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import string
# Charsets for code 39
REF = (
tuple(string.digits)
+ tuple(string.ascii_uppercase)
+ ("-", ".", " ", "$", "/", "+", "%")
)
B = "1"
E = "0"
CODES = (
"101000111011101",
"111010001010111",
"101110001010111",
"111011100010101",
"101000111010111",
"111010001110101",
"101110001110101",
"101000101110111",
"111010001011101",
"101110001011101",
"111010100010111",
"101110100010111",
"111011101000101",
"101011100010111",
"111010111000101",
"101110111000101",
"101010001110111",
"111010100011101",
"101110100011101",
"101011100011101",
"111010101000111",
"101110101000111",
"111011101010001",
"101011101000111",
"111010111010001",
"101110111010001",
"101010111000111",
"111010101110001",
"101110101110001",
"101011101110001",
"111000101010111",
"100011101010111",
"111000111010101",
"100010111010111",
"111000101110101",
"100011101110101",
"100010101110111",
"111000101011101",
"100011101011101",
"100010001000101",
"100010001010001",
"100010100010001",
"101000100010001",
)
EDGE = "100010111011101"
MIDDLE = "0"
# MAP for assigning every symbol (REF) to (reference number, barcode)
MAP = dict(zip(REF, enumerate(CODES)))
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