danielgoncalves

def is_ip(value):
    """IP simple validation in response to blog post http://goo.gl/L9cKh"""
    try:
        bytes = [int(e) for e in value.split('.') if 0 <= int(e) <= 255)]
    except ValueError:
        return False
    return len(bytes) == 4

danielgoncalves

# -*- coding: utf-8 -*-
#
# logr.py is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as 
# published by the Free Software Foundation, either version 3 of the 
# License, or (at your option) any later version.
#
# logr.py is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

danielgoncalves

# -*- coding: utf-8 -*-
#
# buscarcep.py
# 
# Exemplo de uso do webservice http://buscarcep.com.br/
# Para Python 2.7
# 
# Daniel Gonçalves <daniel@base4.com.br>
#

danielgoncalves

# Depende de PyESCPOS (https://github.com/base4sistemas/pyescpos)
# Testado em uma Daruma DR700 L-e v01.21.00
# Resultado: https://plus.google.com/105886422423352640759/posts/YBedvhKL8SQ?pid=6131402497594282098&oid=105886422423352640759

from escpos.serial import SerialSettings
from escpos.impl.daruma import DarumaGeneric

conn = SerialSettings.as_from('COM1:9600,8,1,N').get_connection()
printer = DarumaGeneric(conn)
printer.init()

danielgoncalves

<?xml version="1.0"?>
<CFe>
  <infCFe versaoDadosEnt="0.06">
    <ide>
      <CNPJ>08427847000169</CNPJ>
      <signAC>SGR-SAT SISTEMA DE GESTAO E RETAGUARDA DO SAT</signAC>
      <numeroCaixa>002</numeroCaixa>
    </ide>
    <emit>
      <CNPJ>61099008000141</CNPJ>

danielgoncalves

# -*- coding: utf-8 -*-
# Requires https://github.com/base4sistemas/pyescpos
# Have a look at https://github.com/base4sistemas/pyescpos/wiki
from __future__ import unicode_literals
from __future__ import print_function

import logging.config

from escpos import showcase
from escpos.conn.usb import USBConnection

danielgoncalves

import ctypes, sys
from ctypes import windll, wintypes
from uuid import UUID

class GUID(ctypes.Structure):   # [1]
    _fields_ = [
        ("Data1", wintypes.DWORD),
        ("Data2", wintypes.WORD),
        ("Data3", wintypes.WORD),
        ("Data4", wintypes.BYTE * 8)

danielgoncalves

#   Copyright 2017 Dan Krause
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,

danielgoncalves

from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import A4
from reportlab.lib.units import mm
#I"ll be generating code39 barcodes, others are available
from reportlab.graphics.barcode import code39

# generate a canvas (A4 in this case, size doesn"t really matter)
c=canvas.Canvas("barcode_example.pdf",pagesize=A4)
# create a barcode object
# (is not displayed yet)

danielgoncalves

// (!) This implementation seems to work;
// Trying this in DartPad results in "s = false" and "f = true" as expected.
// This was taken from https://gist.github.com/theburningmonk/6401183
class FooBar {
  static final FooBar _instance = new FooBar._internal();

  factory FooBar() => _instance;
  
  FooBar._internal() {
    // initialization logic here