      - 'bug'
+  default: patch
+exclude-labels:
+  - 'skip-changelog'
+template: |
+  ## Changes
+  $CHANGES
diff --git a/.github/workflows/autopep8.yml b/.github/workflows/autopep8.yml
new file mode 100644
index 0000000..a1f5a06
--- /dev/null
+++ b/.github/workflows/autopep8.yml
@@ -0,0 +1,42 @@
+name: autopep8
+on: pull_request
+jobs:
+  autopep8:
+    # Check if the PR is not raised by this workflow and is not from a fork
+    if: startsWith(github.head_ref, 'autopep8-patches') == false && github.event.pull_request.head.repo.full_name == github.repository
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python 3
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install setuptools wheel flake8 pytest
+      - name: autopep8
+        id: autopep8
+        uses: peter-evans/autopep8@v1
+        with:
+          args: --exit-code --recursive --in-place --aggressive --aggressive .
+      - name: Set autopep8 branch name
+        id: vars
+        run: echo ::set-output name=branch-name::"autopep8-patches/$GITHUB_HEAD_REF"
+      - name: Create Pull Request
+        if: steps.autopep8.outputs.exit-code == 2
+        uses: peter-evans/create-pull-request@v2
+        with:
+          commit-message: autopep8 action fixes
+          committer: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
+          title: Fixes by autopep8 action
+          body: This is an auto-generated PR with fixes by autopep8.
+          labels: autopep8, automated pr
+          reviewers: cscarpitta
+          branch: ${{ steps.vars.outputs.branch-name }}
+      - name: Fail if autopep8 made changes
+        if: steps.autopep8.outputs.exit-code == 2
+        run: exit 1
diff --git a/.github/workflows/pr_labeler.yml b/.github/workflows/pr_labeler.yml
new file mode 100644
index 0000000..6747698
--- /dev/null
+++ b/.github/workflows/pr_labeler.yml
@@ -0,0 +1,27 @@
+# Workflow to associate labels automatically
+name: labeler
+
+# Trigger the workflow on pull request events
+on: [pull_request]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      # We need to checkout the repository to access the configured file (.github/label-pr.yml)
+      - uses: actions/checkout@v2
+      - name: Labeler
+        uses: docker://decathlon/pull-request-labeler-action:2.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # Here we can override the path for the action configuration. If none is provided, default one is `.github/label-pr.yml`
+          # CONFIG_PATH: ${{ secrets.GITHUB_WORKSPACE }}/.github/label-pr.yml
+
+  pr-labeler:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: TimonVS/pr-labeler-action@v3
+        # with:
+        #  configuration-path: .github/pr-labeler.yml # optional, .github/pr-labeler.yml is the default value
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
new file mode 100644
index 0000000..9d39e16
--- /dev/null
+++ b/.github/workflows/release-drafter.yml
@@ -0,0 +1,19 @@
+name: Release Drafter
+
+on:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - master
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5
+        # with:
+          # (Optional) specify config name to use, relative to .github/. Default: release-drafter.yml
+          # config-name: my-config.yml
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/nets-in-progress/8r-1c-srv6-pm/isis8d.py b/nets-in-progress/8r-1c-srv6-pm/isis8d.py
index 1a59fba..36b7fb0 100644
--- a/nets-in-progress/8r-1c-srv6-pm/isis8d.py
+++ b/nets-in-progress/8r-1c-srv6-pm/isis8d.py
@@ -20,7 +20,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -72,9 +72,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -86,13 +86,13 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.pid")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.pid")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.pid")
 
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
@@ -153,9 +153,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         # def remove_if_exists(filename):
@@ -171,8 +171,8 @@ def cleanup(self):
 # the add_link function creates a link and assigns the interface names
 # as node1-node2 and node2-node1
 def add_link(my_net, node1, node2):
-    my_net.addLink(node1, node2, intfName1=node1.name+'-'+node2.name,
-                   intfName2=node2.name+'-'+node1.name)
+    my_net.addLink(node1, node2, intfName1=node1.name + '-' + node2.name,
+                   intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -311,8 +311,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():
diff --git a/nets-unmantained/3routers/ospf3r.py b/nets-unmantained/3routers/ospf3r.py
index 1365135..339c365 100644
--- a/nets-unmantained/3routers/ospf3r.py
+++ b/nets-unmantained/3routers/ospf3r.py
@@ -16,7 +16,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -47,9 +47,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -61,11 +61,11 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/ospfd.pid")
-        remove_if_exists(BASEDIR+self.name+"/ospfd.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/ospfd.pid")
+        remove_if_exists(BASEDIR + self.name + "/ospfd.log")
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
         # if os.path.exists(BASEDIR+self.name+"/zebra.pid"):
@@ -96,8 +96,8 @@ def __init__(self, name, *args, **kwargs):
 
 
 def add_link(node1, node2):
-    Link(node1, node2, intfName1=node1.name+'-'+node2.name,
-         intfName2=node2.name+'-'+node1.name)
+    Link(node1, node2, intfName1=node1.name + '-' + node2.name,
+         intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -137,8 +137,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():
diff --git a/nets-unmantained/8r-1c-out-band-isis/isis8d.py b/nets-unmantained/8r-1c-out-band-isis/isis8d.py
index 337c5b3..e84b24f 100644
--- a/nets-unmantained/8r-1c-out-band-isis/isis8d.py
+++ b/nets-unmantained/8r-1c-out-band-isis/isis8d.py
@@ -20,7 +20,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -72,9 +72,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -86,13 +86,13 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.pid")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.pid")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.pid")
 
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
@@ -152,9 +152,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         # def remove_if_exists(filename):
@@ -170,8 +170,8 @@ def cleanup(self):
 # the add_link function creates a link and assigns the interface names
 # as node1-node2 and node2-node1
 def add_link(my_net, node1, node2):
-    my_net.addLink(node1, node2, intfName1=node1.name+'-'+node2.name,
-                   intfName2=node2.name+'-'+node1.name)
+    my_net.addLink(node1, node2, intfName1=node1.name + '-' + node2.name,
+                   intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -310,8 +310,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():
diff --git a/nets-unmantained/8routers/ospf8r.py b/nets-unmantained/8routers/ospf8r.py
index 9d36b00..37b28eb 100644
--- a/nets-unmantained/8routers/ospf8r.py
+++ b/nets-unmantained/8routers/ospf8r.py
@@ -18,7 +18,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -56,9 +56,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -70,13 +70,13 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/ospf6d.pid")
-        remove_if_exists(BASEDIR+self.name+"/ospf6d.log")
-        remove_if_exists(BASEDIR+self.name+"/ospfd.log")
-        remove_if_exists(BASEDIR+self.name+"/ospfd.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/ospf6d.pid")
+        remove_if_exists(BASEDIR + self.name + "/ospf6d.log")
+        remove_if_exists(BASEDIR + self.name + "/ospfd.log")
+        remove_if_exists(BASEDIR + self.name + "/ospfd.pid")
 
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
@@ -108,8 +108,8 @@ def __init__(self, name, *args, **kwargs):
 
 
 def add_link(my_net, node1, node2):
-    my_net.addLink(node1, node2, intfName1=node1.name+'-'+node2.name,
-                   intfName2=node2.name+'-'+node1.name)
+    my_net.addLink(node1, node2, intfName1=node1.name + '-' + node2.name,
+                   intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -226,8 +226,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():
diff --git a/nets/8r-1c-in-band-isis/isis8d.py b/nets/8r-1c-in-band-isis/isis8d.py
index bab25a3..fc2ec90 100644
--- a/nets/8r-1c-in-band-isis/isis8d.py
+++ b/nets/8r-1c-in-band-isis/isis8d.py
@@ -20,7 +20,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -72,9 +72,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -86,13 +86,13 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.pid")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.pid")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.pid")
 
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
@@ -131,8 +131,8 @@ def config(self, **kwargs):
 # the add_link function creates a link and assigns the interface names
 # as node1-node2 and node2-node1
 def add_link(my_net, node1, node2):
-    my_net.addLink(node1, node2, intfName1=node1.name+'-'+node2.name,
-                   intfName2=node2.name+'-'+node1.name)
+    my_net.addLink(node1, node2, intfName1=node1.name + '-' + node2.name,
+                   intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -254,8 +254,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():
diff --git a/nets/8routers-isis-ipv6/isis8d.py b/nets/8routers-isis-ipv6/isis8d.py
index 293b9ca..cfd1586 100644
--- a/nets/8routers-isis-ipv6/isis8d.py
+++ b/nets/8routers-isis-ipv6/isis8d.py
@@ -18,7 +18,7 @@
 from mininet.util import dumpNodeConnections
 
 # BASEDIR = "/home/user/mytests/ospf3routers/nodeconf/"
-BASEDIR = os.getcwd()+"/nodeconf/"
+BASEDIR = os.getcwd() + "/nodeconf/"
 OUTPUT_PID_TABLE_FILE = "/tmp/pid_table_file.txt"
 
 PRIVDIR = '/var/priv'
@@ -56,9 +56,9 @@ def config(self, **kwargs):
             #   first = False
             #   self.cmd('ip a a %s dev %s' %(kwargs['mgmtip'], intf.name))
         # let's write the hostname in /var/mininet/hostname
-        self.cmd("echo '" + self.name + "' > "+PRIVDIR+"/hostname")
-        if os.path.isfile(BASEDIR+self.name+"/start.sh"):
-            self.cmd('source %s' % BASEDIR+self.name+"/start.sh")
+        self.cmd("echo '" + self.name + "' > " + PRIVDIR + "/hostname")
+        if os.path.isfile(BASEDIR + self.name + "/start.sh"):
+            self.cmd('source %s' % BASEDIR + self.name + "/start.sh")
 
     def cleanup(self):
         def remove_if_exists(filename):
@@ -70,13 +70,13 @@ def remove_if_exists(filename):
         if os.path.exists(self.dir):
             shutil.rmtree(self.dir)
 
-        remove_if_exists(BASEDIR+self.name+"/zebra.pid")
-        remove_if_exists(BASEDIR+self.name+"/zebra.log")
-        remove_if_exists(BASEDIR+self.name+"/zebra.sock")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.pid")
-        remove_if_exists(BASEDIR+self.name+"/isis8d.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.log")
-        remove_if_exists(BASEDIR+self.name+"/isisd.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.pid")
+        remove_if_exists(BASEDIR + self.name + "/zebra.log")
+        remove_if_exists(BASEDIR + self.name + "/zebra.sock")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.pid")
+        remove_if_exists(BASEDIR + self.name + "/isis8d.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.log")
+        remove_if_exists(BASEDIR + self.name + "/isisd.pid")
 
         remove_if_exists(OUTPUT_PID_TABLE_FILE)
 
@@ -108,8 +108,8 @@ def __init__(self, name, *args, **kwargs):
 
 
 def add_link(my_net, node1, node2):
-    my_net.addLink(node1, node2, intfName1=node1.name+'-'+node2.name,
-                   intfName2=node2.name+'-'+node1.name)
+    my_net.addLink(node1, node2, intfName1=node1.name + '-' + node2.name,
+                   intfName2=node2.name + '-' + node1.name)
 
 
 def create_topo(my_net):
@@ -226,8 +226,8 @@ def stop_all():
 
 
 def extract_host_pid(dumpline):
-    temp = dumpline[dumpline.find('pid=')+4:]
-    return int(temp[:len(temp)-2])
+    temp = dumpline[dumpline.find('pid=') + 4:]
+    return int(temp[:len(temp) - 2])
 
 
 def simple_test():