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351 ean example fix (#537)

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* bug/doc: Fix invalid EAN-13 barcode in examples

In the various examples and python-escpos CLI there are a number of uses
of `13243546557687` as an EAN-13 example.  This EAN barcode is invalid
as the checksum should be `0` and not `7`.

```
$ python test_print.py
Traceback (most recent call last):
  File "test_print.py", line 5, in <module>
    p.barcode('13243546557687', 'EAN13', 64, 2, '', '')
  File "/home/pi/fatt-display/lib/python3.7/site-packages/escpos/escpos.py", line 433, in barcode
    bc=bc,
escpos.exceptions.BarcodeCodeError: No Barcode code was supplied (Barcode '13243546557687' not in a valid format for type 'EAN13')
```

This patch set removes `13243546557687` and replaces it with the valid
number `40063813339310`.

In researching the list of [assigned prefixes issued by
G1][g1-prefixes] there seemed to be no "officially" defined test  prefix, so
this change was made to be minimally invasive using the number from the
existing test cases.

Resolves #350

Affects #176

[g1-prefixes]: https://www.gs1.org/standards/id-keys/company-prefix
[test-code]: https://www.barcodelookup.com/4006381333931

---------

Co-authored-by: Brian 'Redbeard' Harrington <redbeard@dead-city.org>
This commit is contained in:
Patrick Kanzler
2023-07-28 18:23:18 +02:00
committed by GitHub
parent df9e8ff394
commit 09a598883c
4 changed files with 6 additions and 5 deletions
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4
src/escpos/cli.py
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@@ -52,7 +52,7 @@ DEMO_FUNCTIONS = {
"barcodes_a": [
{"bc": "UPC-A", "code": "13243546576"},
{"bc": "UPC-E", "code": "132435"},
{"bc": "EAN13", "code": "1324354657687"},
{"bc": "EAN13", "code": "4006381333931"},
{"bc": "EAN8", "code": "1324354"},
{"bc": "CODE39", "code": "TEST"},
{"bc": "ITF", "code": "55867492279103"},
@@ -61,7 +61,7 @@ DEMO_FUNCTIONS = {
"barcodes_b": [
{"bc": "UPC-A", "code": "13243546576", "function_type": "B"},
{"bc": "UPC-E", "code": "132435", "function_type": "B"},
{"bc": "EAN13", "code": "1324354657687", "function_type": "B"},
{"bc": "EAN13", "code": "4006381333931", "function_type": "B"},
{"bc": "EAN8", "code": "1324354", "function_type": "B"},
{"bc": "CODE39", "code": "TEST", "function_type": "B"},
{"bc": "ITF", "code": "55867492279103", "function_type": "B"},