Aggregate Error Codes by Timestamp

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Your question is Aggregate Error Codes by Timestamp. Start with the requirements on the right.

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Problem

Given a list of log lines logs and a list of target error codes target_codes, write a function that parses each line and returns a mapping from timestamp to error-code counts. Each valid log line has the format TIMESTAMP|LEVEL|CODE|MESSAGE. Only count lines whose CODE is in target_codes. Ignore malformed lines.

Constraints

1 <= len(logs) <= 10^5
1 <= len(target_codes) <= 10^3
Each log line is a string of length 1 to 10^4
Valid lines contain exactly 4 fields separated by |
Return timestamps in the order they first appear in valid matching lines

Function Signature

def aggregate_error_codes(logs, target_codes):

Your solutionPython 3

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