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self-open mechanism through the 'device' property

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This commit is contained in:
belono 2023-08-17 21:19:42 +02:00
parent bf95fa1f56
commit 8763eba86c
1 changed files with 7 additions and 2 deletions
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9
src/escpos/escpos.py
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@ -114,7 +114,7 @@ class Escpos(object):
class. class.
""" """
_device = False _device = False # False -> Uninitialized
def __init__(self, profile=None, magic_encode_args=None, **kwargs) -> None: def __init__(self, profile=None, magic_encode_args=None, **kwargs) -> None:
"""Initialize ESCPOS Printer. """Initialize ESCPOS Printer.
@ -130,9 +130,14 @@ class Escpos(object):
@property @property
def device(self): def device(self):
"""Implements a self-open mechanism.""" """Implements a self-open mechanism.
An attempt to get the property before open the connection
will cause the connection to open.
"""
if self._device is False: if self._device is False:
# Open device if not previously opened # Open device if not previously opened
self._device = None # None -> Initialized
self.open() self.open()
return self._device return self._device