cleanup imports, first part

examples/barcodes.py

@@ -1,3 +1,8 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
 from escpos.printer import Usb
 
 

examples/codepage_tables.py

@@ -1,13 +1,16 @@
 """Prints code page tables.
 """
-
+from __future__ import absolute_import
+from __future__ import division
 from __future__ import print_function
+from __future__ import unicode_literals
 
-import six
 import sys
 
 from escpos import printer
-from escpos.constants import CODEPAGE_CHANGE, ESC, CTL_LF, CTL_FF, CTL_CR, CTL_HT, CTL_VT
+from escpos.constants import CODEPAGE_CHANGE, CTL_CR, CTL_FF, CTL_HT, CTL_LF, CTL_VT, ESC
+
+import six
 
 
 def main():

examples/qr_code.py

@@ -1,3 +1,8 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
 import sys
 
 from escpos.printer import Usb

examples/software_barcode.py

@@ -1,3 +1,8 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
 from escpos.printer import Usb
 
 

examples/weather.py

@@ -12,14 +12,17 @@
 # Icons taken from http://adamwhitcroft.com/climacons/
 # Check out his github: https://github.com/AdamWhitcroft/climacons
 
-
+from __future__ import absolute_import
+from __future__ import division
 from __future__ import print_function
-from datetime import datetime
+from __future__ import unicode_literals
+
 import calendar
-import urllib
 import json
-import time
 import os
+import time
+import urllib
+from datetime import datetime
 
 from escpos.printer import Usb