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Python API Reference - BarcodeReader Constructor and Destructor

Method Description
BarcodeReader The default constructor of BarcodeReader object.
__del__ The default destructor of BarcodeReader object.
get_instance Creates an instance of Dynamsoft Barcode Reader.
recycle_instance Destroys an instance of Dynamsoft Barcode Reader.

BarcodeReader

BarcodeReader()

The default constructor of a BarcodeReader object.

BarcodeReader BarcodeReader()

__del__()

The default destructor of a BarcodeReader object.

reader = BarcodeReader()
del reader

get_instance

Creates an instance of Dynamsoft Barcode Reader.

BarcodeReader.get_instance()

Return Value
Returns an instance of Dynamsoft Barcode Reader. If failed, returns None.

Code Snippet

# Make sure initLicense have been called somewhere before getInstance
reader = BarcodeReader.get_instance()
# If no instance is available right away, the application will wait until one becomes available
if reader != None:
   # Add your code here to call decoding method, process barcode results and so on
   # ...
   reader.recycle_instance()

recycle_instance

Destroys an instance of Dynamsoft Barcode Reader.

BarcodeReader.recycle_instance()

Code Snippet

# Make sure initLicense have been called somewhere before getInstance
reader = BarcodeReader.get_instance()
# If no instance is available right away, the application will wait until one becomes available
if reader != None:
   # Add your code here to call decoding method, process barcode results and so on
   # ...
   reader.recycle_instance()

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