This example shows how the 51Degrees device detection engine deals with evidence that does not match any known device. In this scenario, 'HasValue' can be used to check if the property has been populated by the engine. If it hasn't then 'NoValueMessage' can be used to get the reason why.

To run this example, you will need to create a resource key. The resource key is used as shorthand to store the particular set of properties you are interested in as well as any associated license keys that entitle you to increased request limits and/or paid-for properties.

You can create a resource key using the 51Degrees Configurator.

Expected output:

1 Is user agent '--' a mobile?

2 The results contained a null profile for the component which the required property belongs to.

3

4 Is user agent 'Mozilla/5.0 (iPhone; CPU iPhone OS 11_2 like Mac OS X) AppleWebKit/604.4.7 (KHTML, like Gecko) Mobile/15C114' a mobile?

5 true

1 # *********************************************************************

2 # This Original Work is copyright of 51 Degrees Mobile Experts Limited.

4 # Caversham, Reading, Berkshire, United Kingdom RG4 7BY.

5 #

6 # This Original Work is licensed under the European Union Public Licence (EUPL)

7 # v.1.2 and is subject to its terms as set out below.

8 #

9 # If a copy of the EUPL was not distributed with this file, You can obtain

10 # one at https://opensource.org/licenses/EUPL-1.2.

11 #

12 # The 'Compatible Licences' set out in the Appendix to the EUPL (as may be

13 # amended by the European Commission) shall be deemed incompatible for

14 # the purposes of the Work and the provisions of the compatibility

15 # clause in Article 5 of the EUPL shall not apply.

16 #

17 # If using the Work as, or as part of, a network application, by

18 # including the attribution notice(s) required under Article 5 of the EUPL

19 # in the end user terms of the application under an appropriate heading,

20 # such notice(s) shall fulfill the requirements of that article.

21 # ********************************************************************

22

23

38

39 from fiftyone_devicedetection_cloud.devicedetection_cloud_pipelinebuilder import DeviceDetectionCloudPipelineBuilder

40

41 # First create the device detection pipeline with the desired settings.

42

43 # You need to create a resource key at https://configure.51degrees.com

44 # and paste it into the code, replacing !!YOUR_RESOURCE_KEY!! below.

45 # Alternatively, add a resource_key environment variable

46 import os

47 if "resource_key" in os.environ:

48 resource_key = os.environ["resource_key"]

49 else:

50 resource_key = "!!YOUR_RESOURCE_KEY!!"

51

52 if resource_key == "!!YOUR_RESOURCE_KEY!!":

53 print("""

54 You need to create a resource key at

55 https://configure.51degrees.com and paste it into the code,

56 'replacing !!YOUR_RESOURCE_KEY!!

57 To include the properties used in this example, go to https://configure.51degrees.com/bxXqZhLT

58 """)

59 else:

60

61 pipeline = DeviceDetectionCloudPipelineBuilder({

62 "resource_key": resource_key

63 }).build()

64

65 # We create a FlowData object from the pipeline

66 # this is used to add evidence to and then process

67

68 flowdata1 = pipeline.create_flowdata()

69

70 # Here we add a User-Agent of an iphone as evidence

71

72 iphone_ua = "Mozilla/5.0 (iPhone; CPU iPhone OS 11_2 like Mac OS X) AppleWebKit/604.4.7 (KHTML, like Gecko) Mobile/15C114"

73

74 flowdata1.evidence.add("header.user-agent", iphone_ua)

75

76 # Now we process the FlowData

77

78 flowdata1.process()

79

80 # To check whether the User-Agent is a mobile device we look at the ismobile property

81 # inside the Device Detection Engine

82

83 # first we check if this has a meaningful result

84

85 print("Is User-Agent " + iphone_ua + " a mobile device?: ")

86 if flowdata1.device.ismobile.has_value():

87 print(flowdata1.device.ismobile.value())

88 else:

89 # Output why the value isn't meaningful

90 print(flowdata1.device.ismobile.no_value_message())

91

92 # Now we do the same with a new User-Agent, this time a corrupted one

93

94 badUA = "--"

95

96 flowdata2 = pipeline.create_flowdata()

97

98 flowdata2.evidence.add("header.user-agent", badUA)

99

100 flowdata2.process()

101

102 print("Is User-Agent " + badUA + " a mobile device?: ")

103 if flowdata2.device.ismobile.has_value():

104 print(flowdata2.device.ismobile.value())

105 else:

106 # Output why the value isn't meaningful

107 print(flowdata2.device.ismobile.no_value_message())

51Degrees Device Detection Python 4.4

cloud/failuretomatch.py