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I think thats the normal behavour of Django, as you can see it is saying that your path didn't match any of the configured ones, like admin, so why don't you try http://127.0.0.1:8000/admin/to access Django Admin login page.

If you want to see something different from a 404 with the base url you need to configure your urls and maybe add a redirect view, in that way when the base url is use it will redirect to your admin or other preferred page.

This is a sample of one line of the OP's XML file
109555912.69

The OP wants to use the IMPORTXML function to report the ID and Name as well as the Job Cost from the XML data. Presently, the OP's formula is:
=importxml("link","//job-base-cost")

There are two options:
1 - One long column
=importxml("link","//@id | //@name | //job-base-cost")

Note //@id and //@name in the xpath query: // indicate nodes in the document (at any level, not just the root level) and @ indicate attributes. The pipe | operator indicates AND. So the plain english query is to display the id, name and job-base-cost.

2 - Three columns (table format)
={IMPORTXML("link","//@name"),IMPORTXML("link","//job-base-cost"),IMPORTXML("link","//@id")}

This creates a series that will display the fields in each of three columns.

Note: there is an arrayformula that uses a single importXML function described in How do I return multiple columns of data using ImportXML in Google Spreadsheets?. Readers may want to look at whether that option can be implemented.

My thanks to @Tanaike for his comment which spurred me to look at how xpath works.

Adding and removing an owner follows the same rules as confirming any transactions from the MultiSigWallet. Assume the wallet was deployed with 3 EOA addresses as owners and requiring 2 confirmations for execution. For any regular transaction, say donate funds from the wallet to a FundRaisingContract, one of the owners would need to first call submitTransaction() passing in the address of FundRaisingContract, the amount of ether, and the hash for the donate function. After submission, you still need 1 of the other owners to confirmTransaction (the submitter is automatically confirmed). Once completed, now executeTransaction can be successfully run which will execute the call to donate() from the MultiSigWallet address.

That last part is what you're looking for to answer your question. To add an owner, repeat the example but use the MultiSigWallet address and the hash of the addOwner method. When one of the other owners confirms the transaction, addOwner will be called and it will pass the onlyWallet modifier check.

Honestly I think this snippet is overly complex to grasp the concept. yield None is no different from yield 1 or yield any_other_value

When python encounters yield in the function code it would convert this function into a special-purpose object that behaves differently from regular functions. On every yield it indeeds returns the value and saves the current state. See my code sample with some debugging info (tested on python 2.7, may not work on python 3.x), hope it would be helpful

Parse the string first with json, and later convert numbers to floats: