====== Python ======

https://es.wikipedia.org/wiki/Python \\
https://www.python.org/ \\ 
https://pypi.org/ \\
https://www.geeksforgeeks.org/python-tkinter-tutorial/\\
http://python-para-impacientes.blogspot.com \\ 
https://docs.python-guide.org/ \\
https://learnxinyminutes.com/docs/es-es/python-es/ \\

[[https://tkinter-docs.readthedocs.io/en/latest/widgets/canvas.html#|dibujar con canvas]] \\
[[https://ricardogeek.com/python-vs-json-guia-para-serializar-y-deserializar/|JSON serializar y deserializar]] \\
[[http://www.jmgaguilera.com/inmersionenpython3html/node11.html|Serialización con pickle]] \\
 \\ 
https://docs.python.org/3/  documentacion python version 3 \\ 
https://docs.python.org/3/library/tkinter.html \\ 
https://devfreebooks.github.io/python/ \\
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===== Web =====
https://cherrypy.dev/ python en servidor web \\

http://www.brython.info ejecutar codigo python, en paginas web (lado cliente)  \\
https://pyscript.net/ python en navegador del cliente \\

https://www.tutorialspoint.com/python3/python_cgi_programming.htm \\
http://cgi.tutorial.codepoint.net/session \\
https://bottlepy.org/docs/dev/index.html crear paginas web con python (lado servidor) \\ 

https://www.escuelapython.com/usa-python-en-el-navegador-con-transcrypt/ \\
https://pythontips.com/2019/05/22/running-python-in-the-browser/  \\
[[http://www.web2py.com/books/default/chapter/41/00/prologo|www.web2py.com/books]] \\
 \\ 
[[https://diego.com.es/headers-del-protocolo-http|headers del protocolo http]]
 https://requests.readthedocs.io/es/latest/# \\
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[[https://proyectobeta.xyz/python-telegram-mensajes/|Enviar mensajes a mi **Telegram** usando un bot y Python]] \\
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===== IPC (Inter-Process Communication)  =====
https://docs.python.org/3/library/ipc.html \\
Unix socket = IPC socket \\
datagram socket = sin coneccion ~ UDP/IP\\
stream socket ~ TCP/IP\\
memory-mapped file = mmap \\
===== Fecha, tiempos, calendario =====
https://schedule.readthedocs.io/en/stable/ \\
\\ 

===== GUI =====
[[https://wiki.python.org/moin/TkInter|tkinter]] \\
[[https://wxpython.org/|wxPython]] \\
[[https://kivy.org|kivy]] //tambien para Android// \\  
pyQt \\ 
pyGUI \\
pyforms https://pyforms.readthedocs.io \\
PySimpleGUI libreria basada en tkinter \\
===== Data base, comunicacion =====
http://pythonhosted.org/pymodbus/ Py**Modbus** documentacion \\ 
 \\ 
 Tabla caracteres Unicode https://unicode-table.com/es \\
 \\

===== crear un ejecutable =====
https://pyoxidizer.readthedocs.io \\
https://www.pyinstaller.org \\
http://www.py2exe.org/ \\
https://pyoxidizer.readthedocs.io/en/latest/comparisons.html \\

 \\
===== PyModbus (RTU)=====

  import pymodbus
  # https://github.com/riptideio/pymodbus/
  # https://pypi.org/project/pymodbus/
  from pymodbus.client.sync import ModbusSerialClient 
  
  config = {}
  config["rtu_serial"] = '/dev/ttyS0'
  config["rtu_timeout"] = 0.5
  config["rtu_speed"] = 19200
  config["rtu_par"] = 'N'  # N=none, O=odd=inpar, E=even=par 
  config["rtu_slave"] = 1
  
  import glob
  scan = glob.glob('/dev/ttyS*') + glob.glob('/dev/ttyUSB*') + glob.glob('/dev/ttyACM*')
  if config["rtu_serial"] in scan:
	print('serial ',config["rtu_serial"] +"'  si existe")
  else:
	print("error: '"+ config["rtu_serial"] +"'  no existe\n")
	msg = "encontrados: "
	for name in scan:
		msg = msg +"'"+ name +"' "
	print(msg)
	sys.exit(1)
  print('config:',config["rtu_speed"],'baud',' 8'+config["rtu_par"]+'1')
  
  rtu = ModbusSerialClient( port= config["rtu_serial"],
		method= "rtu", baudrate= config["rtu_speed"],
		bytesize= 8, parity= config["rtu_par"], stopbits= 1, 
		timeout= config["rtu_timeout"] )
  
  if rtu.connect():
	print("hay conexion con rtu slave",config["rtu_slave"])
  else:
	print("sin conexion con rtu slave",config["rtu_slave"])
  
  #________________________________
  def LeerBits(inicio,cantidad):
	"""retorna una lista de valores"""
	bit = []
	if rtu.connect():
		resp= rtu.read_coils(inicio, cantidad, unit=config["rtu_slave"])
		if not resp.isError():
			bit = resp.bits
		return bit
  #________________________________
  def EscribirBits(inicio,bits):
	"""bits es una lista de valores"""
	resp= rtu.write_coils(inicio, bits, unit=config["rtu_slave"])
	if not resp.isError():
		return True
	else:
		return False
  #________________________________
  def LeerEnteros(inicio,cantidad):
	"""retorna una lista de valores"""
	reg = []
	if rtu.connect():
		resp= rtu.read_holding_registers(inicio, cantidad, unit=config["rtu_slave"])
		if not resp.isError():
			reg = resp.registers
		return reg
  #________________________________
  def EscribirEnteros(inicio,regs):
	"""regs es una lista de valores"""
	resp= rtu.write_registers(inicio, regs, unit=config["rtu_slave"])
	if not resp.isError():
		return True
	else:
		return False
  #________________________________
  """ ejemplos con registros"""
  print('\nEscribir en reg %MW0 y siguientes: 0,1111,2222,3333,4444,5555,6666,7777,8888,9999')
  valores= [0,1111,2222,3333,4444,5555,6666,7777,8888,9999]
  EscribirEnteros(inicio=0, regs= valores)
  
  print('\nLeer 7 enteros, desde %MW0 hasta %MW6')
  print( LeerEnteros(inicio=0,cantidad=7) )
  
  print('\nLeer 6 enteros, desde %MW3 hasta %MW8')
  print( LeerEnteros(inicio=3,cantidad=6) )
  
  #________________________________
  """ ejemplos con bits"""
  print('\nEscribir en bits %M0 y siguientes: 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1')
  valores= [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
  EscribirBits(inicio=0, bits= valores)
  
  print('\nLeer 16 bits, desde %M0 hasta %MW15')
  print( LeerBits(inicio=0,cantidad=16) )
  
  print('\nEscribir 0 en bit %M3')
  EscribirBits(inicio=3, bits= [0])
  
  print('\nLeer 16 bits, desde %M0 hasta %MW15')
  print( LeerBits(inicio=0,cantidad=16) )
    
  rtu.close()  # liberar puerto serial
  

https://pypi.org/project/pyModSlave/ \\
https://github.com/zxlin/Modbus-PLC-Simulator \\
https://sourceforge.net/projects/pymodslave/ \\
https://sourceforge.net/projects/qmodmaster/ \\

    Python Shelve Module
    https://www.pythoncheatsheet.org/modules/shelve-module
    https://rico-schmidt.name/pymotw-3/shelve/index.html
    
    ________________________________
    TinyDB    https://tinydb.readthedocs.io/en/latest/#
    
    _________________________________
    pickleDB    https://pypi.org/project/pickleDB/
    
    _________________________________
    ZODB