REFACTOR fix minor PEP8 and similar mistakes

escpos/cli.py

@@ -46,9 +46,11 @@ __license__ = "MIT"
 import re
 
 from escpos import printer
+
 epson = printer.Usb(0x0416, 0x5011)
 # TODO: Un-hardcode this
 
+
 def _print_text_file(path):
     """Print the given text file"""
     epson.set(align='left')
@@ -56,10 +58,12 @@ def _print_text_file(path):
         for line in fobj:
             epson.text(line)
 
+
 def _print_image_file(path):
     """Print the given image file."""
     epson.fullimage(path, histeq=False, width=384)
 
+
 def print_files(args):
     """The 'print' subcommand"""
     for path in args.paths:
@@ -74,6 +78,7 @@ def print_files(args):
 KNOWN_BARCODE_TYPES = ['UPC-A', 'UPC-E', 'EAN13', 'ITF']
 re_barcode_escape = re.compile(r'^%(?P<type>\S+)\s(?P<data>[0-9X]+)$')
 
+
 def echo(args):  # pylint: disable=unused-argument
     """TTY-like line-by-line keyboard-to-printer echo loop."""
     try:
@@ -94,6 +99,7 @@ def echo(args):  # pylint: disable=unused-argument
 
 from PIL import Image, ImageDraw
 
+
 def _stall_test(width, height):
     """Generate a pattern to detect print glitches due to vertical stalling."""
     img = Image.new('1', (width, height))
@@ -101,6 +107,7 @@ def _stall_test(width, height):
         img.putpixel(pos, not sum(pos) % 10)
     return img
 
+
 def _test_basic():
     """The original test code from python-escpos's Usage wiki page"""
     epson.set(align='left')
@@ -120,24 +127,26 @@ def _test_basic():
     # Cut paper
     epson.cut()
 
+
 def _test_barcodes():
     """Print test barcodes for all ESCPOS-specified formats."""
     for name, data in (
-        # pylint: disable=bad-continuation
-        ('UPC-A', '123456789012\x00'),
-        ('UPC-E', '02345036\x00'),
-        ('EAN13', '1234567890128\x00'),
-        ('EAN8', '12345670\x00'),
-        ('CODE39', 'BARCODE12345678\x00'),
-        ('ITF', '123456\x00'),
-        ('CODABAR', 'A40156B'),
-        # TODO: CODE93 and CODE128
+            # pylint: disable=bad-continuation
+            ('UPC-A', '123456789012\x00'),
+            ('UPC-E', '02345036\x00'),
+            ('EAN13', '1234567890128\x00'),
+            ('EAN8', '12345670\x00'),
+            ('CODE39', 'BARCODE12345678\x00'),
+            ('ITF', '123456\x00'),
+            ('CODABAR', 'A40156B'),
+            # TODO: CODE93 and CODE128
     ):
         # TODO: Fix the library to restore old alignment somehow
         epson.set(align='center')
         epson.text('\n%s\n' % name)
         epson.barcode(data, name, 64, 2, '', '')
 
+
 def _test_patterns(width=384, height=255):
     """Print a set of test patterns for raster image output."""
     # Test our guess of the paper width
@@ -152,6 +161,7 @@ def _test_patterns(width=384, height=255):
     epson.image(_stall_test(width, height))
     epson.image(_stall_test(width / 2, height))
 
+
 def test(args):
     """The 'test' subcommand"""
     if args.barcodes:
@@ -161,6 +171,7 @@ def test(args):
     else:
         _test_basic()
 
+
 # }}}
 
 def main():
@@ -168,25 +179,26 @@ def main():
     # pylint: disable=bad-continuation
 
     import argparse
+
     parser = argparse.ArgumentParser(
         description="Command-line interface to python-escpos")
     subparsers = parser.add_subparsers(title='subcommands')
 
     echo_parser = subparsers.add_parser('echo', help='Echo the keyboard to '
-        'the printer line-by-line (Exit with Ctrl+C)')
+                                                     'the printer line-by-line (Exit with Ctrl+C)')
     echo_parser.set_defaults(func=echo)
 
     print_parser = subparsers.add_parser('print', help='Print the given files')
     print_parser.add_argument('--images', action='store_true',
-        help="Provided files are images rather than text files.")
+                              help="Provided files are images rather than text files.")
     print_parser.add_argument('paths', metavar='path', nargs='+')
     print_parser.set_defaults(func=print_files)
 
     test_parser = subparsers.add_parser('test', help='Print test patterns')
     test_modes = test_parser.add_mutually_exclusive_group()
     test_modes.add_argument('--barcodes', action='store_true',
-        help="Test supported barcode types (Warning: Some printers must be "
-        "reset after attempting an unsupported barcode type.)")
+                            help="Test supported barcode types (Warning: Some printers must be "
+                                 "reset after attempting an unsupported barcode type.)")
     test_modes.add_argument('--patterns', action='store_true',
                             help="Print test patterns")
     test_parser.set_defaults(func=test)
@@ -194,6 +206,7 @@ def main():
     args = parser.parse_args()
     args.func(args)
 
+
 if __name__ == '__main__':
     main()