more Python3 compatibility

bin/check_all.sh

@@ -102,9 +102,9 @@ while true; do
 	python_ver=$($python_bin -V 2>&1 | grep -Po '(?<=Python )(.+)')
 	if [[ -z "$python_ver" ]] || [[ ! $python_ver =~ ^3\.[56789].* ]] ; then
 		echo "Error! Python 3.5 or later is required. It should be installed and added to the PATH!"
-		install_package python2
+		install_package python3
 		if [ "${machine}" = "linux" ] ; then
-			install_package python2-dev
+			install_package python3-dev
 		fi
 	else
 		break

bin/copy_from_Kicad.py

@@ -13,7 +13,7 @@ import glob, shutil
 # also recognized by JLCPCB: https://support.jlcpcb.com/article/29-suggested-naming-patterns
 
 if len(sys.argv) < 5:
-    print "Error! Please specify the project type, base folder, gerber folder, name and rev."
+    print ("Error! Please specify the project type, base folder, gerber folder, name and rev.")
     sys.exit(1)
 type = sys.argv[1]
 project_base = sys.argv[2]

bin/export_kicad_module_footprint.py

@@ -9,7 +9,7 @@ import csv, re
 import glob, shutil
 
 if len(sys.argv) < 4:
-	print "Error! Please specify the module project folder, module name and rev."
+	print ("Error! Please specify the module project folder, module name and rev.")
 	sys.exit(1)
 project_base = sys.argv[1]
 name = sys.argv[2]

bin/requirements.txt

@@ -0,0 +1,12 @@
+cairocffi==1.3.0
+contextlib2==21.6.0
+moderngl==5.6.4
+numpy==1.22.3
+Pillow==9.0.1
+PyPDF2==1.26.0
+pyrr==0.10.3
+pytest==7.1.1
+PyVRML97==2.3.1
+setuptools==45.2.0
+SimpleParse==2.2.2
+tsp_solver==0.1