Fix crash on lsof on python3

.gitignore

@@ -9,4 +9,4 @@ sass/scss
 *.egg-info/
 build/
 .cache/
-.env/
+.env*

Makefile

@@ -4,9 +4,9 @@ include Makefile.config
 all: install lint check-outdated run-debug
 
 install:
-	test -d $(VENV) || virtualenv $(VENV)
-	$(PIP) install --upgrade --no-cache pip setuptools -e .[lint] devcore
-	$(NPM) install
+	test -d $(VENV) || virtualenv $(VENV) -p $(PYTHON_VERSION)
+	# $(PIP) install --upgrade --no-cache pip setuptools -e .[lint] devcore
+	# $(NPM) install
 
 clean:
 	rm -fr $(NODE_MODULES)

Makefile.config

@@ -1,7 +1,8 @@
 PROJECT_NAME = butterfly
 
 # Python env
-VENV = $(PWD)/.env
+PYTHON_VERSION ?= python
+VENV = $(PWD)/.env$(if $(filter $(PYTHON_VERSION),python),,-$(PYTHON_VERSION))
 PIP = $(VENV)/bin/pip
 PYTHON = $(VENV)/bin/python
 PYTEST = $(VENV)/bin/py.test

butterfly/utils.py

@@ -168,7 +168,7 @@ def get_lsof_socket_line(addr, port):
     # May want to make this into a dictionary in the future...
     regex = "\w+\s+(?P<pid>\d+)\s+(?P<user>\w+).*\s" \
             "(?P<laddr>.*?):(?P<lport>\d+)->(?P<raddr>.*?):(?P<rport>\d+)"
-    output = subprocess.check_output(['lsof', '-Pni'])
+    output = subprocess.check_output(['lsof', '-Pni']).decode('utf-8')
     lines = output.split('\n')
     for line in lines:
         # Look for local address with peer port