Read File Line by Line | Dataford Interview Questions

Read a text file line by line and output ... (rest hidden behind points wall; visible fragment references a Disallow list when the user-agent is not onebot/*).

Asked in the online screening test stage, Q2 of 2. Implement the visible task as follows: each blank line ends a user-agent group. Return unique, lexicographically sorted Disallow paths from groups containing at least one user-agent that does not start with onebot/.

Input and Output

lines is a list of text lines. Return a list of paths. Ignore comments, blank Disallow values, and unrelated directives.

Constraints

1 <= len(lines) <= 1000
Directive names are matched case-insensitively
A blank line terminates the current user-agent group
A onebot/* user-agent is any value beginning with onebot/ after lowercasing

Function Signature

def disallow_paths(lines):

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