DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

print(readdata.read()) Line one of a text file Line two of a text file, just like line one, but the second one. Third line of a ...

reading and appending to the end of the file. Here is what the code would look like: Click here to view code image with open("te ...

Each line in a CSV file represents a row, and commas are used to separate the individual data fields to make it easier to parse ...

In this example, you now have a list of lists that includes each row of data. If you wanted to manipulate this data, you could b ...

router1 is in Nashville and has IP 192.168.10.1. router2 is in Tampa and has IP 192.168.20.1. router3 is in San Jose and has IP ...

router3 is in San Jose and has IP 192.168.30.1. router4 is in London and has IP 192.168.40.1. JavaScript Object Notation (JSON) ...

capability allows you to structure very sophisticated data models. Notice how similar to a Python dictionary the data looks. You ...

'Router Uplink', 'enabled': True, 'ipv4': {'address': [{'ip': '192.168.0.2', 'netmask': '255.255.255.0'}]}}} You can now modify ...

"address": [ { "ip": "192.168.0.2", "netmask": "255.255.255.0" } ] } } } >>> Extensible Markup Language (XML) Extensibl ...

that a tag acts as a key with a value. You can also assign attributes to a tag by using the following syntax: attribute name="so ...

Click here to view code image import xmltodict with open("xml_sample.xml") as data: xml_example = data.read() xml_dict = xmltodi ...

<address> <ip>192.168.55.3</ip> <netmask>255.255.255.0</netmask> </address> </ipv4> &l ...

Notice that a YAML object has minimal syntax, all data that is related has the same indentation level, and key/value pairs are u ...

yaml_dict = yaml.load(yaml_sample, Loader=yaml.FullLoader) The variable yaml_dict is now a dictionary object containing your YAM ...

To write these changes back to your file, use the following code. Click here to view code image with open("yaml_sample.yaml", "w ...

print(f'Sorry, {filename} doesn't exist! Please try again.') else: print(file_data) x = 0 break finally: x += 1 if x == 3: print ...

Here is what the program output would look like with a valid test.txt file in the script directory: Click here to view code imag ...

the development process by focusing on only making changes or adding code that satisfies the goal of the test. In normal testing ...

Step 2. Test fails: Of course, the test fails because you haven’t written the part that works yet. The idea here is to think abo ...

code as you write it. While this is software testing, it’s not structured and often is not repeatable. Did you test all options? ...