![JSON Data types
• Array
• Ordered list of values
• Uses square brackets [ ]
• Can store multiple types:
• JSON array can store valid JSON data types
such as string, number, Boolean, object, null or
another array
• Values must be separated by comma.](https://image.slidesharecdn.com/json-udemy-220417170234/85/JSON-Udemy-pdf-9-320.jpg)
![JSON Data types
• Array
• Ordered list of values
• Uses square brackets [ ]](https://image.slidesharecdn.com/json-udemy-220417170234/85/JSON-Udemy-pdf-14-320.jpg)
![Python Script 2
• Run Python On-Box :
from cli import *
import json
cmd1 = 'show ip int brief | json-pretty'
json_data = cli(cmd1)
json_final = json.loads(json_data)
print(json_final['TABLE_intf']['ROW_intf'][0]['prefix'])](https://image.slidesharecdn.com/json-udemy-220417170234/85/JSON-Udemy-pdf-17-320.jpg)
![Python Script 5
• Find some data:
#!/usr/bin/env python
from netmiko import ConnectHandler
import json
nx_os = {
'device_type': 'cisco_ios',
'ip': 'sbx-nxos-mgmt.cisco.com',
'username': 'admin',
'password': 'Admin_1234!',
'port': 8181
}
net_connect = ConnectHandler(**nx_os)
output = net_connect.send_command('show ip int brief | json-pretty')
json_data = json.loads(output)
print(json_data['TABLE_intf']['ROW_intf'][0]['intf-name'])
print(json_data['TABLE_intf']['ROW_intf'][0]['prefix'])](https://image.slidesharecdn.com/json-udemy-220417170234/85/JSON-Udemy-pdf-21-320.jpg)
![Python Script 6 Part 2
• Use a loop to find IP addresses :
net_connect = ConnectHandler(**nx_os)
output = net_connect.send_command('show ip int brief | json-
pretty')
json_data = json.loads(output)
int_number = len(json_data['TABLE_intf']['ROW_intf'])
for x in range(int_number):
print(json_data['TABLE_intf']['ROW_intf'][x]['intf-name'])
print(json_data['TABLE_intf']['ROW_intf'][x]['prefix'])](https://image.slidesharecdn.com/json-udemy-220417170234/85/JSON-Udemy-pdf-23-320.jpg)
JSON-Udemy.pdf
- 2. Watch a video? • Want to watch a video? • YouTube: https://youtu.be/NvqD0wdQlYA
- 3. Human? • Are you a human or a robot? • Machines struggle with unformatted data
- 5. •Manufacturer: Tesla •Model: X •Color: White •Fuel: Electric •MPG city: 99 •MPG highway: 93
- 6. JSON Data • JSON data is written as name/value pairs: • A name / value pair consists of a field name (in double quotes), followed by a colon, followed by a value: • "firstname" : "David" • Or, "lastname" : "Bombal"
- 7. JSON Data types: Object • Object • Unordered collection of key:value pairs • Data surrounded by curly braces { } • Key and value are separated by a colon • Each key/value pair is separated by a comma (not the last!). Trailing commas must not be used. • Use double quotes, not single quotes. • Boolean values must be lowercase (different to Python) • Example: • {"firstName": "David", "lastName": "Bombal"}
- 8. JSON Data types: Object • Object • Another example: { "firstName" : "David", "lastName" : "Bombal", "website" : "davidbombal.com" }
- 9. JSON Data types • Array • Ordered list of values • Uses square brackets [ ] • Can store multiple types: • JSON array can store valid JSON data types such as string, number, Boolean, object, null or another array • Values must be separated by comma.
- 10. Practical • Use the DevNet Nexus always on sandbox • DNS name: sbx-nxos-mgmt.cisco.com • Protocol: SSH • Port: 8181 • Username: admin • Password: Admin_1234! • Example: • Mac: ssh -p 8181 [email protected] • Windows: Use Putty to connect
- 11. JSON Data types • Object • Unordered collection of key:value pairs • Data surrounded by curly braces { } • show version | json-pretty { "chassis_id": "Nexus9000 9000v Chassis", "cpu_name": "Intel(R) Xeon(R) CPU E5-4669 v4 @ 2.20GHz", "manufacturer": "Cisco Systems, Inc." }
- 12. JSON Data types • Object • Unordered collection of key:value pairs • Data surrounded by curly braces { }
- 13. JSON Data types • Object • Unordered collection of key:value pairs
- 14. JSON Data types • Array • Ordered list of values • Uses square brackets [ ]
- 15. Python Script 1 • Run Python On-Box : from cli import * cmd1 = 'show ip int brief | json-pretty' output1 = cli(cmd1) print(output1)
- 16. Python Script 2 • Run Python On-Box : • Extract •TABLE_intf dictionary •ROW_intf dictionary • Select element in the index • Select the key
- 17. Python Script 2 • Run Python On-Box : from cli import * import json cmd1 = 'show ip int brief | json-pretty' json_data = cli(cmd1) json_final = json.loads(json_data) print(json_final['TABLE_intf']['ROW_intf'][0]['prefix'])
- 18. Python Script 3 Step 1 • Run Python remotely using Ubuntu: • Step 1: Install Python and Netmiko sudo apt install python3-pip sudo pip3 install -U netmiko
- 19. Python Script 3 Step 2 • Run Python remotely using Ubuntu VM: Print out interfaces to test our script: #!/usr/bin/env python from netmiko import ConnectHandler nx_os = { 'device_type': 'cisco_ios', 'ip': 'sbx-nxos-mgmt.cisco.com', 'username': 'admin', 'password': 'Admin_1234!', 'port': 8181 } net_connect = ConnectHandler(**nx_os) output = net_connect.send_command('show ip int brief') print(output)
- 20. Python Script 4 • Print JSON output: #!/usr/bin/env python from netmiko import ConnectHandler nx_os = { 'device_type': 'cisco_ios', 'ip': 'sbx-nxos-mgmt.cisco.com', 'username': 'admin', 'password': 'Admin_1234!', 'port': 8181 } net_connect = ConnectHandler(**nx_os) output = net_connect.send_command('show ip int brief | json-pretty') print(output)
- 21. Python Script 5 • Find some data: #!/usr/bin/env python from netmiko import ConnectHandler import json nx_os = { 'device_type': 'cisco_ios', 'ip': 'sbx-nxos-mgmt.cisco.com', 'username': 'admin', 'password': 'Admin_1234!', 'port': 8181 } net_connect = ConnectHandler(**nx_os) output = net_connect.send_command('show ip int brief | json-pretty') json_data = json.loads(output) print(json_data['TABLE_intf']['ROW_intf'][0]['intf-name']) print(json_data['TABLE_intf']['ROW_intf'][0]['prefix'])
- 22. Python Script 6 Part 1 • Use a loop to find IP addresses : #!/usr/bin/env python from netmiko import ConnectHandler import json nx_os = { 'device_type': 'cisco_ios', 'ip': 'sbx-nxos-mgmt.cisco.com', 'username': 'admin', 'password': 'Admin_1234!', 'port': 8181 }
- 23. Python Script 6 Part 2 • Use a loop to find IP addresses : net_connect = ConnectHandler(**nx_os) output = net_connect.send_command('show ip int brief | json- pretty') json_data = json.loads(output) int_number = len(json_data['TABLE_intf']['ROW_intf']) for x in range(int_number): print(json_data['TABLE_intf']['ROW_intf'][x]['intf-name']) print(json_data['TABLE_intf']['ROW_intf'][x]['prefix'])